How do I convert pounds to kilograms?

Multiply the pound value by 0.453592. So x lb × 0.453592 = the equivalent in kg.

What is 5 pounds in kilograms?

5 pounds equals 2.26796 kilograms.

What is 10 pounds in kilograms?

10 pounds equals 4.53592 kilograms.

What is 100 pounds in kilograms?

100 pounds equals 45.3592 kilograms.

How do I convert back from kilograms to pounds?

Multiply the kilogram value by 2.20462. For example, 1 kg = 2.20462 lb.

Is the pound bigger than the kilogram?

No. 1 pound is smaller than 1 kilogram. It takes 2.20462 pounds to equal 1 kilogram.

Are these conversion factors exact?

Yes. Since the 1959 international yard and pound agreement, imperial/US units are defined exactly in terms of metric units, so the factor used here (0.453592) is exact within IEEE 754 double precision.

Pounds to Kilograms Converter

1 lb = 0.453592 kg

1 pound equals 0.453592 kilograms. To convert pounds to kilograms, multiply the pound value by 0.453592. For quick reference: 1 lb = 0.453592 kg, 5 lb = 2.26796 kg, 10 lb = 4.53592 kg, 100 lb = 45.3592 kg.

From

0.453592

FormulaKilograms = Pounds × 0.453592

Quick

How to convert pounds to kilograms

Take your value
Start with your value in pounds.
Multiply by 0.453592
Multiply the pound value by 0.453592. This is the exact conversion factor from pounds to kilograms.
Read the result
The product is your value in kilograms. For example, 5 lb × 0.453592 = 2.26796 kg.

Conversion formula

The exact factor from pounds to kilograms is 0.453592.

Kilograms = Pounds × 0.453592

Pounds to Kilograms conversion table

Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.

Conversion table from pounds to kilograms
Pounds (lb)	Kilograms (kg)
0.1 lb	0.045359 kg
0.25 lb	0.1134 kg
0.5 lb	0.2268 kg
1 lb	0.45359 kg
1.5 lb	0.68039 kg
2 lb	0.90718 kg
2.5 lb	1.134 kg
3 lb	1.3608 kg
4 lb	1.8144 kg
5 lb	2.268 kg
6 lb	2.7216 kg
7 lb	3.1751 kg
8 lb	3.6287 kg
9 lb	4.0823 kg
10 lb	4.5359 kg
12 lb	5.4431 kg
15 lb	6.8039 kg
18 lb	8.1647 kg
20 lb	9.0718 kg
25 lb	11.34 kg
30 lb	13.608 kg
35 lb	15.876 kg
40 lb	18.144 kg
45 lb	20.412 kg
50 lb	22.68 kg
60 lb	27.216 kg
70 lb	31.751 kg
75 lb	34.019 kg
80 lb	36.287 kg
90 lb	40.823 kg
100 lb	45.359 kg
120 lb	54.431 kg
125 lb	56.699 kg
150 lb	68.039 kg
175 lb	79.379 kg
180 lb	81.647 kg
200 lb	90.718 kg
225 lb	102.06 kg
250 lb	113.4 kg
275 lb	124.74 kg
300 lb	136.08 kg
350 lb	158.76 kg
400 lb	181.44 kg
450 lb	204.12 kg
500 lb	226.8 kg
600 lb	272.16 kg
750 lb	340.19 kg
1000 lb	453.59 kg
2000 lb	907.18 kg
5000 lb	2268 kg

Real-world reference

A loaf of bread is about 1 lb. A standard bag of sugar is 5 lb. In kilograms, that gives you: 1 lb = 0.453592 kg, 10 lb = 4.53592 kg, 100 lb = 45.3592 kg.

Frequently asked questions

How many kilograms are in 1 pound?: 1 pound equals 0.453592 kilograms.
How do I convert pounds to kilograms?: Multiply the pound value by 0.453592. So x lb × 0.453592 = the equivalent in kg.
What is 5 pounds in kilograms?: 5 pounds equals 2.26796 kilograms.
What is 10 pounds in kilograms?: 10 pounds equals 4.53592 kilograms.
What is 100 pounds in kilograms?: 100 pounds equals 45.3592 kilograms.
How do I convert back from kilograms to pounds?: Multiply the kilogram value by 2.20462. For example, 1 kg = 2.20462 lb.
Is the pound bigger than the kilogram?: No. 1 pound is smaller than 1 kilogram. It takes 2.20462 pounds to equal 1 kilogram.
Are these conversion factors exact?: Yes. Since the 1959 international yard and pound agreement, imperial/US units are defined exactly in terms of metric units, so the factor used here (0.453592) is exact within IEEE 754 double precision.

About the pound and the kilogram

The pound

The international avoirdupois pound (lb) is a unit of mass in the imperial and US customary systems, defined as exactly 0.45359237 kilograms since the 1959 international yard and pound agreement. It is the everyday unit for body weight, groceries, and shipping in the United States. Sixteen ounces make one pound; fourteen pounds make one stone in British usage.

The kilogram

The kilogram (kg) is the SI base unit of mass. Since the 2019 redefinition it is defined by fixing the Planck constant to exactly 6.62607015 × 10⁻³⁴ J·s, replacing the old International Prototype Kilogram artifact. In everyday use, the kilogram is the global standard for body weight, groceries, and engineering specifications.