Pounds to Kilograms (lbs to kg)

Convert pounds to kilograms for weights listed in US or UK units — body weight, dumbbells, recipes or product specs.

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From

Unit

1 lb = 0.45359237 kg

Factor: 1 lb = 0.45359237 kg

Conversion table: Pound (lb) → Kilogram (kg)
lb	kg
1 lb	0.453592 kg
2 lb	0.907185 kg
3 lb	1.36078 kg
4 lb	1.81437 kg
5 lb	2.26796 kg
6 lb	2.72155 kg
7 lb	3.17515 kg
8 lb	3.62874 kg
9 lb	4.08233 kg
10 lb	4.53592 kg
15 lb	6.80389 kg
20 lb	9.07185 kg
25 lb	11.3398 kg
30 lb	13.6078 kg
40 lb	18.1437 kg
50 lb	22.6796 kg
60 lb	27.2155 kg
70 lb	31.7515 kg
80 lb	36.2874 kg
90 lb	40.8233 kg
100 lb	45.3592 kg
110 lb	49.8952 kg
120 lb	54.4311 kg
130 lb	58.967 kg
140 lb	63.5029 kg
150 lb	68.0389 kg
160 lb	72.5748 kg
170 lb	77.1107 kg
180 lb	81.6466 kg
190 lb	86.1826 kg
200 lb	90.7185 kg
250 lb	113.398 kg
300 lb	136.078 kg

How to use

Enter the weight in pounds.
Read the value in kilograms.
Check the table for common values.

How it works

Exact factor: 1 lb = 0.45359237 kg, fixed by the 1959 international agreement. Quick estimate: halve the pounds and take off 10 % of the result (150 lb → 75 → 67.5 kg, exact 68.0 kg).

Body weight in the US is often given in pounds, and in the UK in stones and pounds: 1 stone = 14 lb = 6.35 kg, so 11 st 4 lb is 158 lb, which is 71.7 kg.

Examples

Body weight: 150 lb = 68.04 kg.
Dumbbell: 25 lb = 11.34 kg.

Common uses

US body weights and fitness
Product specifications
Recipes

Privacy & security

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Frequently asked questions

How many kg is 1 lb?

Exactly 0.45359237 kg.

How do I convert stones and pounds?

Multiply stones by 14, add the pounds, then convert: 11 st 4 lb = 158 lb = 71.67 kg.

How many kg is 150 lbs?

150 lb = 68.04 kg.

How many kg is 180 lbs?

180 lb = 81.65 kg.

How many kg is 200 lbs?

200 lb = 90.72 kg.

Last updated: September 18, 2026