Convert mass measurements between metric and common imperial units.
Result
1 kg = 2.2046226218 lb
1 kg in every supported unit.
| Unit | Value |
|---|---|
| Milligrammg | 1,000,000 |
| Gramg | 1,000 |
| Kilogramkg | 1 |
| Metric tonnet | 0.001 |
| Ounceoz | 35.2739619496 |
| Poundlb | 2.2046226218 |
| Stonest | 0.1574730444 |
Complete tool guide
The Weight Converter is a free online conversion tool for translating a weight value from one measurement unit into another. Convert mass measurements between metric and common imperial units. Enter a number once to see the selected result and a comparison table covering every supported unit.
Unit conversion is useful whenever a specification, recipe, report, product label, instrument, dataset, or instruction uses a measurement system different from the one you need. The converter applies the defined mathematical relationship consistently and avoids the common mistakes caused by moving decimal points or relying on a remembered approximate factor.
Enter the source number exactly as supplied, including any required decimal precision.
Choose the original unit in the From field and verify its symbol; similarly named units can represent different quantities.
Choose the required destination unit in the To field and read the live result. Use Swap when you need the reverse relationship.
Review the all-conversions table, then copy the labeled result and retain the source value for traceability.
Values are normalized through kilograms using defined factors such as 1 pound = 0.45359237 kg and 1 ounce = 28.349523125 g.
The calculations use kilograms as the shared base. “Weight” is used here as the familiar everyday label for mass.
This converter supports Milligram (mg), Gram (g), Kilogram (kg), Metric tonne (t), Ounce (oz), Pound (lb), Stone (st).
The result represents the same mass in another unit. In everyday language this is called weight, although physics distinguishes mass from the force of weight.
Do not use ordinary mass conversion for force units such as newtons or pound-force. Local trade and historical units may also differ from the international units listed here.
Displayed values are rounded for readability. A converted number cannot be more accurate than the source measurement, so do not treat extra decimal places as additional instrument precision.
Convert mass measurements between metric and common imperial units. Supported choices are Milligram (mg), Gram (g), Kilogram (kg), Metric tonne (t), Ounce (oz), Pound (lb), Stone (st). Select the unit attached to the source value and the unit required for the result.
The calculator uses the factors and formulas described above and retains precision internally. The practical accuracy still depends on the source measurement, correct unit selection, displayed rounding, and whether the context uses the same unit definition.
Check for a rounded factor, a different regional unit, an incorrect source unit, or a distinction such as decimal versus binary, US versus imperial, gauge versus absolute, or mass versus volume. Compare the complete unit name and method.
Only some metric-prefix conversions work that way. Imperial relationships, offset temperature scales, reciprocal fuel economy, area, volume, and many cross-system conversions require specific formulas. Use the defined converter rather than assuming a power of ten.
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