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gmass · International · Modern
1 g = 0.001 kg.
mass · British India · 1939 standard
Variant of seer
Source tier Tier A — government / museum / authoritative institutional source · confidence Moderate
mass · International · Modern
1 g = 0.001 kg.
mass · International · Modern
SI base unit of mass. The Planck constant is fixed exactly at 6.62607015×10^-34 J·s, which defines the kilogram through the metre and second.
mass · International · Modern
1 tonne = 1000 kg.
mass · UK / US · Modern / historical
1 avoirdupois ounce = exactly 1/16 international pound = 0.028349523125 kg.
mass · UK / US · Modern / historical
1 international avoirdupois pound = exactly 0.45359237 kg.
mass · UK / US · Modern / historical
1 stone = 14 lb = exactly 6.35029318 kg using the international pound.
mass · International · Modern
Dalton/u is 1/12 of the mass of a free carbon-12 atom in its ground state. CODATA 2022: 1.66053906892(52)×10^-27 kg.
approx.mass · Ancient Greece / Rome · Antiquity
Greek talent was not one universal standard.
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