Convert weight and mass between ounces, pounds, stones, grams, kilograms and metric tonnes.
Running and walking pace, speed relationships and common everyday unit-conversion formulas.
Enter the requested values above and select Calculate. The result updates immediately on the page, so you can change one value and compare different scenarios without leaving the calculator.
Convert pounds to kilograms, ounces to grams or kilograms to pounds.
Convert weight and mass between ounces, pounds, stones, grams, kilograms and metric tonnes. It is designed for quick estimates and everyday problem solving. When a calculation affects a contract, tax filing, medical decision or other high-stakes situation, verify the result with the appropriate professional or authoritative source.
This converter uses kilograms as the common base unit. It supports ounces, pounds, stones, grams, kilograms and metric tonnes. The conversion factors include 1 pound = 0.45359237 kilograms, 1 ounce = 0.028349523125 kilograms, 1 stone = 6.35029318 kilograms and 1 metric tonne = 1,000 kilograms.
150 pounds is about 68.04 kilograms, while 70 kilograms is about 154.32 pounds. One stone equals 14 pounds. For shipping, science and international product specifications, confirm whether a source is referring to mass in kilograms or force/weight in a specific technical context.
A mass of 10 pounds equals 10 × 0.45359237 = 4.5359237 kilograms. Use pounds as the starting unit and kilograms as the destination to verify the factor.
Terminology: these everyday “weight” conversions use common mass units. A US short ton is different from a metric tonne; this tool labels the metric unit as “metric tonnes” rather than assuming all tons are equivalent.
Convert weight and mass between ounces, pounds, stones, grams, kilograms and metric tonnes.
Values are converted through kilograms as a common base unit.
Yes. ERICH Calculators is free to use and no account is required.
See how formulas, sources and limitations are handled across ERICH Calculators.