**To convert pounds to kilograms, the formula "lbs / 2.2 = kilograms" is used.** Converting pounds to kilograms is not as complicated as doing other metric conversions, because both measurements are standard units of mass, the conversion is quite straightforward.

**Determine how many pounds you wish to convert to kilograms**First, know the exact number of pounds to be converted into kilograms. Have this number available to complete the conversion.

**Use a calculator**Converting from pounds to kilograms involves division with decimals. As such, it is easier to do the conversion with a calculator or some other electronic calculating device.

**Divide the number of pounds by 2.2**To find out how many kilograms are equal to a specific number of pounds, divide the pounds by 2.2. This gives you a close answer. Following this method, 4 pounds divided by 2.2 is 1.81 kilograms. If the conversion needs to be more exact, divide the number of pounds by 2.2046 for a more precise answer.