Weight & MassConversion Formulas & Examples
Kilograms → Pounds
lb = kg × 2.20462Example: 70 kg × 2.20462 = 154.32 lb
Pounds → Kilograms
kg = lb ÷ 2.20462Example: 150 lb ÷ 2.20462 = 68.04 kg
Grams → Ounces
oz = g ÷ 28.3495Example: 100 g ÷ 28.3495 = 3.53 oz
Ounces → Grams
g = oz × 28.3495Example: 8 oz × 28.3495 = 226.80 g
Stone → Kilograms
kg = st × 6.35029Example: 11 st × 6.35029 = 69.85 kg
Kilograms → Stone
st = kg ÷ 6.35029Example: 70 kg ÷ 6.35029 = 11.02 st
Weight & Mass Reference Table
| Common Reference | Metric Mass | Imperial / US Customary | Kilogram Equivalent |
|---|---|---|---|
| 1 Gram (Paperclip / US Dollar Bill) | 1 g (1,000 mg) | 0.03527 oz | 0.001 kg |
| 1 Avoirdupois Ounce | 28.35 g | 1 oz (1/16 lb) | 0.02835 kg |
| 100 Grams (Cooking Portion) | 100 g | 3.527 oz (0.220 lb) | 0.1 kg |
| 1 Avoirdupois Pound | 453.59 g | 1 lb (16 oz) | 0.45359 kg |
| 1 Kilogram (SI Base Unit) | 1 kg (1,000 g) | 2.20462 lb (35.274 oz) | 1 kg |
| 1 British Imperial Stone | 6.3503 kg | 1 st (14 lb) | 6.3503 kg |
| Standard Checked Airline Baggage | 23 kg | 50.71 lb (3.62 st) | 23 kg |
| 100 Pounds | 45.36 kg | 100 lb (7.14 st) | 45.359 kg |
| 1 Metric Ton (Tonne) | 1 t (1,000 kg) | 2,204.62 lb | 1,000 kg |
Frequently Asked Questions
Q.What is the official international base unit of mass?
The kilogram (kg) is the base unit of mass in the International System of Units (SI), equal to 1,000 grams.
Q.How is the pound (lb) legally defined in relation to the kilogram?
Under the 1959 International Yard and Pound Agreement, one avoirdupois pound is defined as exactly 0.45359237 kilograms (so 1 kg ≈ 2.20462262 lbs).
Q.How many pounds and kilograms make up one stone?
One stone (st) equals 14 avoirdupois pounds, which converts to 6.35029318 kilograms.
Q.What is the difference between an avoirdupois ounce and a troy ounce?
A standard avoirdupois ounce (1/16 of a pound) weighs 28.3495 grams, whereas a troy ounce used for precious metals weighs 31.1035 grams.