Weight Converter: Convert Between Mass Units

Weight and mass measurements appear everywhere — cooking, shipping, fitness, science, and international trade — often in different units depending on your country. Our Weight Converter handles conversions between pounds, ounces, kilograms, grams, milligrams, tons, metric tonnes, and stones. Whether you are weighing ingredients, calculating shipping costs, or tracking fitness goals, get accurate weight conversions in seconds.

Key conversions: 1 kilogram = 2.205 pounds = 35.274 ounces. 1 pound = 16 ounces = 0.454 kg = 454 grams. 1 stone = 14 pounds (used in UK for body weight). 1 US ton = 2,000 pounds. 1 metric tonne = 1,000 kg = 2,205 pounds. The converter handles both US customary and imperial units, plus the troy ounce used for precious metals (1 troy ounce = 31.103 grams).

Use the Weight Converter for cooking and baking (grams to ounces for international recipes), shipping and postage (kg to lbs for package weight), fitness tracking (kg to lbs for body weight or plates), international trade (metric tonnes to US tons), and science education (mg to g for lab measurements). Also check our Volume Converter for capacity conversions and our Length Converter for distance measurements.