Weight Converter
Convert weight between kilograms, pounds, ounces, stone and tonnes instantly and for free with this simple browser-based weight converter.
Convert weight
Result
0.001
1 Milligrams (mg) = 0.001 Grams (g)
All units
- Milligrams (mg)
- 1
- Grams (g)
- 0.001
- Kilograms (kg)
- 1.0000e-6
- Tonnes (t)
- 1.0000e-9
- Ounces (oz)
- 3.5274e-5
- Pounds (lb)
- 2.2046e-6
- Stone (st)
- 1.5747e-7
- US tons
- 1.1023e-9
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Enter the amount you want to convert.
- Choose the unit you have (From) and the unit you want (To).
- Read the result instantly — every other unit is listed too.
How it works
Converts mass between kilograms, grams, pounds (×2.205), ounces, tonnes and stone.
Worked example
1 kg. = 1,000 g ≈ 2.205 lb.
Common mistakes
- Confusing mass (kg) with weight (force) — everyday use treats them as the same.
- Mixing fluid ounces (volume) with ounces (weight).
Frequently asked questions
How many grams are in a pound?
About 453.59 g in one pound (lb).
Is a kilogram a measure of weight?
Strictly it's mass, but in everyday use 'weight' in kilograms is fine on Earth.
How many pounds are in a kilogram?
About 2.205 lb. Going the other way, 1 lb ≈ 0.4536 kg.
How accurate are the conversions?
They use standard conversion factors at full device precision, so they're reliable for everyday and professional use.
Does it work offline and stay private?
Yes — the conversion runs entirely in your browser, with no sign-up and nothing sent to a server.
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Cite this tool
Zerdly. (2026). Weight Converter. Retrieved from https://www.zerdly.com/tools/weight-converter/
Mass & weight conversion table
How much one of each unit equals in the others — read each row as “1 [row unit] = …”. All values are exact conversions.
| 1 unit = | g | kg | t | lb | oz |
|---|---|---|---|---|---|
| 1 g | 1 | 0.001 | 0.000001 | 0.002205 | 0.035274 |
| 1 kg | 1,000 | 1 | 0.001 | 2.204623 | 35.273962 |
| 1 t | 1,000,000 | 1,000 | 1 | 2,204.622622 | 35,273.961981 |
| 1 lb | 453.59237 | 0.453592 | 0.000454 | 1 | 16 |
| 1 oz | 28.349523 | 0.02835 | 0.000028 | 0.0625 | 1 |
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.