Tables showing the SI equivalents of metric units and some older units commonly used such as Ounce (oz), Pound (lb), Ton, Short Ton (tn), Metric Tonne (t), Unified Mass Unit (u), Kilogram (kg), Gram (g) and Milligram (mg)
Units of Mass Table
| Unit | SI equivalent | Inverse |
|---|---|---|
| 1 oz (ounce) | equals 2.835 x 10-2 kg | 1 kg = 35.27 oz |
| 1 lb (pound) | equals 0.4536 kg | 1 kg = 2.205 lb |
| 1 ton (= 2240 lb) | equals 1016 kg | 1 kg = 0.9842 x 10-3 ton |
| 1 short ton (=2000 lb) | equals 907 kg | 1 kg = 1.102 x 10-3 short tons |
| 1 t (tonne) | equals 1000 kg | 1 kg = 10-3 t |
| 1 u (unified mass unit) | equals 1.660 x 10-27 kg | 1 kg = 6.024 x 1026 u |
The Royal Society (1975) Quantities, Units and Symbols, London, The Royal Society
Mass Table
| Unit | SI symbol | Conversion |
|---|---|---|
| tonne | t | 1 t = 1000 kg |
| kilogram | kg | 1 kg = 1000 g |
| gram | g | 1 g = 1000 mg |
| milligram | mg |