Template:Convert

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Usage

This template shows measurement quantities as primary and converted secondary units (or ranges), with optional rounding, wikilinks, abbreviation, or US spellings, and various separators including:  parentheses "( )", "or", hyphens, comma, "to" or dashes. Styles include: distance "32 metres (105 ft)" and "32 metres or 105 feet"; temperature "18 °C (64 °F)"; mass "55.0 kg (121 lb)" or "65 to 80 kg (140 to 180 lb)"; etc. For units see: Convert/list of units.

Options include:  lk=in, abbr=on, abbr=off, sp=us, adj=on, adj=mid, disp=x, disp=table and sortable=on (explained below). By default, output is rounded to match the precision of input; alternatives include: sigfig=3 or using the end parameter, such as "|1" to show tenths or "|-2" to show full 100's, etc.

Single value:

{{convert|value|in_unit|out_unit|round_to|...}}

Range of 2 values, or set of 3 or 4 (see below for list of range options):

{{convert|val1|range|val2 |in_unit|out_unit|round_to|...}}
{{convert/3 |val1|range|val2|words|val3|in_unit|out_unit|round_to|...}}
{{convert/4 |val1|words|val2|words|val3|words|val4|in_unit|out_unit|...}}
  • Numbers must be entered in unformatted form (without commas). Values output by the template will be displayed formatted and with a true minus sign where appropriate. To specify with commas, re-code a number as {{formatnum:9,000,500|R}} (becomes 9000500).
  • Optional parameters, in examples below, allow abbreviated units (abbr=on), or U.S. spellings (sp=us for meter), or hyphenation (adj=on), etc.
  • For this template many levels of substitution are possible, hence doing this fully, step by step, is cumbersome. Use Special:ExpandTemplates instead.
  • The template has very limited in-built capacity for dimensional analysis. It is therefore up to the user to ensure that most input and output units are compatible. Do not, for example, attempt to convert barrels to tonnes (but see {{bbl to t}}). Also beware of units with similar names; the code oz, for example, is for the avoirdupois ounce (a unit of mass), do not use this if you want fluid ounces. Note also that the code lb gives pounds mass, for pounds force use lbf.
  • An attempt to convert a unit to itself, e.g., km to km, will result in a template loop.
  • The range functionality is not fully implemented for all units, so experimentation may be required.
  • This documentation page tends to lag behind in terms of what the template can do. For details see the talk page and its archives.
  • Because gadget Navigation popups suppresses the contents of templates in tool tip preview when the user hovers the pointer over a Wikilink, one should avoid using the Convert template in an article's lead section. Using the template will cause a confusing blank space to appear in the tool tip preview instead of vital information, such as the height of a mountain peak or distance between geographic features. In such instances, insert the template into the text, show the preview of your edit, then cut-and-paste the unit and its conversion into the code in place of the template. For example, {{Convert|3006|m|ft}} should be replaced with 3,006 metres (9,862 ft) before saving your edits.

Examples

Single value

Input Displays as
{{convert|3.21|kg|lb}} 3.21 kilograms (7.1 lb)
{{convert|3.21|kg|lb|0}} 3.21 kilograms (7 lb)
{{convert|10|kg |lb |disp=or}} 10 kilograms or 22 pounds
{{convert|6|ft|5|in|m}} 6 feet 5 inches (1.96 m)
{{convert|10|mi}} 10 miles (16 km)
{{convert|100|mpgus}} 100 miles per US gallon (2.4 L/100 km; 120 mpg-imp)
{{convert|120|km/h}} 120 kilometres per hour (75 mph)
{{convert|18|°C|°F}} 18 °C (64 °F)
{{convert|1250|sqft|m2|lk=in|sigfig=2}} 1,250 square feet (120 m2)
Note 'lk=in' links only the input unit. This example is for illustration only, common units of measurement should not be linked. See: wp:overlink.
{{convert|20.5|m3|cuyd|lk=out|abbr=on}} 20.5 m3 (26.8 cu yd)
Note 'lk=out' links only the output unit, cu yd.
{{convert|641|acre|km2 sqmi|lk=on}} 641 acres (2.59 km2; 1.002 sq mi)
Note 'lk=on' links all units. Per guidelines, common units should not be linked. See: wp:overlink.
{{convert|641|acre|km2 sqmi|2|lk=on}} 641 acres (2.59 km2; 1.00 sq mi)
Although 640 acres equals 1 square mile; 641 acres rounded to two decimal places equals 1.00 sq mi.

