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Weight & Mass Converter
Convert kilograms, grams, pounds, ounces, tons and stone instantly — no button to press.
Why do the pound and ounce still refuse to die?
The kilogram is the SI base unit of mass and the standard almost everywhere for science, trade and everyday use. The pound and ounce persist mainly in the US — on nutrition labels, in recipes, at the gym, and on the bathroom scale — while the stone is still the everyday unit for a person's body weight in the UK and Ireland. Metric tons (1000 kg) and US short tons (2000 lb) look similar but aren't — a US ton is about 9.3% lighter than a metric ton, which matters for shipping weights and freight quotes.
This converter handles all 8 units above, so whether you're converting a recipe's ounces to grams, a shipment's tons, or your own weight between kilograms and pounds, just type a number and pick the two units — the table below shows every other unit's equivalent at the same time.
Frequently asked questions
How many pounds is one kilogram?
One kilogram equals about 2.20462 pounds. Multiply kilograms by 2.20462 to get pounds.
What is the difference between a metric ton and a US ton?
A metric ton equals 1000 kg (about 2204.6 lb), while a US short ton equals 2000 lb (about 907.18 kg) — the metric ton is roughly 10% heavier.
How many grams is one ounce?
One ounce equals about 28.35 grams, so one pound (16 ounces) equals about 453.6 grams.
How is a stone used to measure body weight?
In the UK and Ireland, body weight is commonly given in stone and pounds (1 stone = 14 lb). For example, 11 stone equals 154 pounds, or about 69.9 kilograms.