Gram to Kilogram Converter
Convert Gram (g) to Kilogram (kg) instantly. 1 g = 0.001 kg.
Mass Converter
26 units available
1 g = 0.001 kg
Formula:
kg = g × 0.001With your value: 1 g = 0.001 kg
How big is that?
Everyday references on a logarithmic scale, all expressed in gram so you can sanity-check the result.
Other Gram to Kilogram conversions
Gram to Kilogram Conversion Table
| Gram (g) | Kilogram (kg) |
|---|---|
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
Kilogram to Gram Conversion Table
| Kilogram (kg) | Gram (g) |
|---|---|
| 0.5 | 500 |
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 15 | 15,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1000 | 1,000,000 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Gram (g)
Mass
Traceable to the kilogram, defined by fixing the Planck constant at 6.626 070 15 × 10⁻³⁴ J·s. Avoirdupois masses derive from the 1959 international pound (0.453 592 37 kg exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Kilogram (kg)
Mass
The kilogram is defined by taking the Planck constant to be exactly 6.626 070 15 × 10⁻³⁴ J·s.
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Gram to Kilogram
To convert from Gram (g) to Kilogram (kg), multiply the value by 0.001.
Formula: kg = g × 0.001
Reverse: g = kg × 1,000
Step-by-Step Example
- Start with your value in Gram. For example: 5 g
- Multiply by the conversion factor: 5 x 0.001
- The result is: 0.005 kg
About Gram
The gram equals one thousandth of a kilogram. It is commonly used for measuring food, ingredients, and small items.
Common uses: cooking, nutrition labels, jewelry.
About Kilogram
The kilogram is the base unit of mass in the SI system. Since 2019, it is defined by the Planck constant rather than a physical artifact.
Fun Fact: Until 2019, the kilogram was defined by a platinum-iridium cylinder kept in Paris, called "Le Grand K."
Common uses: body weight, cooking, shipping.
Frequently Asked Questions
How many Kilogram are in 1 Gram?
There are exactly 0.001 Kilogram in 1 Gram. This means the conversion factor from Gram to Kilogram is 0.001.
What is the formula to convert Gram to Kilogram?
The formula to convert Gram to Kilogram is: kg = g × 0.001. For example, to convert 10 Gram to Kilogram, you would multiply 10 by 0.001.
What is a Gram?
The gram equals one thousandth of a kilogram. It is commonly used for measuring food, ingredients, and small items.
What is a Kilogram?
The kilogram is the base unit of mass in the SI system. Since 2019, it is defined by the Planck constant rather than a physical artifact.
What are the common uses of Gram?
The Gram is commonly used in cooking, nutrition labels, jewelry.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Gram to Kilogram converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/gram-to-kilogram