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Grams to Kilograms Converter

Convert grams (g) to kilograms (kg), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter a weight, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

About valueA number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
About toThe unit you want the answer in. Swap exchanges the two units.
Result
Result
0.001 kg
short tons (US tons)
1.10231131092 × 10⁻⁶ ton
long tons (imperial tons)
9.84206527611 × 10⁻⁷ long ton
metric tons (tonnes)
1 × 10⁻⁶ t
stones
0.000157473044418 st
pounds
0.00220462262185 lb
ounces (avoirdupois)
0.0352739619496 oz
milligrams
1,000 mg
micrograms
1,000,000 µg
carats
5 ct
atomic mass units (daltons)
6.02214075367 × 10²³ u

1 g = 0.001 kg

Show the working
  1. 1 g = 0.001 kg
  2. 1 × 0.001 = 0.001 kg

How to convert grams to kilograms

1 g = 0.001 kg, so multiply by 0.001 to go from grams to kilograms. Going the other way, 1 kg = 1,000 g.

kg = g × 0.001
g = kg × 1,000

Worked example:

1 g = 0.001 kg
5 × 0.001 = 0.005 kg

Grams to kilograms table

GramsKilograms
1 g0.001 kg
2 g0.002 kg
3 g0.003 kg
4 g0.004 kg
5 g0.005 kg
6 g0.006 kg
7 g0.007 kg
8 g0.008 kg
9 g0.009 kg
10 g0.01 kg
15 g0.015 kg
20 g0.02 kg
25 g0.025 kg
30 g0.03 kg
40 g0.04 kg
50 g0.05 kg
75 g0.075 kg
100 g0.1 kg
250 g0.25 kg
500 g0.5 kg
1000 g1 kg

About the units

Grams (g)
Grams, a metric unit. Definition: BIPM SI Brochure.
Kilograms (kg)
Kilograms, a metric unit. Definition: BIPM SI Brochure.

Formula version 0.1.0Reviewed