Kilograms to Dan (Chinese) (kg to dan)

1 kilogram equals 0.02 dan (Chinese) exactly.

1 kilogram = 0.02 dan (Chinese)

How to convert kilograms to dan (Chinese)

To convert kilograms to dan (Chinese), multiply the number of kilograms by 0.02. This factor is exact. To go the other way, multiply dan (Chinese) by 50.

dan (Chinese) = kilograms × 0.02

Example: 10 kilograms = 0.2 dan (Chinese).

About these units

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

Dan (Chinese) (dan)

ChineseTraditional unit (still used in some regions)

100 jin, or 50 kg in the modern market system. Historically known as the picul; Hong Kong's picul is about 60.48 kg.

Dan means a burden, and the character 擔 shows a person carrying a load on a pole across the shoulders. The same unit is written 石 in older texts and is known in English as the picul, a word borrowed from Malay for carrying something on the shoulder. For most of imperial history a dan was 120 catties, roughly what one porter could manage, and it served for rice, salt, tea and other bulk goods moved by caravan, boat or road.

Because the underlying jin changed from dynasty to dynasty, the dan drifted too. The jin was about 250 g before the Qin, around 220 g under the Eastern Han, about 633 g in the Tang and Song periods, and about 590 g under the Ming and Qing. The Republic of China fixed the market system in 1930 and the People's Republic kept it, so the figure used here is 100 jin of 500 g, or exactly 50 kg. That is a convenient fifty-kilogram sack, and it still appears in farm and grain statistics. Hong Kong kept its own picul of 60.478982 kg.

1 dan (Chinese) = 50 kilograms (exactly).

Sources: Wikipedia: Chinese units of measurement; Wikipedia: Picul; Wikipedia: Catty

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