Grams to kilograms

kilograms = grams × 0.001

How to convert grams to kilograms

One gram is 0.001 kilograms, so multiply the number of grams by 0.001. For example, 20 grams is 20 × 0.001 = 0.02 kilograms. To go back, divide by the same number, or multiply by 1,000.

Quick estimate

Multiplying by about 0.001 gets within 0.0% of the exact answer, which is enough to check that a result makes sense.

Where it comes up

Mass conversions come up in cooking and baking, shipping and luggage limits, body weight, medicine doses and buying food by weight.

grams	kilograms
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
11 g	0.011 kg
12 g	0.012 kg
13 g	0.013 kg
14 g	0.014 kg
15 g	0.015 kg
16 g	0.016 kg
17 g	0.017 kg
18 g	0.018 kg
19 g	0.019 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
70 g	0.07 kg
75 g	0.075 kg
80 g	0.08 kg
90 g	0.09 kg
100 g	0.1 kg
120 g	0.12 kg
150 g	0.15 kg
200 g	0.2 kg
250 g	0.25 kg
300 g	0.3 kg
400 g	0.4 kg
500 g	0.5 kg
750 g	0.75 kg
1,000 g	1 kg
1,500 g	1.5 kg
2,000 g	2 kg
5,000 g	5 kg
10,000 g	10 kg

Questions

How many kilograms are in a gram?

0.001 kilograms.

How do I convert grams to kilograms in a spreadsheet?

Put the value in A1 and type =A1*0.001, then fill the formula down the column.

Are the values in the table exact?

They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.