Weight Converter
Convert between kilograms, pounds, ounces, grams and more
Convert Weight
Kilogram (kg) -
Gram (g) -
Milligram (mg) -
Pound (lb) -
Ounce (oz) -
Metric Ton (t) -
Quick Reference
1 kg = 1000 g = 2.205 lb
1 lb = 453.6 g = 16 oz
1 oz = 28.35 g = 0.0625 lb
1 t = 1000 kg = 2205 lb
Weight and Mass Units
Weight is one of the most commonly used measurements in daily life, from cooking to international trade. There are two main systems: metric (used in most of the world) and imperial (used in the US).
Metric System
The metric system uses the kilogram as the base unit, with prefixes indicating multiples and submultiples:
- Metric Ton (t): 1,000 kg - heavy cargo and transport
- Kilogram (kg): SI base unit
- Gram (g): 1/1,000 kg - recipes and ingredients
- Milligram (mg): 1/1,000,000 kg - medications
Imperial System
Used primarily in the United States and United Kingdom:
- Pound (lb): ~453.6 grams - body weight in US
- Ounce (oz): 1/16 of a pound - food and jewelry
Important Conversions
1 pound = 0.453592 kg (exact)
1 ounce = 28.3495 g (exact)