Grams (g) to Kilograms (kg) Conversion
Grams
The gram is a unit of mass equal to one thousandth of a kilogram (10⁻³ kg) and is the standard unit for small masses in chemistry, pharmacy, food science, and nutrition. In the CGS system, the gram was the fundamental unit of mass. In nutrition, all macronutrients — carbohydrates, proteins, and fats — are quantified in grams per serving.
Kilograms
The kilogram is the SI base unit of mass. From 1889 to 2019, it was defined by the International Prototype of the Kilogram — a physical cylinder of platinum-iridium alloy stored near Paris. In 2019, the kilogram was redefined in terms of Planck's constant (h = 6.62607015 × 10⁻³⁴ J·s), making it the first base unit defined entirely by a fundamental constant of nature. This eliminated the risk of the kilogram gradually changing mass due to contamination of the physical prototype.
| Grams (g) | Kilograms (kg) |
|---|---|
| 0.1 g | 0.0001 kg |
| 1 g | 0.001 kg |
| 2 g | 0.002 kg |
| 3 g | 0.003 kg |
| 5 g | 0.005 kg |
| 10 g | 0.01 kg |
| 20 g | 0.02 kg |
| 30 g | 0.03 kg |
| 50 g | 0.05 kg |
| 100 g | 0.1 kg |
| 1000 g | 1 kg |
Frequently Asked Questions (FAQ)
How many kilograms are in 1 grams?
1 grams (g) is exactly 0.001 kilograms (kg).
How do I convert grams to kilograms?
Multiply the value in grams by 0.001 to get the result in kilograms. Or use the converter above — type any number and see the result instantly.