How to Convert Kilograms to Pounds

One kilogram equals approximately 2.20462262 pounds. Unlike the inch, this factor is not a clean whole number, so most conversions produce a long decimal that you round at the end. The pound here is the international avoirdupois pound used for body weight, groceries, and shipping, which is different from the troy pound used for precious metals.

To convert kilograms to pounds you multiply by 2.20462262. To convert pounds back to kilograms you divide by that same number, or equivalently multiply by 0.45359237. A 5 kg bag of flour is 5 times 2.20462262, which comes to about 11.02 pounds.

When you just need a ballpark, double the kilograms and add ten percent. For 20 kg that gives 40 plus 4, or 44 pounds, which is within a fraction of the exact 44.09. This works because doubling captures the 2 in the factor and the ten percent bump captures most of the remaining 0.2046. For anything official, though, use the full factor.

Strictly speaking, the kilogram measures mass and the pound is sometimes treated as a unit of force, but in everyday use both name how heavy something is on Earth. Because the conversion assumes standard gravity, you can convert kitchen and bathroom-scale readings freely without worrying about the physics distinction.

The place people go wrong is mixing pound systems. A pound of gold on a jeweler troy scale is lighter than a pound of sugar on a grocery scale, because troy and avoirdupois pounds differ. For any normal weight, from luggage to a newborn, the avoirdupois pound and the 2.20462262 factor are what you want.

Some values are worth memorizing. 1 kg is about 2.2 lb, 10 kg is about 22.05 lb, and 45.36 kg is almost exactly 100 lb. A common gym plate is 20 kg, which is roughly 44 lb, close enough that lifters often treat it as a 45 lb plate even though the two are not identical.