21 kilograms in grams
Result
The conversion result is: 21 kilograms is equivalent to 21000 grams.[1]
Conversion formula
How to convert 21 kilograms to grams?
We know (by definition) that: 1 kg = 1000 g.
We can set up a proportion to solve for the number of grams.
1 kg / 21 kg = 1000 g / x g
Now, we cross multiply to solve for our unknown x:
x g = (21 kg / 1 kg) * 1000 g → x g = 21000 g
Conclusion:
21 kg = 21000 g
Conversion in the opposite direction
The inverse of the conversion factor is that 1 gram is equal to 4.76190476190476e-05 times 21 kilograms.
It can also be expressed as: 21 kilograms is equal to 1 / 4.76190476190476e-05 grams.
Approximation
An approximate numerical result would be: twenty-one kilograms is about twenty-one thousand grams, or alternatively, a gram is about zero times twenty-one kilograms.
Footnotes
[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).
Results may contain small errors due to the use of floating point arithmetic.