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Pounds to Kilograms

Convert pounds (lb) to kilograms (kg) — instant and accurate

1 lb = 0.45359237 kg  ·  To convert pounds to kilograms, multiply by 0.45359237.

0.453592 kg

Pounds to Kilograms Conversion Table

PoundsKilograms
1 lb0.453592 kg
2 lb0.907185 kg
3 lb1.36078 kg
4 lb1.81437 kg
5 lb2.26796 kg
6 lb2.72155 kg
7 lb3.17515 kg
8 lb3.62874 kg
9 lb4.08233 kg
10 lb4.53592 kg
15 lb6.80389 kg
20 lb9.07185 kg
25 lb11.3398 kg
30 lb13.6078 kg
40 lb18.1437 kg
50 lb22.6796 kg
75 lb34.0194 kg
100 lb45.3592 kg
250 lb113.398 kg
500 lb226.796 kg
1000 lb453.592 kg

Formula

kilograms = pounds × 0.45359237
pounds = kilograms × 2.20462
Example: 5 lb × 0.45359237 = 2.26796 kg

About the Pounds-to-Kilograms Conversion

Converting pounds to kilograms is one of the most-searched conversions on the web — needed for everything from international flights' luggage limits to body-weight comparisons with metric medical records. The factor is exact: 1 lb = 0.45359237 kg, defined by international agreement since 1959.

Real-World Examples

  • 150 lb (average adult weight) = 68.0389 kg
  • 50 lb (luggage limit) = 22.6796 kg
  • 1 lb (one pound) = 0.453592 kg
  • 200 lb (athlete body weight) = 90.7185 kg

Kilograms to Pounds (Reverse)

KilogramsPounds
1 kg2.20462 lb
2 kg4.40925 lb
3 kg6.61387 lb
4 kg8.81849 lb
5 kg11.0231 lb
6 kg13.2277 lb
7 kg15.4324 lb
8 kg17.637 lb
9 kg19.8416 lb
10 kg22.0462 lb
15 kg33.0693 lb
20 kg44.0925 lb
25 kg55.1156 lb
30 kg66.1387 lb
40 kg88.1849 lb
50 kg110.231 lb
75 kg165.347 lb
100 kg220.462 lb
250 kg551.156 lb
500 kg1102.31 lb
1000 kg2204.62 lb

Frequently Asked Questions

How many kilograms are in a pound?

1 pound equals 0.45359237 kilograms.

How do I convert pounds to kilograms?

Multiply the value in pounds by 0.45359237 to get kilograms. For example, 5 lb × 0.45359237 = 2.26796 kg.

How do I convert kilograms back to pounds?

Multiply the value in kilograms by 2.20462 to get pounds. Equivalently, divide by 0.45359237.

How many pounds are in a kilogram?

1 kilogram equals 2.20462 pounds.

How many kilograms is 150 lb?

150 lb (average adult weight) equals 68.0389 kg.

Is the pounds-to-kilograms conversion exact?

The underlying definitions are exact. The decimal representation 0.45359237 is rounded; six significant figures is more than sufficient for everyday use.

About Pounds and Kilograms

The pound (symbol lb, from Latin libra) equals exactly 0.45359237 kilograms by international agreement since 1959. It remains the everyday weight unit in the US.

The kilogram (symbol kg) is the SI base unit of mass. Since 2019 it has been defined by the Planck constant rather than by a physical reference cylinder.

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