How many grams are in one kilogram?

There are 1,000 grams in 1 kilogram.

How do you convert grams to kilograms?

Multiply the number of grams by 0.001 — or use the formula kg = g ÷ 1,000.

What is 6 grams in kilograms?

6 grams is 0.006 kilograms. 6 ÷ 1,000 = 0.006 kilograms.

Is the grams to kilograms conversion exact?

Yes. The relationship is fixed by definition, so 0.001 is an exact conversion factor — only the displayed result is rounded.

Grams to Kilograms Converter

Convert grams to kilograms instantly with this free grams to kilograms converter. Enter any value to get an accurate weight & mass conversion, plus the formula, the conversion factor and a full reference table.

What is 1 gram in kilograms?

1 gram is equal to exactly 0.001 kilograms.

1 ÷ 1,000 = 0.001 kilograms

Amount

Result0.001

1 gram = 0.001 kilograms

Grams to Kilograms formula

kg = g ÷ 1,000

The grams to kilograms conversion factor is 0.001, which is exact by definition. 1 gram = 0.001 kilograms, and 1 kilogram = 1,000 grams.

Worked examples

2 grams = 0.002 kilograms — 2 ÷ 1,000 = 0.002 kilograms
6 grams = 0.006 kilograms — 6 ÷ 1,000 = 0.006 kilograms
10 grams = 0.01 kilograms — 10 ÷ 1,000 = 0.01 kilograms

Grams to Kilograms conversion table

Every value below is calculated with the exact conversion factor and rounded for display.

grams to kilograms conversion 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
12 g	0.012 kg
15 g	0.015 kg
20 g	0.02 kg
25 g	0.025 kg
30 g	0.03 kg
50 g	0.05 kg
75 g	0.075 kg
100 g	0.1 kg
500 g	0.5 kg
1,000 g	1 kg

When you need to convert grams to kilograms

Cooking from recipes that give ingredients by weight in a different system.
Checking airline baggage allowances, which are quoted in kilograms almost everywhere except the US.
Recording body weight, gym plate loads or shipping weights across regions.

Getting a feel for the scale

A converted number is easier to trust when you can picture it. These reference points let you sanity-check the result at a glance.

Gram (g)

A US dollar bill weighs about 1 g
A teaspoon of sugar is roughly 4 g

Kilogram (kg)

A litre of water weighs 1 kg
A bag of flour is usually 1 or 1.5 kg

Common mistakes to avoid

Dividing when you should multiply. Because 1 gram = 0.001 kilograms, the answer should be smaller than the number you started with.
Rounding too early. Convert first at full precision, then round the final answer to the precision the task actually needs.

How precise does the answer need to be?

Kitchen scales resolve to about 1 g or 0.1 oz, so two significant figures beyond the decimal point is wasted precision. Postage and freight are normally rounded up to the next billing increment.

How these units are defined

Gram (g): One thousandth of a kilogram; the everyday metric mass unit. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
Kilogram (kg): The SI base unit of mass, defined via the Planck constant. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.

Frequently asked questions

What is 1 gram in kilograms?: 1 gram is equal to 0.001 kilograms.
How many grams are in one kilogram?: There are 1,000 grams in 1 kilogram.
How do you convert grams to kilograms?: Multiply the number of grams by 0.001 — or use the formula kg = g ÷ 1,000.
What is 6 grams in kilograms?: 6 grams is 0.006 kilograms. 6 ÷ 1,000 = 0.006 kilograms.
Is the grams to kilograms conversion exact?: Yes. The relationship is fixed by definition, so 0.001 is an exact conversion factor — only the displayed result is rounded.