Convert between kilograms, pounds, stone, grams and ounces instantly.
This free weight converter changes any value between kilograms, pounds, stone, grams and ounces using standard conversion factors. Pick the unit you have and the unit you want, and the result updates instantly, with the equivalent in kilograms, pounds, stone and grams shown below.
Conversions use exact international factors (1 lb = 0.45359237 kg) and are rounded for display.
Australia measures body weight in kilograms, but you will still run into pounds on American websites and gym equipment, and stones in British publications and older family records. This converter switches between kilograms, pounds and stones instantly, which saves you juggling conversion factors in your head.
Some quick reference points: 70 kg is about 154 pounds or 11 stone, and 100 kg is roughly 220 pounds. One stone equals 14 pounds, which is why British weights are often quoted as something like eleven stone four.
Common uses include converting a weight from a US fitness program into kilograms, understanding a birth weight quoted in pounds and ounces, checking luggage allowances quoted in different units, and comparing gym lifting numbers with American training plans. The tool uses the exact factor of 1 kg = 2.20462 lb.