00610 IUPAC Gold Book - base unit 10.1351/goldbook.B00610 B00610 current 1 Unit of measurement of a base quantity in a given system of quantities. By international agreement, a set of seven dimensionally independent units form the SI base units: the metre, kilogram, second, ampere, kelvin, mole and candela. ampere https://goldbook.iupac.org//terms/view/A00300 base quantity https://goldbook.iupac.org//terms/view/B00609 candela https://goldbook.iupac.org//terms/view/C00787 kelvin https://goldbook.iupac.org//terms/view/K03374 kilogram https://goldbook.iupac.org//terms/view/K03391 metre https://goldbook.iupac.org//terms/view/M03884 mole https://goldbook.iupac.org//terms/view/M03980 second https://goldbook.iupac.org//terms/view/S05513 unit https://goldbook.iupac.org//terms/view/U06561 PAC, 1986, 58, 1405. 'Recommendations for the presentation of thermodynamic and related data in biology (Recommendations 1985)' on page 1406 (https://doi.org/10.1351/pac198658101405) PAC, 1996, 68, 957. 'Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)' on page 963 (https://doi.org/10.1351/pac199668040957) https://goldbook.iupac.org/terms/view/B00610/html https://goldbook.iupac.org/terms/view/B00610/json https://goldbook.iupac.org/terms/view/B00610/plain Citation: 'base unit' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.B00610 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-06-12T05:58:22+00:00