Convert between kilograms, pounds, ounces, grams, stones, tonnes, and US tons, every unit shown at once. Free, instant weight & mass converter for cooking, fitness, shipping, and science.
Enter a weight in any unit and see it in all the others simultaneously, milligrams, grams, kilograms, tonnes, ounces, pounds, stone, and US tons. A from/to selector with swap covers your main pair, and any unit can be copied with a single click. Everything is computed locally as you type.
Calibrating Mass Converter......
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Convert grams, kilograms, and tonnes against ounces, pounds, and stone from a single input. It's the tool for reading a recipe in grams when your scale shows ounces, converting a parcel weight for a shipping label, or logging body weight in the unit your app expects.
Pick your source unit, grams, kilograms, pounds, ounces, or stone, from the left dropdown.
Enter the number and every other unit updates live in the results grid.
Read the To field, swap the direction, or click any unit card to copy its value.
Handy anchors: 1 kg ≈ 2.205 lb, 100 g ≈ 3.53 oz, and 1 stone = 14 lb = 6.35 kg. Everything is calculated client-side and updates as you type, so batch-converting a list of weights is just a matter of changing the number.
1 kilogram = 2.20462 pounds. To convert kg to lbs, multiply by 2.205. To convert lbs to kg, divide by 2.205 (or multiply by 0.4536).
1 ounce (avoirdupois) = 28.3495 grams. To convert oz to grams, multiply by 28.35. Note: a troy ounce (used for precious metals) = 31.1035 grams.
First convert kg to lbs (multiply by 2.205). Then divide by 14 to get stones (the remainder is pounds). Example: 70 kg = 154.3 lbs = 11 stone 0.3 lbs ≈ 11 stone.
Mass is the amount of matter in an object (measured in kg or grams) and stays constant everywhere. Weight is the force of gravity acting on that mass (measured in Newtons) and varies by location. In everyday use, both terms are used interchangeably.
1 gram = 1,000 milligrams. 1 kilogram = 1,000,000 milligrams. Milligrams are used for medication dosages, nutritional supplements, and precision chemistry.
1 stone = 14 pounds = 6.35 kilograms. To convert stone to kg, multiply by 6.35. Example: 12 stone = 12 × 6.35 = 76.2 kg. Stone is commonly used for body weight in the UK and Ireland.
Multiply kilograms by 2.20462 to get pounds. So 70 kg = 154.3 lb. Enter a value to convert kg to lb and back instantly.
One stone is 14 pounds. The converter can express a weight in kg, in pounds, or in stone-and-pounds (common in the UK), for example 70 kg = 11 st 0.3 lb.
Divide grams by 28.35 to get ounces. So 100 g = 3.53 oz. The tool covers g, kg, oz, lb and more for kitchen and shipping use.
Mass is the amount of matter in an object; weight is the force gravity exerts on that mass. In everyday use on Earth the units are used interchangeably.
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