Converting kilograms to pounds is one of the most common unit conversions — whether you're checking your weight, following a recipe, or shipping a package. This guide explains everything you need to know.
The Formula
The conversion between kilograms and pounds is straightforward:
Or to convert pounds back to kilograms:
Quick Reference Table
| Kilograms (kg) | Pounds (lb) |
|---|---|
| 1 kg | 2.205 lb |
| 5 kg | 11.023 lb |
| 10 kg | 22.046 lb |
| 50 kg | 110.231 lb |
| 70 kg | 154.324 lb |
| 80 kg | 176.370 lb |
| 100 kg | 220.462 lb |
Common Examples
Body Weight
Body weight is one of the most common reasons to convert kg to lbs. If you weigh 70 kg, that's approximately 154.3 pounds. A person weighing 80 kg is about 176.4 pounds.
Cooking & Recipes
American recipes often list ingredients in pounds and ounces, while most of the world uses kilograms and grams. 1 kg of flour equals about 2.2 lbs.
Gym & Fitness
Gym equipment in the US is often labelled in pounds, while equipment in most other countries uses kilograms. 100 kg barbell = approximately 220 lbs.
Mental Math Shortcut
For a quick estimate, multiply kilograms by 2.2 (instead of the exact 2.20462). This gives you a result accurate to within 0.3%:
- 50 kg × 2.2 = 110 lbs (exact: 110.23 lbs)
- 75 kg × 2.2 = 165 lbs (exact: 165.35 lbs)
- 90 kg × 2.2 = 198 lbs (exact: 198.42 lbs)
Why are there two different units?
The kilogram is the standard unit of mass in the metric system, used by most countries worldwide. The pound is part of the imperial system, still used primarily in the United States, and to some extent in the UK and Canada.
One kilogram was originally defined as the mass of one litre of water. Today it is defined by the Planck constant, making it one of the most precisely defined units in science.