---
title: "Pounds to Kilograms — lb to kg converter"
description: "1 pound = 0.45359 kilograms. Convert pounds to kilograms with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/lbs-to-kg/
site: "At One Place"
---

# Pounds to kilograms

**1 pound in kilograms: 1 lb = 0.45359 kg**

kg = lb × 0.45359237

To convert pounds to kilograms, multiply by 0.45359237. The table below gives the values people look up most often, and the converter works for any number.

## Pounds to kilograms table

*Common pound values converted to kilograms.*

| Pounds | Kilograms |
| --- | --- |
| 1 lb | 0.45359 |
| 2 lb | 0.90718 |
| 3 lb | 1.360777 |
| 4 lb | 1.814369 |
| 5 lb | 2.267962 |
| 10 lb | 4.535924 |
| 15 lb | 6.803886 |
| 20 lb | 9.071847 |
| 25 lb | 11.33981 |
| 30 lb | 13.60777 |
| 40 lb | 18.14369 |
| 50 lb | 22.67962 |
| 75 lb | 34.01943 |
| 100 lb | 45.35924 |
| 250 lb | 113.3981 |
| 500 lb | 226.7962 |
| 1,000 lb | 453.5924 |

## How the conversion works

The relationship is kg = lb × 0.45359237. Both units measure mass, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

## Common questions

### How many kilograms are in one pound?

One pound equals 0.45359 kilograms. kg = lb × 0.45359237.

### How do you convert pounds to kilograms?

Use kg = lb × 0.45359237. So 10 lb is 4.535924 kg.

### How many pounds are in one kilogram?

One kilogram equals 2.204623 pounds, which is the reverse of the conversion above.

## Related pages

- [Kilograms to Pounds](https://atoneplace.net/convert/kg-to-lbs/)
- [Pounds to Grams](https://atoneplace.net/convert/lbs-to-grams/)
- [Pounds to Milligrams](https://atoneplace.net/convert/lbs-to-mg/)
- [Pounds to Tonnes](https://atoneplace.net/convert/lbs-to-tonnes/)
- [Pounds to Ounces](https://atoneplace.net/convert/lbs-to-oz/)
- [Pounds to Stone](https://atoneplace.net/convert/lbs-to-stone/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)