Kilograms to Pounds
Convert kilograms to pounds instantly. Free, fast, no signup.
How to use this tool
- Enter kilograms in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your pounds and the full breakdown beneath it.
Convert kilograms to pounds instantly. Free, fast, no signup.
Formula
Pounds = Kilograms × 2.20462262…
The exact factor is 1 kg = 1 / 0.45359237 lb, which equals approximately 2.2046226218487757.
How it works
Multiply kilograms by the conversion factor 2.20462 (rounded) or the full-precision value 2.2046226218487757. This factor is derived from the exact definition of one pound as 0.45359237 kg, established by the 1959 international agreement. Taking the reciprocal gives the kg-to-lb factor.
Common mistake: Using the shortcut 2.2 instead of 2.20462 introduces an error of about 0.21% — small for everyday use but meaningful in scientific, medical, or shipping contexts where 0.2% on a 100 kg shipment means roughly 210 g of error.
Worked example
Convert 1 kilogram to pounds
- Start with 1 kilogram.
- Multiply by the conversion factor: 1 × 2.2046226218487757.
- Round to four decimal places as displayed: 2.2046.
1 kilogram = 2.2046 pounds
Common mistakes to avoid
- Using 2.2 as the conversion factor instead of 2.2046, understating the pound result by about 0.21% -- over 100 kg that is nearly half a pound.
- Confusing kilograms with kilogram-force (kgf) -- kgf is a unit of force, not mass, and the conversion to pounds-force follows a different path.
- Reversing the operation and multiplying by 0.4536 -- that converts pounds to kilograms, not the other way.
Key terms
- Kilogram (kg)
- The SI base unit of mass, defined since 2019 by fixing the Planck constant at exactly 6.62607015 × 10⁻³⁴ J·s.
- Pound (lb)
- A unit of mass in the US customary and imperial systems defined as exactly 0.45359237 kg.
- Avoirdupois pound
- The standard pound used in everyday commerce in the US and UK (as opposed to the troy pound used for precious metals), equal to 16 ounces or 0.45359237 kg.
- Conversion factor
- A fixed multiplier used to express one unit in terms of another; for kg to lb the factor is approximately 2.20462.
Frequently asked questions
- How do I convert kilograms to pounds?
- Multiply the number of kilograms by 2.20462 to get pounds.