# How many: grams, decagrams, milligrams are there in a kilogram?

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A kilogram or a kilogramme (British spelling) is a standard weight unit in the metric [SI] system. It is abbreviated to ‘kg’.

It is easy to work out how many grammes, decagrammes or milligrammes there are in a kilogramme if you are familiar with the, so called, metric prefixes. A metric prefix is added to the name of a root word to modify its value. In other words, metric prefixes change the meaning of a given base unit to express its multitude or fraction. Hence:

- Kilo- means 1000x (multiplication by one thousand). Therefore, a kilo- gram = 1000 grams.

- Deca- means 10x (multiplication by ten). Therefore, a deca- gram = 10 grams.

- Milli- means 1/1000 (division by one thousand). Therefore, a milli- gram = 0.001 gram.

From there, it’s easy to calculate that 1kg equals:

 1 KILOGRAM 1000 g 100 dag 1 000 000 mg

Did you know?

1. The kilogram is the only base unit in metric [SI] system which has a prefix (‘kilo-’).

2. A kilogram has been established as the weight of a cubic decimeter of water at the temperature of the melting point of ice.

3. The word kilogram / kilogramme stems from the combination of the Greek word khilioi (meaning “thousand”) and the French word gramme, utimately derived from the Latin gramma (meaning “small weight”).

Do you know any other metric prefixes?

Can you calculate how many microgrammes make up a gramme and a kilogramme? (knowing that micro- means 0.000 001)

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## Top Discussions

~ hennas 2023-01-19 10:34:23
 i though highland in scotland may have made the list tbh
~ pcp 2021-07-23 05:33:13
 Technically Scotland doesn't count because they abolished the use of counties, hence why Inverness shire is not on the list.
~ dcd 2021-07-04 17:15:54
 What happened to Invernessshire? at 10,907 km2 it is the biggest. Argyllshire would be up there too. 8,055 km2. This seems...