18 grams to kilograms

18 grams = 0.018 kilograms

Rounded to a practical precision: 0.02 kg.

grams

kilograms

How the calculation works

One gram is 0.001 kilograms, so:

18 g × 0.001 = 0.018 kg

Reversing it, 0.018 kilograms ÷ 0.001 returns 18 grams.

Nearby values

Grams	Kilograms
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
21 g	0.021 kg
22 g	0.022 kg

About these units

Gram (g) — A gram is one thousandth of a kilogram and is the everyday unit for food and small quantities.

Kilogram (kg) — The kilogram is the SI base unit of mass, defined since 2019 in terms of the Planck constant.

Frequently asked questions

How many kilograms is 18 grams?

18 grams is 0.018 kilograms.

How do I convert grams to kilograms myself?

Multiply by 0.001. To go back, divide by 0.001 — or multiply by 1000.

Is this figure exact?

The conversion factor between the gram and the kilogram is fixed by definition. The figure above is rounded for readability; the converter carries full precision.

Convert other values

Full grams to kilograms converter · All weight converters