Weight Converter
Weight conversion workspace
Enter a decimal, fraction or quick calculation — for example 12.5, 3/8 or (12*4)+6.5.
Batch conversionconvert up to 100 values at once
No values yet.
Compare all weight units
One input, every supported equivalent. Select any row as the main target.
| Unit | Equivalent | Target action |
|---|---|---|
| Kilograms kg | 1 | SourceSource |
| Pounds lb | 2.2 | TargetSelected |
| Grams g | 1,000 | |
| Metric Tonnes t | 1E-3 | |
| Ounces oz | 35.27 | |
| Stone (14 lb) st | 0.16 |
Weight is commonly expressed with mass units in everyday conversions, including the 14-pound British stone.
Sourced factorsFormula
value in target = value × source factor / target factor
Calculations use the central unit catalog and preserve precision until the result is formatted.
Common conversions
| Input | From | To | Result |
|---|---|---|---|
| 1 | Kilograms | Pounds | 2.20462262185 |
Common weight conversions
Curated references with worked examples, formulas and the full interactive converter.
Frequently asked questions
How many pounds are in one stone?
One British stone equals 14 avoirdupois pounds exactly.
Are the results rounded?
The calculation retains full JavaScript number precision; the precision control only formats the displayed result.
Accuracy & transparency
Sources & methodology
Calculations keep full numeric precision until display formatting. These references describe the definitions, variants or factors used; links do not imply affiliation.
SI definitions and published coefficients for selected non-SI units.
Reference factors and named variants for commonly used units, including US liquid cooking measures and British stone.
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