Convert weight and mass units — kilograms, pounds, ounces, grams, tons, stones.
| Unit | Name | Value |
|---|---|---|
| g | Gram | 1000 |
| mg | Milligram | 1000000 |
| t | Metric Ton | 0.001 |
| lb | Pound | 2.2046244 |
| oz | Ounce | 35.273991 |
| st | Stone | 0.15747312 |
The Kilogram (kg) and the Gram (g) are both units of weight & mass. Converting between them is straightforward using the formula above.
Formula: 1 kg = 1000 g
This converter uses internationally recognized conversion factors. All calculations are performed client-side in your browser — no data is sent to any server.
| Kilogram (kg) | Gram (g) | Real-world context |
|---|---|---|
| 0.001 kg | 1 g | |
| 0.01 kg | 10 g | |
| 0.1 kg | 100 g | |
| 1 kg | 1000 g | bag of flour / sugar |
| 10 kg | 10000 g | dumbbell pair |
1 kilogram (kg) equals exactly 1000 grams (g). Use the formula: kg × 1000 = g.
To convert kilograms to grams, multiply your value in kilograms by 1000. For example, 5 kg × 1000 = 5000 g.
100 kilograms = 100000 grams. Calculation: 100 × 1000 = 100000.
To convert grams back to kilograms, divide by 1000 (or multiply by 0.001). Example: 10 g ÷ 1000 = 0.01 kg.
Yes. This converter uses the internationally recognised exact conversion factor: 1 kg = 1000 g. All calculations are performed in your browser with no rounding until display.
10 kilograms = 10000 grams. Simply multiply by 1000.
Converting kilograms to grams is commonly needed for everyday tasks like cooking recipes, body weight tracking, shopping internationally, or shipping parcels where one system uses kg and another uses g.
The kilogram (kg) is the SI base unit of mass — one of seven fundamental units in the International System. Equal to exactly 1,000 grams, it is the foundation of weight measurement in science, medicine, engineering, and commerce worldwide. Uniquely among SI base units, the kilogram is named with a metric prefix ("kilo-" = 1,000).
The gram (g) is a unit of mass in the metric system equal to one-thousandth of a kilogram (0.001 kg). While the kilogram is the SI base unit, the gram is the practical everyday unit for small masses in cooking, pharmacy, chemistry, and nutrition labelling. The word derives from Late Latin gramma (small weight), itself from Greek.
Defined in 1795 by the French Revolutionary government as the mass of one cubic decimetre of distilled water at 4 °C. A platinum prototype (the Kilogramme des Archives) was created in 1799. From 1889 until 2019, the world's mass standard was the International Prototype Kilogram — a platinum-iridium cylinder stored in Sèvres, France. In 2019, the kilogram was redefined in terms of Planck's constant (h = 6.626 070 15 × 10⁻³⁴ J·s), eliminating the need for a physical artifact.
Interesting fact: The IPK and its official copies drifted apart by up to 50 micrograms over 130 years, motivating the 2019 redefinition. The kilogram is the only SI unit whose name starts with a prefix.
Defined in 1795 by the French Academy of Sciences as the mass of one cubic centimetre of pure water at 4 °C — this made 1 mL of water weigh almost exactly 1 gram. The gram was the practical base of early metric calculations before the kilogram took over as SI base unit in 1875. The relationship 1 mL water ≈ 1 g is still a useful approximation in cooking and chemistry.
Interesting fact: A standard large paperclip weighs about 1 gram. The gram forms the basis for milligram (mg), microgram (μg), and tonne (10⁶ g) through SI prefixes.