Mass and Weight Converter
Convert weight and mass units with the factor behind each answer. The pound is defined exactly as 0.45359237 kg.
1 kg = 2.204622622 lb
Common conversions
- 1 kg = 2.204622622 lb
- 1 lb = 0.45359237 kg
- 1 g = 0.03527396195 oz
- 1 oz = 28.34952313 g
- 1 t = 1,000 kg
- 1 tn = 0.90718474 t
Tonne and short ton
The metric tonne (t) is 1,000 kg. The US short ton (tn) is 2,000 lb, about 907.18 kg. A long ton of 2,240 lb is used in some shipping contracts and is not listed here.
Mass is not weight
Kilograms and pounds measure mass. Weight is a force, in newtons or pounds-force. The force converter handles that.
Unit factors
Every unit in terms of the base unit shown. To convert, multiply by the factor of the unit you have and divide by the factor of the unit you want.
| Unit | Equals | What it is |
|---|---|---|
| µg | 1 × 10⁻⁹ kg | Microgram. |
| mg | 1 × 10⁻⁶ kg | Milligram. |
| g | 0.001 kg | Gram, a thousandth of a kilogram. |
| kg | 1 kg | Kilogram, the SI base unit of mass. |
| t | 1,000 kg | Metric tonne, 1,000 kg. |
| oz | 0.02834952313 kg | Avoirdupois ounce, 1/16 lb. |
| lb | 0.45359237 kg | Avoirdupois pound, exactly 0.45359237 kg. |
| tn | 907.18474 kg | US short ton, 2,000 lb. Not the same as the metric tonne. |
Conversion pages
Frequently asked questions
What is the formula to convert kg to lb?
lb = kg × 2.204622622. For example, 25 kg is 55.11556555 lb.
How do I convert lb back to kg?
kg = lb × 0.45359237. The Swap button above reverses the direction for any pair of units.
Related
Conversion CentreElectrical Unit ConverterBattery Capacity ConverterPower ConverterEnergy ConverterVoltage ConverterCurrent ConverterResistance ConverterFrequency ConverterCapacitance ConverterInductance ConverterAngle ConverterPercent and PPM ConverterLength ConverterArea ConverterVolume ConverterForce and Torque ConverterPressure ConverterTemperature ConverterFlow Rate ConverterMagnetic Flux Density ConverterIlluminance and Luminance ConverterDensity ConverterRotational Speed ConverterThermal Conductivity ConverterTemperature Difference ConverterSpecific Heat Converter