Range of 2 values

Note: not yet operational for all units
Input Displays as
{{convert|60|and|170|kg|lb}} 60 and 170 kilograms (130 and 370 lb)
{{convert|60|to|170|kg|lb}} 60 to 170 kilograms (130 to 370 lb)
{{convert|60|to(-)|170|kg|lb}} 60 to 170 kilograms (130–370 lb)
{{convert|60|-|170|kg|lb}} 60–170 kilograms (130–370 lb)
{{convert|41|to|50|F|C}} 41 to 50 °F (5 to 10 °C)
{{convert|41|-|50 |F|K}} 41–50 °F (278–326 K)
{{convert|60|x|120|m|ft}} 60 by 120 metres (200 × 390 ft)
{{convert|60|+/-|10|m|ft}} 60 ± 10 metres (200 ± 33 ft)
{{convert|19|to|27|L|USgal}} 19 to 27 litres (5.0 to 7.1 US gal)
{{convert|5|to|7|L|USgal|abbr=mos}} 5 litres to 7 litres (1.3 to 1.8 US gal)
{{convert|4|-|9|L|USgal|abbr=off}} 4–9 litres (1.1–2.4 US gallons)

The following conversions are currently not available as a range of values:

  • Some imperial and US gallon-based units
  • Other fuel-consumption units, except "mpg" or "L100km" shown above.
  • Large scale units (e3, e6, e9)
  • Combination-based units (ft&in, st&lb, lb&oz) due to complexity of the conversion.

Range/set of 3 or 4 values

Note: not yet operational for all units
Input Displays as
{{convert/3 |2|x|4|x|6|m|ft}} 2×4×6 metres (6.6×13×20 ft)
{{convert/3 |60|-|70|-|80|kg|lb}} 60–70–80 kilograms (130–150–180 lb)
{{convert/4 |60|-|70|-|80|-|90|kg|lb}} 60–70–80–90 kilograms (130–150–180–200 lb)
{{convert/3 |60|to|80|or|85|m|ft}} 60 to 80 or 85 metres (200 to 260 or 279 ft)
{{convert/3 |11|by|15|rarely|16|ft|m}} 11 by 15 rarely 16 feet (3.4 by 4.6 rarely 4.9 m)
{{convert/3 |41|to|50|to|60|F|C}} 41 to 50 to 60 °F (5 to 10 to 16 °C)
{{convert/4 |2|to|12|, in summer|25|to|36|C|F}} 2 to 12, in summer 25 to 36 °C (36 to 54, in summer 77 to 97 °F)
{{convert/3 |41|-|50|almost|51|F|K}} 41–50 almost 51 °F (278–283 almost 284 K)

For {{convert/3}} or {{convert/4}}, the separator words can be any text.

