# Template:Order of magnitude/doc

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This is a documentation subpage for Template:Order of magnitude.It contains usage information, categories, interlanguage links and other content that is not part of the original template page. |

### Usage

This template calculates the (decimal) order of magnitude of numbers within the ranges 10^{300} to 10^{−300} and −10^{−300} to −10^{300}.

The template currently gives 0 for 0. Do not rely on this, however, because this mathematically incorrect result is under review (see talk).

### Examples

`{{Order of magnitude|123400}}`

→ 5 [1]`{{Order of magnitude|12340}}`

→ 4 [2]`{{Order of magnitude|1234}}`

→ 3 [3]`{{Order of magnitude|123.4}}`

→ 2 [4]`{{Order of magnitude|12.34}}`

→ 1 [5]`{{Order of magnitude|1.234}}`

→ 0 [6]`{{Order of magnitude|.1234}}`

→ -1 [7]`{{Order of magnitude|.01234}}`

→ -2 [8]`{{Order of magnitude|0}}`

→ 0 [9]`{{Order of magnitude|}}`

→**Expression error: Unexpected = operator.**[10]`{{Order of magnitude}}`

gives 0 [11]