Pounds → Kilograms
Convert pounds to kilograms or kilograms to pounds.
Convert pounds to kilograms or kilograms to pounds.
Pounds and kilograms are the most common units for weight, or more precisely mass. The pound (lb) is the US customary unit, defined since 1959 as exactly 0.45359237 kilograms. The kilogram (kg) is the metric base unit used in most of the world and in science. Converting pounds to kilograms means multiplying by about 0.4536, and going from kilograms to pounds means multiplying by about 2.2046. A kilogram is a little more than twice as heavy as a pound.
Converting pounds to kg comes up in many everyday and work situations. Gym equipment, luggage allowances for international flights, medication dosing, shipping and freight rates, and body weight in medical or fitness records often use kilograms. On jobsites, equipment load ratings, lifting limits and product weights from overseas manufacturers may be listed in kg while bags of concrete, mortar and fertilizer are labeled in pounds. Rounding matters most at higher weights: dividing by 2.2 instead of 2.2046 makes 200 lb read as 90.91 kg instead of 90.72 kg.
To use this converter, type a weight into the Pounds (lb) box and the kilogram value appears as you type. The tool also converts in reverse: enter a number in the Kilograms (kg) box to see pounds. Decimals are accepted, so you can enter values like 12.5 lb. The tool uses 1 lb = 0.453592 kg and rounds results to two decimal places. For weights given in pounds and ounces, convert the ounces to a decimal first by dividing by 16, then enter the total.
Multiply pounds by 0.453592 to get kilograms. Formula: kg = lb × 0.453592. Example: 150 lb × 0.453592 = 68.04 kg.
To convert kilograms to pounds, divide by 0.453592 (or multiply by about 2.20462). Example: 23 kg × 2.20462 = 50.71 lb, a common airline checked-bag limit.
Pounds to kilograms conversion chart
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 | 0.45 |
| 2 | 0.91 |
| 5 | 2.27 |
| 10 | 4.54 |
| 20 | 9.07 |
| 25 | 11.34 |
| 50 | 22.68 |
| 80 | 36.29 |
| 100 | 45.36 |
| 150 | 68.04 |
| 200 | 90.72 |
| 250 | 113.4 |
1 lb = 0.453592 kg
1 pound = 0.4536 kg.
100 lbs ≈ 45.36 kg.
One kilogram equals about 2.2046 pounds.
50 pounds is about 22.68 kg, the weight limit for many standard airline checked bags.
An 80 lb bag weighs about 36.29 kg, and a 60 lb bag weighs about 27.22 kg.
70 kilograms is about 154.32 pounds.
Divide the ounces by 16 and add them to the pounds, then multiply by 0.453592. For example, 7 lb 8 oz = 7.5 lb × 0.453592 = 3.4 kg.
Halve the pounds and subtract 10 percent of that result. For 180 lb, half is 90 and 90 − 9 = 81 kg, close to the exact 81.65 kg.