Parameters

Parameters
Use US spelling attach |sp=us
Make units linked attach |lk=on   to link all units (default: lk=off)
attach |lk=in   to link only the input units
attach |lk=out  to link only the output units
(The manual of style suggests that you should not link common units of measurement).
Use the adjective form, or insert mid-text words attach |adj=on (e.g. "The 190-foot (58 m) bridge" as opposed to "The 190 feet..."). This produces the adjective form—the unit name in the singular with a hyphen (according to the Manual of Style).
attach |adj=mid (e.g. "The 190-foot bridge (58 m)" as: |adj=mid|bridge, or "The 190-foot-long bridge (58 m)" as: |adj=mid|-long bridge)
Any rounding-parameter should follow the mid-text: "text|0".
Abbreviate units, or not attach |abbr=on to show unit symbols
attach |abbr=off   to show all unit names in full words
attach |abbr=in to abbreviate input units
attach |abbr=out to abbreviate output units
attach |abbr=values to suppress unit names & show only values. So, {{convert|6|mi|abbr=values}} gives: 6 (9.7).
Change "( )" to display other separators attach |disp=comma to put comma, not brackets/parentheses
attach |disp=or to put "or" between units.
The default value is:  disp=b for brackets/parentheses.
Change "( )" to customized separators attach |disp=x| (begin | end) to show "xx (begin yy end)" See example 1
attach |disp=x|; to show "xx; yy" See example 2
attach |disp=x| (same as |) to show "xx (same as yy)". See example 3
Example 1: {{convert|9|km|mi|disp=x| [|]}}9 kilometres [5.6 mi] (note space before [|)
Example 2: {{convert|9|km|mi|disp=x|;}}9 kilometres;5.6 mi
Example 3: {{convert|10|km|mi|disp=x| (about |)}}10 kilometres (about 6.2 mi) (note spaces used within the code).
Display output only attach |disp=output only to show result number & unit
attach |disp=output number only to show just number
Note when using "disp=output only" then the unit name can still be shown as full words by abbr=off or linked by lk=on.
Display units inverted as reverse order attach |disp=flip  to reverse the order & show output unit first.
So, {{convert|6|km|disp=flip}} shows "3.7 miles (6 km)".
To get symbol "mi" use abbr=in, to abbreviate the input unit (left-side unit).
Display unit name (only) attach |disp=unit to show the unit name for a symbol
The unit name will be plural when the amount is not 1, or hyphenated when adj=on. So, {{convert|2|cuyd|disp=unit}} shows "cubic yards" plural.
Display amounts as table cells attach |disp=table (or |disp=tablecen) Note: For use in tables, the template must start on a new line after a pipe. Only the number will be displayed unless you set |abbr=on, |lk=on, |lk=in or |lk=out. Example: here
Round to a specified number of significant figures attach |sigfig={some integer greater than zero}. In the case of temperatures Celsius or Fahrenheit this refers to the difference with the absolute-zero temperature. For example, at room temperature two significant digits means rounded to tens of degrees.
Round by 5 attach |disp=5  to round the output amount to the nearest 5 units. Not supported for all options.
Let Convert decide the unit to convert to skip the precision parameter (the 3rd or 4th unnamed parameter) e.g. {{convert|100|km|kn}} gives 100 kilometres (190,000 kn) and {{convert|100|km}} gives 100 kilometres (62 mi).
Display input value with a fraction {{convert|3/8|in|mm|3|abbr=on}} → 38 in (9.525 mm) or {{convert|11+1/4|in|cm|2|abbr=on}} → 11+14 in (28.58 cm)

For negative amounts, use two minus signs (hyphens): -11-1/4.

Generate a hidden sort key for use with a sortable table attach |sortable=on to generate a hidden sort key (in the form of <span style="display:none">00000005</span>) so that sortable tables will sort correctly. This takes the first numeric value and left pads it with zeros to 16 places. It ignores any additional values, ie, if you use 6|ft|2|in as the value, it will only use the 6 for the sort key. This will cause numeric values to sort in numeric order, ie: 5, 10, 15 instead of 10, 15, 5.

Parameters still under construction

Parameters still under construction. May not work in all situations
Round by 5 attach |disp=5  to round output to nearest 5 units. Might not work when linking unit names.
disp=tablecen Similar to disp=table except that the values with be centered within the column. See the tables at La Nouvelle branch, BM-21 Grad for in use examples.
disp=comma The two values will be separated by a comma, for situations where the first value is already within parentheses. See the Geography tables on Labrador for an example.
abbr=in Abbreviates only the input unit.
abbr=out Abbreviates only the output unit.
abbr=comma Abbreviates (removes) commas. This is a limited, temporary option, until comma=off can be implemented. For ranges, using abbr=comma conflicts with internal options, so instead, append "nocomma" to a range-word: tonocomma, bynocomma, andnocomma, -nocomma & xnocomma.
abbr=mos For ranges, abbreviates with the input unit repeated, twice. Not to be confused with the specifications at MOS:NUM#Conventions.
disp=br Shows square brackets "[ ]" instead of parentheses "( )" in output. Example: 55 miles [89 km]. This option can be used in direct quotes, to show conversions in editorial brackets. See: attach |disp=x|[|], above, as another way of showing brackets "[ ]".

