Scientific Prefix to Number
Convert SI-prefixed text (aka engineering / metric prefix) into numeric values. Bonus: binary prefixes!
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Cite As
Stephen23 (2026). Scientific Prefix to Number (https://ch.mathworks.com/matlabcentral/fileexchange/53886-scientific-prefix-to-number), 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: Round to Electronic Component Values, Custom List / Arbitrary Sequence Sort, Customizable Natural-Order Sort, Natural-Order Row Sort, Natural-Order Filename Sort
General Information
- Version 5.0.4 (27 KB)
MATLAB Release Compatibility
- Compatible with R2009b and later releases
Platform Compatibility
- Windows
- macOS
- Linux
| Version | Published | Release Notes | Action |
|---|---|---|---|
| 5.0.4 | - Rename option "all24" to "all".
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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 | * Optimisations for code performance.
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| 4.0.2 | * Add plenty of new testcases. |
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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 | * Case-insensitive matching of INF and NaN (just like SSCANF etc).
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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 | * Parse micro characters U+00B5 & U+03BC.
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| 3.0.1 | * Improve documentation. |
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| 3.0.0 | * Simplify algorithm: faster! |
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| 2.1.0 | * Change second input true/false to match NUM2SIP and NUM2BIP.
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| 1.1.0 | * Update FEX examples. |
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| 1.0.0 |
