Choose a conversion
- Pounds to KilogramsExact lb-to-kg conversion with formula and reference table.
- Kilograms to PoundsMetric kilograms converted to decimal pounds.
- Pounds to OuncesConvert using the exact 16 ounces per pound relationship.
- Ounces to PoundsTurn total ounces into decimal pounds.
- Pounds to StoneGet decimal stone and stone-plus-pounds results.
- Stone to PoundsConvert whole or decimal stone to total pounds.
- Pounds to GramsMove directly from pounds to the smaller metric unit.
- Grams to PoundsConvert food, product, or parcel weights into pounds.
- Pounds and Ounces to KilogramsCombine two imperial fields into one kilogram result.
Reference resources
- Pounds to Kilograms ChartSearch every whole-pound conversion from 1 to 300 lb.
- Kilograms to Pounds ChartSearch every whole-kilogram conversion from 1 to 200 kg.
- Calculation MethodologyReview exact definitions, input parsing, rounding, and test coverage.
Unit definitions used
The calculators share a single set of constants: one pound is exactly 0.45359237 kg, 16 oz, and 453.59237 g; one stone is exactly 14 lb. Keeping these definitions central prevents one tool from drifting away from another.
For values written in two parts, use the pounds and ounces converter instead of turning an ounce count into a decimal by eye.