Rounding

Convert supports four types of rounding:

Rounding to a given precision
Specify the desired precision with the fourth unnamed parameter (or third unnamed parameter if the "convert to" parameter is omitted; or fifth unnamed parameter if a range is specified; or fourth unnamed parameter again if a range is specified and the "convert to" parameter is omitted; needs to be replaced with a "precision" named parameter). The conversion is rounded off to the nearest power of 110 this number. For instance, if the result is 8621 and the round number is '-2', the result will be 8600. If the result is '234.0283043' and the round number is '0', the result will be 234.
Rounding to a given number of significant figures
Specify the desired number of significant figures using |sigfig={some integer greater than zero} as noted above.
Default rounding
If neither the desired precision nor the desired number of significant figures are specified, the conversion will be rounded either to a comparable precision as the input value (the number of digits after the decimal point—or the negative of the number of non-significant zeroes before the point—is increased by one if the conversion is a multiplication by a number between 0.02 and 0.2, remains the same if the factor is between 0.2 and 2, is decreased by 1 if it is between 2 and 20, and so on) or to two significant figures, whichever is the most precise. An exception to this is temperature wherein the conversion will be rounded either to precision comparable to that of the input value or to that which would give three significant figures when expressed in kelvins, whichever is the most precise.
Examples of default rounding
Input Displays as Note
{{convert|550|ft|m|0}} 550 feet (168 m) Approximate value is 167.64 m
{{convert|550|ft|m}} 550 feet (170 m) Rounds to 170, when approximate value is 167.64 m
{{convert|500|ft|m|0}} 500 feet (152 m) Approximate value is 152.4 m
{{convert|500|ft|m}} 500 feet (150 m) Rounds to 150, when approximate value is 152.4 m

Units supported

The table below lists units supported by this template. It is divided up according to the quantity being measured. Not all supported units are listed here; there are links to more complete lists for each quantity.

The codes listed in the code column (column 3) are accepted as input by the template. These can be used as the second or third unnamed parameter. For some units there exist alternative codes. These are listed in brackets and have been incorporated to make the code more flexible for editors, e.g. °F or F may be entered.

The codes listed in the combinations column (column 7) can be used to produce multiple conversions. They can only be used as the third unnamed parameter, e.g. {{convert|55|nmi|km mi}} produces "55 nautical miles (102 km; 63 mi)".

Abridged list of units supported by {{Convert}}
Explanation
system unit unit-
code
symbol or
abbrev.
notes conversion factor combination output units
the system(s) to which the unit belongs units listed by name unit-code to use in template symbols shown in output other notes about the units conversion factors used to convert to and from the SI base unit output codes for multiple conversions


LENGTH
(Full list)
system unit unit-
code
abbrev-
iation
notes conversion
factor/m
combination output units
SI megametre Mm Mm US spelling: megameter
1,000,000
kilometre km km US spelling: kilometer
1,000
  • km mi
metre m m US spelling: meter
1
  • m ft
  • m ftin
centimetre cm cm US spelling: centimeter
0.01
  • cm in
millimetre mm mm US spelling: millimeter
0.001
  • mm in
micrometre μm (um) µm US spelling: micrometer
0.000001</small>
nanometre nm nm US spelling: nanometer
0.000000001</small>
non-SI metric ångström Å
(angstrom)
Å 0.0000000001
Imperial
&
US customary
mile mi mi 1,609.344
  • mi km
furlong furlong 201.168
chain chain 20.1168
rod rd rd For other names of this unit see the full list. 5.0292</small>
fathom fathom assumes 1 fathom ≡ 6 ft 1.8288
yard yd yd assumes the international definition 0.9144</small>
foot ft (foot) ft Code "foot" will show "foot" if plural. 0.3048
  • ftin (feet and inches)
  • ft m (foot m)
inch in in 0.0254
  • in cm
  • in mm
Other nautical mile nmi nmi the international standard nautical mile
For other nautical miles see the full list.
1,852
parsec pc pc 3.0856775814672×10^16
light-year ly ly 9.4607304725808×10^15
astronomical unit AU AU 149,597,870,700</small>


AREA
(Full list)
system unit unit-
code
abbrev-
iation
notes conversion factor/m2 combinations
SI square kilometre km2 km2 US spelling: square kilometer
1,000,000
  • km2 sqmi
square metre m2 m2 US spelling: square meter
1
  • m2 sqft
square centimetre cm2 cm2 US spelling: square centimeter
0.0001</small>
  • cm2 sqin
square millimetre mm2 mm² US spelling: square millimeter
0.000001</small>
  • mm2 sqin
non-SI metric hectare ha ha 10,000
Imperial
&
US customary
square mile sqmi sq mi 2,589,988.110336
  • sqmi km2
acre acre 4,046.856422
square yard sqyd sq yd 0.83612736</small>
square foot sqft
(sqfoot)
sq ft Code "sqfoot" will show "square foot" if plural. 0.09290304
  • sqft m2 (sqfoot m2)
square inch sqin sq in 0.00064516</small>
  • sqin cm2
Other square nautical mile sqnmi sq nmi 3,429,904
dunam dunam For alternative spellings and definitions see the full list 1,000
tsubo tsubo (400/121)


