Grams to kilograms

1 gram = 0.001 kilograms

Type a value in grams (g) to get kilograms (kg) straight away. A gram is smaller than a kilogram, so the number goes down. Both units belong to weight, measured here against the kilogram.

FromTo0.001

1 g = 0.001 kg

Formula

kg = g × 0.001

One gram is 0.001 kilograms, so multiply by that factor. You can also divide by 1,000, the number of grams in one kilogram. Here g is the value in grams and kg is the result in kilograms.

Worked example: 250 grams × 0.001 = 0.25 kilograms.

Grams to kilograms table

grams (g)	kilograms (kg)
1 g	0.001 kg
2 g	0.002 kg
3 g	0.003 kg
4 g	0.004 kg
5 g	0.005 kg
6 g	0.006 kg
7 g	0.007 kg
8 g	0.008 kg
9 g	0.009 kg
10 g	0.01 kg
15 g	0.015 kg
20 g	0.02 kg
25 g	0.025 kg
30 g	0.03 kg
40 g	0.04 kg
50 g	0.05 kg
60 g	0.06 kg
75 g	0.075 kg
100 g	0.1 kg

Everyday grams in kilograms

What it is	g	kg
a paper clip (about)	1 g	0.001 kg
a teaspoon of sugar (about)	5 g	0.005 kg
about one ounce	28 g	0.028 kg
the per-100 g line on food labels	100 g	0.1 kg
about one pound	454 g	0.454 kg

Quick estimate in your head

Divide by 10^3: move the decimal point 3 places left.

About the units

Gram (g). One thousandth of a kilogram. Used for food, post and jewellery.

Kilogram (kg). The SI base unit of mass, defined through the Planck constant since 2019.

Going the other way, 1 kilogram is 1,000 grams.

Questions

How many kilograms are in 1 gram?

1 gram is 0.001 kilograms, and 1 kilogram is 1,000 grams.

How do I convert grams to kilograms?

Use kg = g × 0.001. For example, 250 grams × 0.001 = 0.25 kilograms.

Is the gram to kilogram factor exact?

Yes, the definitions are exact, so the factor is exact. Results here are rounded to 6 significant digits for display.

How much is about one pound in kilograms?

454 g is 0.454 kg.

Source for the conversion factor: NIST SP 811, Appendix B (conversion factors).

Related conversions

All weight converters