Unit Converter

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kilograms to pounds

Kilograms to pounds

Convert kilograms to pounds directly for body weight, loads and international measurements, with the exact factor behind the math: 1 pound = 0.45359237 kg, no rounding involved.

The exact factor and where it comes from

1 pound (avoirdupois) equals exactly 0.45359237 kilogram, a value fixed by the same 1959 International Yard and Pound Agreement that defined the mile; conversely, 1 kilogram equals approximately 2.20462262 pounds, usually rounded to 2.20462 for practical use.
The classic mistake here is using the rounded 2.2 factor instead of 2.20462; on larger weights the gap adds up, for example 100 kg × 2.2 gives 220 lb, nearly half a pound (0.462 lb) short of the more precise 220.462 lb.
Another common source of confusion is the British stone, the traditional body-weight unit in the United Kingdom and Ireland, equal to exactly 14 pounds, or 6.35029318 kilograms; a 70 kg person, for example, works out to roughly 11 stone (154.3234 lb ÷ 14 ≈ 11.02 stone).
The term "avoirdupois" comes from Old French aveir de peis ("goods of weight"), a system used in England since the 13th century for general merchandise. It differs from the troy system, still used for precious metals: the troy pound has only 12 ounces and equals 373.2417216 grams, well under the 453.59237 grams of the avoirdupois pound used in this conversion, so a pound of gold and a pound of body weight are not the same unit.

kg → lb examples

Body weight

Input: 70 kg
Expected output: 154,3234 lb

Popular conversion in fitness, equal to roughly 11 stone in the British system.

Simple load

Input: 10 kg
Expected output: 22,0462 lb

Good for logistics and shopping.

Carry-on baggage

Input: 5 kg
Expected output: 11,023113 lb

Common weight limit range for carry-on baggage on low-cost airlines.

Full tool FAQ

Which unit categories does the tool convert?

There are fourteen categories: length, mass, temperature, data, time, speed, area, pressure, volume, energy, power, angle, frequency and fuel economy. Each one holds several units, from nanometer to nautical mile, from bit to exbibyte, from pascal to atmosphere, and conversion only happens between units of the same kind, because turning meters into seconds makes no sense.

Can I see the value in every unit at the same time?

Why is converting temperature different from converting length?

What is the difference between MB and MiB (decimal vs binary)?

Why are L/100 km and km/L not just a different factor?

Can I type the conversion instead of using the selectors?

Is the data I type sent to any server?

How do I control rounding and scientific notation?

Frequently asked questions

Where does the 2.20462 factor come from?

It is the reciprocal of 0.45359237, the exact kilogram value the 1959 International Yard and Pound Agreement assigned to the avoirdupois pound; the reciprocal fraction works out to 2.2046226..., rounded to 2.20462 for the calculation.

Can I convert from lb to kg?

Yes. The unit converter also lets you convert from lb to kg whenever you need, using the same exact factor of 0.45359237 kg per pound.

What is a stone and how does it relate to pounds?

It is the traditional body-weight unit used in the United Kingdom and Ireland; 1 stone equals exactly 14 pounds, or 6.35029318 kg, so dividing the pound result by 14 gives the value in stone.

Is the pound used to weigh gold the same as in this conversion?

No. Precious metals use the troy pound (373.2417216 g), while body weight, freight and shopping use the avoirdupois pound (453.59237 g) calculated here; mixing the two up causes an error of more than 17%.

Next steps

From	To
1 kg	2.204623 lb
2 kg	4.409245 lb
5 kg	11.023113 lb
10 kg	22.046226 lb
20 kg	44.092452 lb
50 kg	110.231131 lb
100 kg	220.462262 lb
1,000 kg	2,204.623 lb

From

1 kg

2.204623 lb

2 kg

4.409245 lb

5 kg

11.023113 lb

10 kg

22.046226 lb

20 kg

44.092452 lb

50 kg

110.231131 lb

100 kg

220.462262 lb

1,000 kg

2,204.623 lb

The exact factor and where it comes from

1 pound (avoirdupois) equals exactly 0.45359237 kilogram, a value fixed by the same 1959 International Yard and Pound Agreement that defined the mile; conversely, 1 kilogram equals approximately 2.20462262 pounds, usually rounded to 2.20462 for practical use.

The classic mistake here is using the rounded 2.2 factor instead of 2.20462; on larger weights the gap adds up, for example 100 kg × 2.2 gives 220 lb, nearly half a pound (0.462 lb) short of the more precise 220.462 lb.

Another common source of confusion is the British stone, the traditional body-weight unit in the United Kingdom and Ireland, equal to exactly 14 pounds, or 6.35029318 kilograms; a 70 kg person, for example, works out to roughly 11 stone (154.3234 lb ÷ 14 ≈ 11.02 stone).

The term "avoirdupois" comes from Old French aveir de peis ("goods of weight"), a system used in England since the 13th century for general merchandise. It differs from the troy system, still used for precious metals: the troy pound has only 12 ounces and equals 373.2417216 grams, well under the 453.59237 grams of the avoirdupois pound used in this conversion, so a pound of gold and a pound of body weight are not the same unit.

kg → lb examples

Body weight

Input: 70 kg
Expected output: 154,3234 lb

Popular conversion in fitness, equal to roughly 11 stone in the British system.

Simple load

Input: 10 kg
Expected output: 22,0462 lb

Good for logistics and shopping.

Carry-on baggage

Input: 5 kg
Expected output: 11,023113 lb

Common weight limit range for carry-on baggage on low-cost airlines.

Full tool FAQ

Which unit categories does the tool convert?

Can I see the value in every unit at the same time?

Why is converting temperature different from converting length?

What is the difference between MB and MiB (decimal vs binary)?

Why are L/100 km and km/L not just a different factor?

Can I type the conversion instead of using the selectors?

Is the data I type sent to any server?

How do I control rounding and scientific notation?

Frequently asked questions

Where does the 2.20462 factor come from?

Can I convert from lb to kg?

Yes. The unit converter also lets you convert from lb to kg whenever you need, using the same exact factor of 0.45359237 kg per pound.

What is a stone and how does it relate to pounds?

It is the traditional body-weight unit used in the United Kingdom and Ireland; 1 stone equals exactly 14 pounds, or 6.35029318 kg, so dividing the pound result by 14 gives the value in stone.