Loading…
Convert kilograms, pounds, ounces, stones and more in one step.
Convert kilograms, pounds, ounces, stones and more in one step.
Enter values above and click Calculate — results will appear here with the formula explained.
The kilogram anchors all conversions here. The pound is now defined as exactly 0.45359237 kg, and the stone — still used for body weight in Britain and Ireland — packs fourteen pounds. Everything else follows arithmetically.
Mass versus weight pedantry aside: kitchen scales, luggage limits and medical charts all measure mass, and these units interchange through fixed multiplication regardless of planet.
Everyday anchors worth memorizing: 1 kg ≈ 2.2 lb (double and add 10%), 1 oz ≈ 28 g (a slice of bread), 1 stone = 14 lb ≈ 6.35 kg, and 1 metric ton = 1,000 kg ≈ 2,205 lb. Airline limits (23 kg ≈ 50.7 lb economy, 32 kg ≈ 70.5 lb business) are the most-checked conversions in practice.
Precision traps: bathroom scales read to 0.1 kg (≈0.22 lb), so converting 72.0 kg gives 158.7 lb — reporting 158.73 implies scale precision you don't have. Kitchen work needs grams; body weight needs 0.1 kg; freight needs whole kilos. Match decimals to the measuring device, not the calculator's display.
US customary quirks: the hundredweight (100 lb, 'short' versus 112 lb British 'long'), the ton split (2,000 lb short ton US, 2,240 lb long ton UK, 1,000 kg metric tonne), and grain-based pharmacy units (grains, drams) surviving in ammunition and medicine. When a document just says 'ton', check the country before converting.
Cooking weight versus volume is the classic kitchen error: 1 cup of flour weighs ~120 g but 1 cup of sugar ~200 g — volume measures space, weight measures mass, and density bridges them per ingredient. Serious baking weighs everything; volumetric cups are approximations wearing lab coats.
Convert kilograms, pounds, ounces, stones and more in one step. Formula: result = value × (from-factor ÷ to-factor), anchored on kilograms. Example: 72 kg equals 158.73 lb, which also reads as 11 stone 4.7 lb — the same mass wearing three different labels.
The kilogram anchors all conversions here. The pound is now defined as exactly 0.45359237 kg, and the stone — still used for body weight in Britain and Ireland — packs fourteen pounds. Everything else follows arithmetically.
Mass versus weight pedantry aside: kitchen scales, luggage limits and medical charts all measure mass, and these units interchange through fixed multiplication regardless of planet.
Everyday anchors worth memorizing: 1 kg ≈ 2.2 lb (double and add 10%), 1 oz ≈ 28 g (a slice of bread), 1 stone = 14 lb ≈ 6.35 kg, and 1 metric ton = 1,000 kg ≈ 2,205 lb. Airline limits (23 kg ≈ 50.7 lb economy, 32 kg ≈ 70.5 lb business) are the most-checked conversions in practice.
Precision traps: bathroom scales read to 0.1 kg (≈0.22 lb), so converting 72.0 kg gives 158.7 lb — reporting 158.73 implies scale precision you don't have. Kitchen work needs grams; body weight needs 0.1 kg; freight needs whole kilos. Match decimals to the measuring device, not the calculator's display.
US customary quirks: the hundredweight (100 lb, 'short' versus 112 lb British 'long'), the ton split (2,000 lb short ton US, 2,240 lb long ton UK, 1,000 kg metric tonne), and grain-based pharmacy units (grains, drams) surviving in ammunition and medicine. When a document just says 'ton', check the country before converting.
Cooking weight versus volume is the classic kitchen error: 1 cup of flour weighs ~120 g but 1 cup of sugar ~200 g — volume measures space, weight measures mass, and density bridges them per ingredient. Serious baking weighs everything; volumetric cups are approximations wearing lab coats.
72 kg equals 158.73 lb, which also reads as 11 stone 4.7 lb — the same mass wearing three different labels. A 23 kg suitcase limit is 50.7 lb; packing to 24 kg risks a $100+ fee for 2.2 lb of souvenirs.
Formulas are standard public references (see our methodology). External standards are cited in the text where they apply.
Last reviewed: September 2026 · Report an error