Weight Converter — Mass Measurement Systems Explained
Weight (more precisely, mass) is measured using two major systems: the metric system and the imperial/US customary system. Our weight converter supports all major units from both systems, making it perfect for cooking, shipping, fitness, and scientific work.
Metric Weight Units
- 1 metric ton (tonne) = 1,000 kilograms
- 1 kilogram (kg) = 1,000 grams
- 1 gram (g) = 1,000 milligrams
- 1 milligram (mg) = 1,000 micrograms
Imperial / US Customary Weight Units
- 1 US ton (short ton) = 2,000 pounds
- 1 UK ton (long ton) = 2,240 pounds
- 1 stone (UK) = 14 pounds
- 1 pound (lb) = 16 ounces = 453.592 grams
- 1 ounce (oz) = 28.3495 grams
Quick Reference Conversions
- 1 kg = 2.2046 lbs
- 1 lb = 0.4536 kg
- 1 oz = 28.35 g
- 1 stone = 6.35 kg
Weight in Everyday Life
- Cooking & Baking: US recipes use cups and ounces; European recipes use grams. Our converter bridges the gap.
- Body Weight: Some countries use kilograms (India, Europe), others use pounds (USA) or stones (UK).
- Shipping & Cargo: Courier services may use kg or lbs. Overweight luggage fees depend on knowing the exact conversion.
- Medicine & Pharmacy: Drug dosages are often calculated per kilogram of body weight.