The kelvin is defined by fixing the numerical value of the Boltzmann constant

the verdict

SUPPORTED

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3 sources for · 0 against

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Is it true that the kelvin is defined by fixing the numerical value of the Boltzmann constant?

Yes. The kelvin is indeed defined by fixing the exact numerical value of the Boltzmann constant, following the International System of Units (SI) redefinition.

Verdict: SUPPORTED · 3 sources for, 0 against · Last checked 5 Aug 2026

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Evidence for · 3

Wikipedia: Kelvin

Reference article covering this claim directly

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Wikipedia: Kelvin. (n.d.). Wikipedia. https://en.wikipedia.org/wiki/Kelvin

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Wikipedia: Boltzmann constant

Reference article covering this claim directly

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Wikipedia: Boltzmann constant. (n.d.). Wikipedia. https://en.wikipedia.org/wiki/Boltzmann_constant

IEEE Trans.Instrum.Measur.: From μ 0 to e : A Survey of Major Impacts for Electrical Measurements in Recent SI Revision

2020

Confirms the kelvin is redefined by fundamental physical constants including the Boltzmann constant.

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Shisong, L., Qing, W., Wei, Z., & Songling, H. (2020). IEEE Trans.Instrum.Measur.: From μ 0 to e : A Survey of Major Impacts for Electrical Measurements in Recent SI Revision. IEEE Trans.Instrum.Measur.. https://doi.org/10.1109/TIM.2020.3010351

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first checked05 Aug 2026

judged → SUPPORTED · 7505 Aug 2026

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