VOLUME
(Full list)
system unit unit-
code
abbrev-
iation
notes conversion factor/m3 combinations
SI cubic metre m3 m3 US spelling: cubic meter
one kilolitre
1
cubic centimetre cm3 cm3 US spelling: cubic centimeter
one millilitre
0.000001</small>
cc cc
cubic millimetre mm3 mm³ US spelling: cubic millimeter
0.000000001</small>
non-SI metric kilolitre kl kl US spelling: kiloliter
one cubic metre
1
kL kL
litre l l US spelling: liter
one cubic decimetre
Allows triple output units. See: full list.
0.001
  • l impgal
  • l USgal
  • l U.S.gal
  • l USdrygal
  • l U.S.drygal
L L
  • L impgal
  • L USgal
  • L U.S.gal
  • L USdrygal
  • L U.S.drygal
centilitre cl cl US spelling: centiliter
0.00001
cL cL
millilitre ml ml US spelling: milliliter
one cubic centimetre
0.000001
  • ml impoz
  • ml USoz
  • ml U.S.oz
mL mL
  • mL impoz
  • mL USoz
  • mL U.S.oz
Imperial
&
US customary
cubic yard cuyd cu yd 0.764554857984
cubic foot cuft (cufoot) cu ft Code "cufoot" will show "cubic foot" if plural. 0.028316846592</small>
cubic inch cuin cu in 0.000016387064</small>
Imperial barrel impbbl imp bbl 36 imp gal 0.16365924
bushel impbsh imp bsh 8 imp gal 0.03636872
impbu imp bu
gallon impgal imp gal 4.54609 litres by definition, also
4 imp qt or 8 imp pt or 160 imp fl oz
Allows triple output units. See: full list.
0.00454609
  • impgal l
  • impgal L
  • impgal USgal
  • impgal U.S.gal
  • impgal USdrygal
  • impgal U.S.drygal
quart impqt imp qt 1/4 imp gal or 40 imp fl oz 0.0011365225
pint imppt imp pt 1/8 imp gal or 20 imp fl oz 0.00056826125
fluid ounce impoz(impfloz) imp fl oz 1/160 imp gal 0.0000284130625
  • impoz USoz
  • impoz U.S.oz
  • impoz ml
  • impoz mL
US customary
liquid measure
barrel USbbl US bbl 31½ US gal
used for liquids except for oil and beer (see the full list)
0.119240471196
U.S.bbl bbl
barrel oilbbl bbl 42 US gal 0.158987294928
beer barrel USbeerbbl
(usbeerbbl)
US bbl 0.117347765304
U.S.beerbbl
(usbeerbbl)
U.S. bbl
US gallon USgal US gal 231 cubic inches by definition, also
4 US qt or 8 US pt or 128 US fl oz
Allows triple output units. See: full list.
0.003785411784
  • USgal l
  • USgal L
  • USgal impgal
U.S.gal U.S. gal
  • USgal l
  • USgal L
  • USgal impgal
quart USqt US qt 1/4 US gal or 32 US fl oz 0.000946352946
U.S.qt U.S. qt
pint USpt US pt 1/8 US gal or 16 US fl oz 0.000473176473
U.S.pt U.S. pt
fluid ounce USoz
(USfloz)
US fl oz 1/128 US gal 0.0000295735295625
  • USoz ml
  • USoz mL
  • USoz impoz
U.S.oz
(U.S.floz)
U.S. fl oz
  • U.S.oz ml
  • U.S.oz mL
  • U.S.oz impoz
US customary
dry measure
barrel USdrybbl US bbl 105/32 US bsh 0.11562819898508
U.S.drybbl U.S. bbl
bushel USbsh US bsh 2150.42 cubic inches by definition 0.03523907016688
USbu U.S. bu
U.S.bsh U.S. bsh
U.S.bu U.S. bu
dry gallon USdrygal US dry gal 1/8 US bsh
Allows triple output units. See: full list.
0.00440488377086
  • USdrygal l
  • USdrygal L
  • USdrygal impgal
U.S.drygal U.S. dry gal
  • U.S.drygal l
  • U.S.drygal L
  • U.S.drygal impgal
dry quart USdryqt US dry qt 1/32 US bsh 0.001101220942715
U.S.dryqt U.S. dry qt
dry pint USdrypt US dry pt 1/32 US bsh 0.0005506104713575
U.S.drypt U.S. dry pt


