Number to Scientific Prefix
Convert a numeric value to SI-prefixed text (aka engineering / metric prefix). Bonus: binary prefixes!
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Cite As
Stephen23 (2026). Number to Scientific Prefix (https://au.mathworks.com/matlabcentral/fileexchange/33174-number-to-scientific-prefix), MATLAB Central File Exchange. Retrieved .
Acknowledgements
Inspired by: num2eng, eng2num, num2eng, num2str with metric prefix, num2sci, sci2num, Customizable Natural-Order Sort, MetricPrefixStr - Print SI Prefix Formatted Numbers, Number to Words, Words to Number
Inspired: TMM reflectivity simulator for DBR microcavity polaritons, Words to Number, Round to Electronic Component Values, num2eng, Vibration Nomogram, NUM2ENG: Fast number to engineering notation (SI) conversion, Customizable Natural-Order Sort, Numeric to Ordinal-String, Number to Words, Natural-Order Row Sort, Natural-Order Filename Sort, Interactive Regular Expression Tool
General Information
- Version 5.0.5 (35.5 KB)
MATLAB Release Compatibility
- Compatible with R2009b and later releases
Platform Compatibility
- Windows
- macOS
- Linux
| Version | Published | Release Notes | Action |
|---|---|---|---|
| 5.0.5 | * Documentation changes |
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| 5.0.4 | - Simplify trailing zero removal.
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| 5.0.3 | * convert test function to class. |
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| 5.0.2 | - Code and documentation refactoring
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| 5.0.1 | - Documentation improvements.
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| 5.0.0 | * New options and option parsing.
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| 4.1.5 | * update image. |
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| 4.1.4 | * Documentation improvements.
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| 4.1.3 | * Improve test function robustness. |
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| 4.1.2 | * Correct SEE ALSO references. |
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| 4.1.1 | * Update screenshot. |
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| 4.1.0 | * Add 3rd and 4th output arguments.
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| 4.0.2 | * Fix bug with fixed-prefix special-case values (0, Inf, NaN).
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| 4.0.1 | * Fix HTML table formatting. |
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| 4.0.0 | * Accept string type inputs.
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| 3.2.1 | * Add error IDs. |
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| 3.2.0 | * Add second output argument that indicates if a prefix is used or not.
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| 3.1.3 | * More test cases.
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| 3.1.2 | * Update documentation.
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| 3.1.1 | * Improve documentation. |
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| 3.1.0 | * Return micro character 'µ' (rather than 'u'). |
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| 3.0.1 | * Improve documentation. |
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| 3.0.0 | * Add "fixed" prefix input option.
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| 2.1.0 | * Add HTML documentation.
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| 2.0.0 | * Split subimssion into two: one for num->str, other for str->num.
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| 1.13.0 | - Improve handling of trailing zeros.
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| 1.12.0 | - Default is now lower-case E-notation. |
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| 1.11.0 | - Add control over allowing trailing zeros in string.
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| 1.10.0 | - Edit the help section a little. |
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| 1.9.0 | - Str->Num: space character between coefficient and prefix is optional.
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| 1.8.0 | Upload all four functions for converting between numeric and string, for both SI and binary. |
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| 1.6.0 | - Fix edge case (val=1). |
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| 1.5.0 | - Allow positive/negative input value.
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| 1.3.0 | Provide useage examples. |
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| 1.1.0 | Edit file description to be more accurate. |
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| 1.0.0 |
