Pounds to Kilograms Converter
1 lb = 0.4536 kg. Convert pounds to kilograms instantly with this free lbs to kg calculator. Enter any weight to get the exact answer, a conversion table, and the formula in one step.
Why Convert Weight from Pounds to Kilograms?
The kilogram (kg) is the universal and most widely used unit for measuring weight around the world. It is the standard unit in the International System of Units (SI) and is used in scientific, medical, and everyday contexts globally.
If you're traveling internationally, working with metric recipes, communicating with people from metric-using countries, or dealing with international shipping, converting pounds to kilograms is essential for accurate communication and measurements.
What is a Pound?
The pound (lb) is a unit of mass used in the imperial and US customary systems of measurement. It is primarily used in the United States, United Kingdom, and a few other countries for measuring body weight, food portions, and goods.
- One pound is equal to 0.45359237 kilograms
- One pound is divided into 16 ounces (oz)
- The abbreviation "lb" comes from the Latin word "libra"
- The pound is also known as the avoirdupois pound
What is a Kilogram?
The kilogram (kg) is the base unit of mass in the International System of Units (SI). It is used worldwide for scientific measurements, trade, and everyday purposes in most countries.
- One kilogram is equal to 2.20462262185 pounds (lbs)
- One kilogram is divided into 1000 grams (g)
- The kilogram is the only SI base unit with a prefix (kilo-) in its name
Pounds to Kilograms Conversion Formula
To convert pounds to kilograms, you can use the following formula:
Here's an example calculation:
Conversion Table: From Pounds to Kilograms
Here is a quick reference table for common pound to kilogram conversions:
| Pounds (lb) | Kilograms (kg) | Kilograms and Grams (kg + g) |
|---|---|---|
| 1 lb | 0.454 kg | 0 kg 454 g |
| 2 lb | 0.907 kg | 0 kg 907 g |
| 3 lb | 1.361 kg | 1 kg 361 g |
| 4 lb | 1.814 kg | 1 kg 814 g |
| 5 lb | 2.268 kg | 2 kg 268 g |
| 6 lb | 2.722 kg | 2 kg 722 g |
| 7 lb | 3.175 kg | 3 kg 175 g |
| 8 lb | 3.629 kg | 3 kg 629 g |
| 9 lb | 4.082 kg | 4 kg 82 g |
| 10 lb | 4.536 kg | 4 kg 536 g |
| 11 lb | 4.990 kg | 4 kg 990 g |
| 12 lb | 5.443 kg | 5 kg 443 g |
| 13 lb | 5.897 kg | 5 kg 897 g |
| 14 lb | 6.350 kg | 6 kg 350 g |
| 15 lb | 6.804 kg | 6 kg 804 g |
| 16 lb | 7.257 kg | 7 kg 257 g |
| 17 lb | 7.711 kg | 7 kg 711 g |
| 18 lb | 8.165 kg | 8 kg 165 g |
| 19 lb | 8.618 kg | 8 kg 618 g |
| 20 lb | 9.072 kg | 9 kg 72 g |
| 25 lb | 11.340 kg | 11 kg 340 g |
| 30 lb | 13.608 kg | 13 kg 608 g |
| 35 lb | 15.876 kg | 15 kg 876 g |
| 40 lb | 18.144 kg | 18 kg 144 g |
| 45 lb | 20.412 kg | 20 kg 412 g |
| 50 lb | 22.680 kg | 22 kg 680 g |
| 55 lb | 24.948 kg | 24 kg 948 g |
| 60 lb | 27.216 kg | 27 kg 216 g |
| 65 lb | 29.484 kg | 29 kg 484 g |
| 70 lb | 31.751 kg | 31 kg 751 g |
| 75 lb | 34.019 kg | 34 kg 19 g |
| 80 lb | 36.287 kg | 36 kg 287 g |
| 85 lb | 38.555 kg | 38 kg 555 g |
| 90 lb | 40.823 kg | 40 kg 823 g |
| 95 lb | 43.091 kg | 43 kg 91 g |
| 100 lb | 45.359 kg | 45 kg 359 g |
| 110 lb | 49.895 kg | 49 kg 895 g |
| 120 lb | 54.431 kg | 54 kg 431 g |
| 130 lb | 58.967 kg | 58 kg 967 g |
| 140 lb | 63.503 kg | 63 kg 503 g |
| 150 lb | 68.039 kg | 68 kg 39 g |
| 160 lb | 72.575 kg | 72 kg 575 g |
| 170 lb | 77.111 kg | 77 kg 111 g |
| 180 lb | 81.647 kg | 81 kg 647 g |
| 190 lb | 86.183 kg | 86 kg 183 g |
| 200 lb | 90.718 kg | 90 kg 718 g |
| 250 lb | 113.398 kg | 113 kg 398 g |
| 300 lb | 136.078 kg | 136 kg 78 g |
| 400 lb | 181.437 kg | 181 kg 437 g |
| 500 lb | 226.796 kg | 226 kg 796 g |
| 750 lb | 340.194 kg | 340 kg 194 g |
| 1000 lb | 453.592 kg | 453 kg 592 g |
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Convert pounds to kilograms instantly. To do it by hand, multiply the pounds by 0.453592 (or divide by 2.20462) — so 150 lb = 68.04 kg. The pound is the imperial/US unit of weight; the kilogram is the metric unit, defined so that 1 lb = 0.45359237 kg exactly.
How do I convert lbs to kg?
- Enter the weight in pounds.
- The result in kilograms appears automatically.
- Use it for body weight, shipping, or recipes.
What is the lbs to kg formula?
kilograms = pounds × 0.453592
Quick estimate: halve the pounds and subtract about 10% (100 lb → 45 kg).
Quick reference
| Pounds | Kilograms |
|---|---|
| 1 lb | 0.45 kg |
| 10 lb | 4.54 kg |
| 50 lb | 22.68 kg |
| 100 lb | 45.36 kg |
| 200 lb | 90.72 kg |
Frequently asked questions
How many kg is 1 pound?
One pound equals about 0.454 kilograms.
How do I convert my body weight from lbs to kg?
Multiply your weight in pounds by 0.453592. For example, 160 lb is about 72.6 kg.
Related tools & guides
- Kilograms to Pounds Converter (reverse)
- Weight Converter (all units)
- Kg ↔ Lbs: formula, chart & guide