SPEED
(Full list)
system unit unit-
code
abbrev-
iation
notes conversion factor/(m/s) combinations
SI metre per second m/s m/s US spelling: meter per second
1
  • m/s ft/s (m/s foot/s)
non-SI metric kilometre per hour km/h km/h US spelling: kilometer per hour
(5/18)
  • km/h mph
Imperial
&
US customary
mile per hour mph mph 0.44704
  • mph km/h
  • mph kn
foot per second ft/s (foot/s) ft/s Code "foot/s" will show "foot per second" if plural. 0.3048</small>
  • ft/s m/s
Maritime units knot kn (knot) kn (4.63/9)
  • kn mph


FORCE
(Full list)
system unit unit-
code
abbrev-
iation
notes conversion factor/N combination output units
SI giganewton GN GN Allows triple output units. See: full list. 1,000,000,000
  • GN LT-f
  • GN LTf
  • GN ST-f
  • GN STf
meganewton MN MN Allows triple output units. See: full list. 1,000,000</small>
  • MN LT-f
  • MN LTf
  • MN ST-f
  • MN STf
kilonewton kN kN Allows triple output units. See: full list. 1,000</small>
  • kN LT-f
  • kN LTf
  • kN ST-f
  • kN STf
newton N N 1</small>
  • N lb-f
  • N lbf
  • N oz-f
  • N ozf
millinewton mN mN 0.001</small>
  • mN oz-f
  • mN ozf
  • mN gr-f
  • mN grf
micronewton μN (uN) µN 0.000001</small>
  • μN gr-f
  • μN grf
nanonewton nN nN 0.000000001</small>
  • nN gr-f
  • nN grf
cgs megadyne Mdyn Mdyn 10
kilodyne kdyn kdyn 0.01</small>
dyne dyn
(dyne)
dyn 0.00001
millidyne mdyn mdyn 0.00000001</small>
Metric gravitational units tonne-force t-f tf 9,806.65
tf tf
kilogram-force kg-f kgf 9.80665</small>
kgf kgf
gram-force g-f gf 0.00980665</small>
gf gf
milligram-force mg-f mgf 0.00000980665</small>
mgf mgf
Avoirdupois-based units poundal pdl pdl 0.138254954376
long ton-force LT-f LTf 9,964.01641818352
  • LT-f ST-f
LTf LTf
  • LTf STf
short ton-force ST-f STf 8,896.443230521</small>
  • ST-f LT-f
STf STf
  • STf LTf
pound-force lb-f lbf 4.4482216152605</small>
lbf lbf
grain-force gr-f grf 0.0006354602307515
grf grf


