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Converters

Weight Converter

Convert weight between metric and imperial units. Take care with tons: the US short ton, the imperial long ton and the metric tonne are three different quantities that share a name, and they are listed separately here.

kilograms to pounds

2.2 lb

1 kg converted

1 kg equals
2.2 lb
Conversion factor
Exact by definition

Worth knowing

  • Strictly these are units of mass, not weight. In everyday use the two are treated as interchangeable, which is what this converter does.
  • The US short ton and the imperial long ton are different quantities and are listed separately.

How to use this tool

  1. Enter the weight you want to convert.
  2. Choose the unit you have and the unit you want.
  3. Swap the two with the swap button to reverse the conversion.

Formula and method

kilograms = value × factor
result = kilograms ÷ target factor

Kilograms are the base unit here. Every other unit is defined against it, which keeps all the pairings consistent.

Worked examples

70 kilograms in pounds

  1. 70 ÷ 0.45359237 = 154.3236

154.32 pounds.

11 stone 4 pounds in kilograms

  1. 11 × 14 = 154 pounds, plus 4 = 158 pounds
  2. 158 × 0.45359237 = 71.67

About 71.7 kg.

Notes and limitations

  • Strictly these are units of mass, not weight — weight is a force and changes with gravity. In everyday use the two are treated as interchangeable, which is what this converter does.
  • A US short ton is 907.185 kg, an imperial long ton is 1,016.047 kg, and a metric tonne is exactly 1,000 kg. They are listed separately because confusing them is a 10% error.
  • Stone is used for body weight in the UK and Ireland. One stone is exactly 14 pounds.
  • The pound is defined as exactly 0.45359237 kg, so pound-to-kilogram conversions are exact rather than approximate.

Frequently asked questions

How many pounds are in a kilogram?

About 2.20462. The exact relationship runs the other way: a pound is defined as exactly 0.45359237 kilograms.

How do I convert kilograms to stone and pounds?

Multiply kilograms by 2.20462 to get pounds, then divide by 14 for whole stone with the remainder in pounds. 75 kg is 165.3 lb, which is 11 stone 11.3 lb.

Is a ton the same everywhere?

No. The US short ton is 2,000 lb, the imperial long ton is 2,240 lb, and the metric tonne is 1,000 kg. The short and metric versions differ by about 10%.

What is the difference between mass and weight?

Mass is how much matter something contains and does not change. Weight is the force gravity exerts on that mass, so the same object weighs less on the Moon. Kilograms and pounds as used day to day are really mass.

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