Pound to Kilogram Converter

Enter a value to calculate the result instantly and free of charge.

lb
0.45359237kg

1 lb = 0.45359237 kg

Conversion summary

1 lb = 0.45359237 kg

Formula
Kilogram = Pound ÷ 2.20462262185
Category
Mass
Units
lbkg

How do you convert pound to kilogram?

To convert pound to kilogram, divide the pound value by 2.20462262185. One lb is equal to 0.45359237 kg.

Conversion formula

Kilogram = Pound ÷ 2.20462262185

Pound to Kilogram conversion table

PoundKilogram
1 lb0.45359237 kg
5 lb2.26796185 kg
10 lb4.5359237 kg
25 lb11.33980925 kg
50 lb22.6796185 kg
100 lb45.359237 kg
500 lb226.796185 kg

What is Pound?

The pound is a unit of mass used in imperial and United States customary systems. One international pound is exactly 0.45359237 kilograms.

Short history of Pound

The pound and its lb symbol derive from the Roman libra. The modern avoirdupois pound was internationally standardized in 1959.

Open the Pound unit guide

What is Kilogram?

The kilogram is the base unit of mass in the International System of Units. It is central to science, commerce and engineering.

Short history of Kilogram

The kilogram was first related to water, then to a physical prototype, and since 2019 has been defined by fixing the numerical value of the Planck constant.

Open the Kilogram unit guide

Frequently asked questions

How precise are the results?

Conversion results are calculated to 12 significant figures. Very large or very small values are shown in scientific notation.

Is the Pound to Kilogram converter free?

Yes. The conversion tool on BirimCeviri.app is free and requires no sign-up.

Sources

The definitions and conversion relationships on this page are aligned with standard metrology and SI reference material.

  1. BIPM: The International System of Units (SI Brochure)
  2. NIST: SI Units – Mass
  3. NIST: Guide for the Use of the International System of Units

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