ENERGY
(Full list)
system unit unit-
code
abbrev-
iation
notes conversion factor/J combinations
SI gigajoule GJ GJ 1,000,000,000
megajoule MJ MJ 1,000,000</small>
kilojoule kJ kJ 1,000</small>
hectojoule hJ hJ 100</small>
decajoule daJ daJ 10</small>
joule J J 1</small>
decijoule dJ dJ 0.1</small>
centijoule cJ cJ 0.01</small>
millijoule mJ mJ 0.001</small>
microjoule μJ (uJ) µJ 0.000001</small>
nanojoule nJ nJ 0.000000001</small>
cgs megaerg Merg Merg 0.1
kiloerg kerg kerg 0.0001</small>
erg erg erg 0.0000001</small>
Watt-hour multiples terawatt-hour TWh TWh 3.6×10^15
TW.h TW·h
gigawatt-hour GWh GWh 3.6×10^12</small>
GW.h GW·h
megawatt-hour MWh MWh 3,600,000,000</small>
MW.h MW·h
kilowatt-hour kWh kWh 3,600,000
kW.h kW·h
watt-hour Wh Wh 3,600</small>
W.h W·h
Electron-
volt
multiples
gigaelectronvolt GeV GeV 0.0000000001602176487
megaelectronvolt MeV MeV 1.602176487×10^−13</small>
kiloelectronvolt keV keV 1.602176487×10^−16</small>
electronvolt eV eV 1.602176487×10^−19</small>
millielectronvolt meV meV 1.602176487×10^−22
Calorie multiples calorie Cal Cal The thermo-chemical calorie is the default definition. For others, see the full list. 4,184
megacalorie Mcal Mcal 4,184,000
kilocalorie kcal kcal 4,184
calorie cal cal 4.184
millicalorie mcal mcal 0.004184
pound/
ounce
-foot/
inch-hour-minute-second
foot-poundal ftpdl ft·pdl 0.0421401100938048
foot-pound (energy) ftlbf ft·lbf 1.3558179483314004</small>
ftlb-f ft·lbf
inch-pound force inlbf in·lbf 0.1129848290276167</small>
inlb-f in·lbf
inch-ounce force inozf in·ozf 0.00706155181422604375
inoz-f in·ozf
horsepower-hour hph hp·h 2,684,519.537696172792
British thermal unit British thermal unit Btu Btu The International Steam Table British thermal unit is used. For others, see the full list. 1,055.05585262
BTU BTU
TNT-based units gigatonne of TNT GtTNT 4.1840×10^18
gigaton of TNT GtonTNT
megatonne of TNT MtTNT 4.184×10^15
megaton of TNT MtonTNT Mt
kilotonne of TNT ktTNT 4.184×10^12
kiloton of TNT ktonTNT kt
tonne of TNT tTNT 4,184,000,000
ton of TNT tonTNT
Other
Hartree Eh Eh 4.35974417×10^−18
rydberg Ry Ry 2.1798741×10^−18</small>
tonne of oil equivalent toe toe 41,868,000,000</small>
barrel of oil equivalent BOE BOE 6,117,863,200</small>
cubic foot of natural gas cuftnaturalgas (cufootnaturalgas) Unit-code cufootnaturalgas will show "cubic foot of natural gas" if plural. 1,055,055.85262
litre-atmosphere latm l·atm 101.325</small>
Latm L·atm
gallon-atmosphere impgalatm imp gal·atm 460.63256925
gallon-atmosphere USgalatm
(usgalatm)
US gal·atm 383.5568490138
U.S.galatm
(usgalatm)
U.S. gal·atm


TEMPERATURE
(Full list)
system unit unit-
code
abbrev-
iation
notes conversion
to kelvin
combinations
SI kelvin K K Allows triple output units. See: full list. [K]
  • K °C (K C)
  • K °R (K R)
  • K °F (K F)
degree Celsius °C (C) °C ([°C]+273.15)
  • °C K (C K)
  • °C °R (C R)
  • °C °F (C F)
Imperial
&
US customary
degree Rankine °R (R) °R ([°R]/1.8)
  • °R K (R K)
  • °R °C (R C)
  • °R °F (R F)
degree Fahrenheit °F (F) °F (([°F]+459.67)/1.8)
  • °F K (F K)
  • °F °C (F C)
  • °F °R (F R)
Celsius change C-change Example:  {{convert|5|C-change}}
Fahrenheit change F-change Example:  {{convert|10|F-change}}


MASS
(Full list)
system unit unit-
code
abbrev-
iation
notes conversion factor/kg combination output units
SI kilogram kg kg Allows triple output units. See: full list. 1
  • kg lb
  • kg st
gram g g 0.001
  • g oz
milligram mg mg 0.000001</small>
  • mg gr
microgram μg (ug) µg 0.000000001</small>
non-SI metric tonne t t Allows triple output units. See: full list. 1,000
  • t LT
  • t ST
metric ton MT t
  • MT LT
  • MT ST
Avoirdupois long ton LT 2,240 lb
used mostly in the British Commonwealth.
Allows triple output units. See: full list.
1,016.0469088
  • LT t
  • LT MT
  • LT ST
long ton
short ton ST 2,000 lb
used mostly in the US.
Allows triple output units. See: full list.
907.18474
  • ST t
  • ST MT
  • ST LT
short ton
stone st st 14 lb
used mostly in the British Commonwealth except Canada.
Allows triple output units. See: full list.
6.35029318
  • st kg
  • st lb
pound lb lb Allows triple output units. See: full list. 0.45359237
  • lb kg
  • lb st
ounce oz oz 0.028349523
  • oz g
drachm drachm 0.001771845195
drachm dram
grain gr gr equivalent to the troy grain 0.00006479891
Troy troy ounce ozt ozt 0.0311034768
other carat carat 0.0002


