Funts to Kilograms (funt to kg)

1 funt (Russian pound) equals 0.40951718 kilograms exactly.

1 funt (Russian pound) = 0.40951718 kilograms

How to convert funts to kilograms

To convert funts to kilograms, multiply the number of funts by 0.40951718. This factor is exact. To go the other way, multiply kilograms by 2.441899996 (rounded).

kilograms = funts × 0.40951718

Example: 10 funts = 4.0951718 kilograms.

About these units

Funt (Russian Pound) (funt)

Russian (Imperial)Historical unit (no longer in standard use)

About 409.52 g (a little under 0.9 lb). The standard Russian pound until metrication.

Funt is the Russian cousin of the English pound, and its name shares the same Latin root as pound, German Pfund and Dutch pond. Before the metric system it was the basic unit from which every other Russian weight was built, so that zolotniks, lots and poods were all counted as parts or multiples of it.

The figure used here is 409.51718 g, about 14.445 ounces or 0.903 of an avoirdupois pound. Russian sources have long given slightly different decimals for the funt, because the standard was a physical weight and later conversions to metric were refined, so the last few digits vary between references.

One funt contains 96 zolotniks, and 40 funts make a pood. An apothecaries' funt was lighter, at 84 zolotniks. Imperial Russia began using the metric system in 1899 and made it compulsory in 1918, and the funt gradually disappeared from shops.

1 funt (Russian pound) = 0.40951718 kilograms (exactly).

Sources: Wikipedia: Funt (mass); Wikipedia: Obsolete Russian units of measurement

Kilogram (kg)

Metric (SI)Current unit

The SI base unit of mass. Since 2019 it is defined by fixing the value of the Planck constant, replacing the old platinum-iridium cylinder in Paris.

Oddly for a base unit, the kilogram began life as a derived one. In 1793 revolutionary France defined the grave as the mass of one litre of water, and a decree of 1795 then replaced it with the kilogramme, a name built from the Greek khilioi (a thousand) and gramma, a Late Latin word for a small weight. In 1799 a platinum cylinder, the Kilogramme des Archives, became the physical standard, matching a cubic decimetre of water at its densest, around 4 degrees Celsius. In 1889 the metric community adopted a platinum-iridium cylinder made in 1879, the International Prototype of the Kilogram, nicknamed Le Grand K.

The kilogram is still the only SI base unit with a prefix in its name. Because SI forbids stacked prefixes, a millionth of a kilogram is a milligram rather than a microkilogram, so every mass prefix is attached to the gram. Calibrating every national standard against one object in a vault near Paris meant that all of them drifted relative to it, so in November 2018 member states voted to tie the kilogram to a fixed value of the Planck constant. The change took effect on 20 May 2019. Day to day nothing shifted, but the definition no longer depends on a single piece of metal.

The kilogram is the reference unit for weight & mass on this site.

Sources: NIST: Kilogram introduction (SI redefinition); Wikipedia: Kilogram

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