To convert kg to lbs, multiply kilograms by 2.20462 — one pound is defined as exactly 0.45359237 kilograms, so a kilogram is just over 2.2 pounds. This weight converter handles kilograms, grams, milligrams, metric tons, ounces, pounds, and stones, covering body weight, cooking, shipping, and science conversions in one tool.
Enter a value, pick the units, and you get the converted result, the exact multiplier used, and a table showing the same weight in every supported unit. Stones are included for UK body weight — one stone equals 14 pounds, so someone who weighs 76 kg weighs 167.6 lb or 11 st 13.6 lb.
How Weight Conversion Works
Every unit here is a fixed multiple of the kilogram, so conversion is one multiplication:
converted = value × (kg per From unit) ÷ (kg per To unit)
The exact definitions, fixed by the 1959 international pound agreement:
- 1 pound (lb) = 453.59237 g = 0.45359237 kg exactly
- 1 ounce (oz) = 1/16 lb = 28.349523125 g exactly
- 1 stone (st) = 14 lb = 6.35029318 kg exactly
- 1 metric ton (t) = 1,000 kg exactly
So kg to lbs is kg ÷ 0.45359237 = kg × 2.20462, and grams to pounds is grams ÷ 453.592. Strictly speaking these units measure mass; “weight” is the everyday term.
Common Conversions Cheat Sheet
The multipliers for the conversions people look up most:
- kg to lbs: × 2.20462 (70 kg = 154.3 lb)
- lbs to kg: × 0.453592 (150 lb = 68.04 kg)
- Grams to pounds: ÷ 453.592 (500 g = 1.1023 lb)
- Grams to ounces: ÷ 28.3495 (100 g = 3.5274 oz)
- kg to stones: ÷ 6.35029 (80 kg = 12.6 st = 12 st 8.4 lb)
- Ounces to grams: × 28.3495
Quick mental math: to go from kg to lbs, double the number and add 10% — 80 kg → 160 + 16 = 176 lb (exact answer: 176.37 lb).
Worked Examples: 70 kg to Lbs, 500 g to Pounds
Convert 70 kg to pounds. Multiply by 2.20462: 70 × 2.20462 = 154.324 lb. For UK-style body weight, divide 154.324 by 14 to get 11.02 stones — about 11 st 0.3 lb.
Convert 500 grams to pounds. Divide by 453.59237: 500 ÷ 453.59237 = 1.10231 lb, or about 1 lb 1.6 oz. That is why a 500 g package is often labeled 1.1 lb.
Going the other way, convert 180 lb to kg: 180 × 0.45359237 = 81.6466 kg.
Frequently Asked Questions
How many pounds are in a kilogram?
One kilogram equals 2.20462 pounds. The relationship is exact in reverse: one pound is defined as exactly 0.45359237 kg. To convert kg to lbs, multiply by 2.20462 — so 60 kg = 132.3 lb, 70 kg = 154.3 lb, and 100 kg = 220.5 lb.
How many grams are in a pound?
There are exactly 453.59237 grams in one pound — commonly rounded to 453.6 g or 454 g. To convert grams to pounds, divide by 453.592: for example, 1,000 g (1 kg) = 2.2046 lb and 250 g = 0.5512 lb, or about half a pound plus 8%.
What is a stone in weight?
A stone is a British unit equal to exactly 14 pounds or 6.35029 kilograms, still widely used in the UK and Ireland for body weight. Weights are usually quoted as stones plus pounds: 11 st 4 lb means 158 lb, which is about 71.7 kg.
How many ounces are in a pound?
There are 16 ounces in one pound (avoirdupois), and each ounce is exactly 28.349523125 grams. Note that this weight ounce differs from the fluid ounce, which measures volume — 8 fl oz of water weighs roughly 8.35 oz, and other ingredients differ more.
What is the difference between mass and weight?
Mass is the amount of matter in an object; weight is the force gravity exerts on that mass. Kilograms, grams, and pounds are technically mass units, and everyday “weight” conversions are really mass conversions. Your mass is the same on the Moon, but your weight there is about one-sixth of Earth’s.