TORQUE
(Full list)
system unit unit-
code
abbrev-
iation
notes conversion factor/N·m combinations
Industrial
SI newton metre Nm N·m Triple combinations are also possible. See the full list. 1
  • Nm kg-m
  • Nm ft-lb
Non-SI metric kilogram-meter kg-m kg-m 9.80665
  • kg-m Nm
  • kg-m ft-lb
Imperial
&
US customary
foot-pound ft-lb ft-lb 1.3558
  • ft-lb Nm
  • ft-lb kg-m
Scientific
SI newton metre N-m N·m Triple combinations are also possible. See the full list. 1
  • N-m kgf-m
  • N-m lbf-ft
Non-SI metric kilogram-force meter kgf-m kgf·m 9.80665
  • kgf-m N-m
  • kgf-m lbf-ft
Imperial
&
US customary
pound-foot lbf-ft lbf·ft 1.3558
  • lbf-ft N-m
  • lbf-ft kgf-m
PRESSURE
unit unit-
code
abbrev-
iation
conversion factor/Pa
gigapascal GPa GPa 1,000,000,000
megapascal MPa MPa 1,000,000
kilopascal kPa kPa 1,000
hectopascal hPa hPa 100</small>
pascal Pa Pa 1</small>
millipascal ‎mPa‎ mPa 0.001</small>
millibar mbar mbar 100</small>
mb mb
decibar ‎dbar dbar 10,000</small>
bar bar bar 100,000</small>
kilobarye kBa kBa 100</small>
barye ‎Ba Ba 0.1</small>
standard atmosphere atm atm 101,325</small>
torr Torr Torr (20,265/152)</small>
millimetre of mercury mmHg mmHg 133.322387415</small>
inch of mercury inHg inHg 3,386.388640341
pound per square inch psi psi (444,822,161.52605
/ 64,516)
FUEL EFFICIENCY
unit unit-
code
notes combinations
kilometres per litre km/l (km/L) Use km/L to get "km/L"
  • km/l mpgimp
  • km/l mpgus
litres per 100 kilometres l/100 km (L/100 km) Use L/100 km to get "L/100 km"
  • l/100 km mpgimp
  • l/100 km mpgus
litres per kilometre l/km (L/km) Use L/km to get "L/km"
  • l/km impgal/mi
  • l/km usgal/mi
miles per imperial gallon mpgimp
  • mpgimp mpgus
miles per US gallon mpgus (mpgUS, mpgU.S.) Use mpgUS to get "US"

Use mpgU.S. to get "U.S."
mpgus will give "U.S." if spelling is
set to US & "US" otherwise

  • mpgus mpgimp
imperial gallons per mile impgal/mi
  • impgal/mi
US gallons per mile usgal/mi (USgal/mi, U.S.gal/mi) As above with the us vs US vs U.S.
  • usgal/mi
The mpgUS, mpgU.S., USgal/mi vs U.S.gal/mi, km/L, L/100 km and L/km variants work within combinations also (making 36 combinations in total).
POWER
Watts, kilowatts, milliwatts, etc. are supported. As is horsepower (English & metric). Use standard abbreviations as input code (lower case hp for horsepower, for example)
POPULATION DENSITY
unit unit-
code
notes combinations
inhabitants per square kilometre PD/sqkm PD stands for population density, i.e. humans (inhabitants)
  • PD/sqkm PD/sqmi
per square kilometre /sqkm Used when the word 'inhabitants' would be inappropriate.
  • /sqkm /sqmi
inhabitants per hectare PD/ha
  • PD/ha PD/acre
per hectare /ha
  • /ha /acre
inhabitants per square mile PD/sqmi PD stands for population density, i.e. humans (inhabitants)
  • PD/sqmi PD/sqkm
per square mile /sqmi Used when the word 'inhabitants' would be inappropriate.
  • /sqmi /sqkm
inhabitants per acre PD/acre
  • PD/acre PD/ha
per acre /acre
  • /acre /ha
COST PER UNIT MASS
unit unit-
code
notes combinations
dollars per pound $/lb "$" can mean US$, HK$, etc.
  • (none)
dollars per kilogram $/kg
  • (none)
dollars per troy ounce $/ozt 12 troy ounces in 1 troy pound
  • (none)

Examples

See also

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