Convert Kilogram to Gram (kg → g)
The kilogram is the base SI unit of mass and the global standard for body weight, food, and commerce.
Kilogram to Gram Conversion Table
10 common values| Kilogram | Gram |
|---|---|
| 1 kg | 1,000 g |
| 5 kg | 5,000 g |
| 10 kg | 10,000 g |
| 25 kg | 25,000 g |
| 50 kg | 50,000 g |
| 100 kg | 100,000 g |
| 250 kg | 250,000 g |
| 500 kg | 500,000 g |
| 1,000 kg | 1,000,000 g |
| 5,000 kg | 5,000,000 g |
How to Convert Kilogram to Gram Manually
Step by StepConverting kilograms to grams is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.
- 1Take your value in kilogramsStart with the number of kilograms (kg) you want to convert.
- 2Multiply by 1,000The conversion factor from kg to g is 1,000. Multiply your value by this number.
- 3Read the result in gramsThe result is your value in grams (g).
Formula
Multiply the value in kilograms by 1,000. For the reverse direction, multiply by 0.001.
g = kg × 1,000kg = g × 0.001Tips
Use these in everyday conversions- 1 kg ≈ 2.205 lb. For quick estimates, double the kg figure and add 10%.
- Body weight is best measured first thing in the morning, after using the bathroom but before breakfast.
- The kg is the only SI base unit whose name contains a prefix — a historical quirk of the metric system.
Common Mistakes
Avoid these- Confusing mass (kg) with weight-force (newtons) in physics problems.
- Using 2 instead of 2.205 when converting kg to pounds — the 2.5% error matters for airline luggage.
- Writing Kg instead of kg — the correct SI abbreviation is lower-case kg.
About Kilogram and Gram
What is the Kilogram?
The kilogram is the base SI unit of mass. Since May 2019, it has been defined by fixing the numerical value of Planck's constant to exactly 6.62607015 × 10⁻³⁴ joule-seconds — a major shift from the previous definition based on a physical platinum-iridium artifact (the International Prototype Kilogram or 'Le Grand K') stored at the BIPM near Paris since 1889. This redefinition links the kilogram to a fundamental constant of nature, making it reproducible by any sufficiently equipped laboratory. The kilogram is the global standard for body weight (most countries quote weight in kilograms), grocery sales, scientific measurements, and engineering. One liter of pure water at 4°C has a mass of almost exactly 1 kg — a coincidence designed into the original 1795 definition. The kilogram relates to the gram (1,000 g = 1 kg), the metric ton (1,000 kg = 1 t), and the pound (1 kg ≈ 2.205 lb).
- Human body weight in most of the world
- Grocery and retail food quantities in Europe
- Scientific and engineering mass measurements
A litre of water weighs 1 kg at 4 °C. An average adult weighs 60–90 kg. A standard bag of flour is 1 kg.
What is the Gram?
The gram equals one thousandth of a kilogram (0.001 kg) and is the everyday metric unit for cooking ingredients, postage, jewelry, pharmaceuticals, and small product weights. Originally defined in 1795 as 'the absolute weight of a volume of pure water equal to a cube of one hundredth of a meter at the temperature of melting ice,' the gram is now formally defined via the kilogram. It relates simply to the milligram (1,000 mg = 1 g) and the kilogram (1,000 g = 1 kg). European nutrition labels universally use grams for ingredient quantities, and recipes worldwide outside North America measure ingredients by mass in grams rather than by volume. Gold and silver are traded in grams for small quantities, while gemstones use carats (0.2 g = 1 carat). A standard paper clip weighs about 1 g.
- European cooking and baking recipes
- Over-the-counter medication dosages
- Gold, silver and gemstone retail (per gram pricing)
A chicken egg weighs about 60 g. A standard bar of chocolate is 100 g. A euro coin weighs 7.5 g.