Convert Kilograms to Grams
1000 kilograms is 1,000,000 g. One kilogram is exactly 1000 grams.
1000 kilograms is 1000000 grams, because one kilogram is 1000 grams. To convert kilograms to grams, multiply by 1000; to go the other way, divide by 1000 or multiply by 0.001. The factor is exact rather than rounded: it follows from NIST Handbook 44. The SI base unit of mass, defined since 2019 by fixing the Planck constant rather than by a metal cylinder in Paris.
Factor checked against the defining standard · How we check
- Kilograms × 1000
1000 * 10001,000,000 g
1000 kilograms in every weight unit
| Unit | Value | Exact factor |
|---|---|---|
| ounces | 35,273.96195 oz | × 35.2739619496 |
| pounds | 2,204.622622 lb | × 2.20462262185 |
| stone | 157.4730444 st | × 0.157473044418 |
| US tons | 1.102311311 ton | × 0.00110231131092 |
| micrograms | 1,000,000,000,000 mcg | × 1,000,000,000 |
| milligrams | 1,000,000,000 mg | × 1,000,000 |
| centigrams | 100,000,000 cg | × 100,000 |
| grams | 1,000,000 g | × 1,000 |
| kilograms (as entered) | 1,000 kg | — |
| slugs | 68.52176586 slug | × 0.0685217658568 |
| tonnes | 1 t | × 0.001 |
| carats | 5,000,000 ct | × 5,000 |
| troy ounces | 32,150.74657 ozt | × 32.1507465686 |
| grains | 15,432,358.35 gr | × 15,432.3583529 |
| long tons | 0.9842065276 LT | × 0.000984206527611 |
Factors are entered by hand from NIST Handbook 44 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert kilograms to grams? The converter and the working
- 1.Take the measurement in kilograms.
- 2.Multiply by 1000 — that is how many grams fit in one kilogram.
- 3.To go back the other way, divide by 1000, or multiply by 0.001.
Worked example: 25 kilograms to grams
- Formula
- kg × 1000 = g
- Arithmetic
- 25 × 1000 = 25,000 g
- Answer
- 25 kg = 25,000 g
The factor is exact, so this figure is exact too — only the display is rounded.
Kilograms to grams conversion table
| Kilograms | Grams |
|---|---|
| 1 kg | 1,000 g |
| 2 kg | 2,000 g |
| 3 kg | 3,000 g |
| 4 kg | 4,000 g |
| 5 kg | 5,000 g |
| 6 kg | 6,000 g |
| 7 kg | 7,000 g |
| 8 kg | 8,000 g |
| 9 kg | 9,000 g |
| 10 kg | 10,000 g |
| 12 kg | 12,000 g |
| 15 kg | 15,000 g |
| 20 kg | 20,000 g |
| 25 kg | 25,000 g |
| 50 kg | 50,000 g |
| 100 kg | 100,000 g |
| 200 kg | 200,000 g |
| 300 kg | 300,000 g |
| 500 kg | 500,000 g |
| 1000 kg | 1,000,000 g |
| 2000 kg | 2,000,000 g |
| 5000 kg | 5,000,000 g |
| 10000 kg | 10,000,000 g |
What is a kilogram?
The SI base unit of mass, defined since 2019 by fixing the Planck constant rather than by a metal cylinder in Paris.
What is a gram?
One thousandth of a kilogram, and the unit nutrition labels use worldwide.
How many grams are in a kilogram?
One kilogram is 1000 grams, exactly. Going the other way, one gram is 0.001 kilograms. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every weight unit here
The whole group — 15 units with their symbols and the size of each one in kilograms — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a kilogram.
Cite this page
- APA
- Rule Calculator. (2026). Convert Kilograms to grams. Rule Calculator. https://rulecalculators.com/convert/kilogram-to-gram
- MLA
- "Convert Kilograms to grams." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/kilogram-to-gram.
- Chicago
- Rule Calculator. "Convert Kilograms to grams." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/kilogram-to-gram.
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Questions people actually ask
- How many grams are in a kilogram?
- 1000. One thousandth of a kilogram, and the unit nutrition labels use worldwide.
- How do I convert grams back to kilograms?
- Divide by 1000, or multiply by 0.001 — they are the same operation.
The values people look up
Each one is this page with the value filled in, and each answers in its own title.
Other weight conversions
Grams to kilograms — the same conversion the other way.