How to convert pounds to kilograms
- Check the units. From is set to Pound and To is set to Kilogram when this page opens.
- Type the pounds in Value. Whole numbers and decimals both work, such as 165 or 12.5.
- Read the Result. It updates as you type, and the formula used is printed underneath.
- Copy the line if you need to paste it somewhere, for example "165 lb = 74.84274105 kg".
- Scroll to the quick table for ready answers from 1 lb to 250 lb.
Features
- Exact definition. Uses 0.45359237 kg per pound with no rounded shortcut.
- Live result that changes with every digit you type.
- Formula on screen, so you can show your working or check homework.
- Quick table of round pound values and their kilograms.
- More weight units in the same lists: ounce, stone, gram, metric ton, tola and carat.
- Private. The number you type stays in your browser.
The pounds to kilograms formula
Multiply the pounds by 0.45359237:
kg = lb × 0.45359237
Two worked examples: 120 lb × 0.45359237 = 54.43 kg, and 45 lb × 0.45359237 = 20.41 kg. Going the long way round, dividing by 2.2046 gives the same result to four figures, which is handy on a basic calculator.
Common weights in pounds and kilograms
- 1 lb = 0.45 kg
- 5 lb = 2.27 kg
- 10 lb = 4.54 kg
- 50 lb = 22.68 kg
- 100 lb = 45.36 kg
- 154 lb = 69.85 kg
- 200 lb = 90.72 kg
- 250 lb = 113.40 kg
- 315 lb = 142.88 kg
Where pounds turn up
Bathroom scales and health advice. Scales sold in the United States show pounds, and so do most American diet and fitness articles. If a plan talks about losing 10 lb, that is 4.5 kg. To see whether a weight suits your height, put the kilograms into the BMI calculator.
Gym equipment. Dumbbells and plates marked in pounds are common. A 45 lb plate weighs 20.41 kg, a pair of 25 lb dumbbells is 11.34 kg each, and a 135 lb bench press is 61.23 kg on the bar.
Shipping and baggage. Couriers and US airlines quote limits in pounds. A 50 lb checked bag is 22.68 kg and a 70 lb parcel is 31.75 kg, so check which unit your airline uses before you pack to the limit.
Recipes and groceries. A pound of flour, butter or meat is roughly 454 g. Half a pound is about 227 g and a quarter pound about 113 g.
Why use Fileora's lbs to kg converter
There is nothing to set up: the page opens on the right units and gives the answer as you type. The conversion uses the legal definition of the pound, so it matches official tables, and it works the same on a phone as on a computer. No account is needed and nothing you enter is sent anywhere.
For the opposite direction, see the kg to lbs converter. Heights in inches go through the inches to cm converter, and every other category lives in the full unit converter.