Weight Converter
Convert weights between kilograms, pounds, grams, ounces, milligrams, tonnes, and stones. Type any value, all units update instantly. Free, no signup.
What is Weight Converter?
Weight conversion is needed across cooking, fitness, shipping, science, and international commerce. The metric system uses milligrams (mg), grams (g), kilograms (kg), and metric tonnes (t). The imperial and US systems use ounces (oz), pounds (lb), and stones (st) — where stones remain in common use for body weight in the UK and Ireland. Scientific work uses grams and kilograms exclusively.
Common conversion needs include converting body weight between kg and lb for fitness tracking apps, converting ingredient amounts between grams and ounces for international recipes, calculating shipping weights, and converting package specifications between metric and imperial. The key reference point most people memorise is that 1 kg ≈ 2.205 lb.
Enter a value in any unit and all other units update instantly. All calculations run locally in your browser. No data is sent to any server.
How to use
Frequently asked questions
1 kilogram = 2.20462 pounds. Conversely, 1 pound = 0.453592 kilograms.
1 ounce = 28.3495 grams. This is particularly useful for cooking conversions.
A stone is a unit of weight equal to 14 pounds (6.35029 kg). It is commonly used in the UK and Ireland for expressing body weight.
Yes. All conversions run in your browser. Nothing is sent to any server.