Standards Reference

Units of Measure

Authoritative reference knowledge about measurement units, prefixes, and data sizes — curated for software engineers who care about precision.

24
SI / Decimal Prefixes
8
Binary Prefixes
32
Base Units
15
Glossary Terms
Prefixes
SI/Metric decimal prefixes and IEC binary prefixes, with symbols and exponents.
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Base Units
All 32 measurement units grouped by physical category, with symbols.
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Data Sizes
Decimal vs. binary byte quantities — why 1 GB ≠ 1 GiB and what it means.
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Glossary
Definitions for key terms in measurement, unit systems, and API design.
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Standards Reference
SI, IEC, BIPM, NIST, and IEEE standards that define how units and prefixes are used.
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Prefix Converter
Convert any value between SI decimal and IEC binary prefixes, powered live by the Unitify library.
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