Q:

# How many pounds are in a kilo?

A:

One kilogram is equal to 2.2 pounds. According to the National Institute for Standards and Technology, the value of the kilogram has remained close to constant over the centuries, though the exact method used to define it has changed dramatically.

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According to the same source, the first value given for the kilogram was set at the end of the 18th century as the mass of 1 cubic decimeter of water. A century later, the kilogram was redefined as equivalent to the mass of a small ball of platinum-iridium alloy kept by the International Bureau of Weights and Measures. The kilogram remains the only metric unit that is still defined by reference to a prototype of this kind, as the meter is defined in reference to wavelengths of light and the liter in reference to cubic centimeters.

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## Related Questions

• A:

The formula to convert 105 kilograms to pounds is the total number of kilograms multiplied by 2.2 pounds per kilogram. The product is the conversion to pounds. For example, 105 kilograms times 2.2 pounds per kilogram equals 231.49 pounds. The units of kilograms cancel out, leaving only the pound unit.

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• A:

Five-hundred grams is equal to 1 pound 1.6370 ounces. The pound, though often thought of as a unit of weight rather than mass, is actually a mass unit. However, the pound as it is used today is referred to as a mass unit in relation to the force of gravity.

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• A:

Since there are approximately 2.2 kilograms in 1 pound, converting 132 pounds to kilograms requires dividing 132 pounds by 2.2 pounds per kilogram for an equivalent of 60 kilograms. Both kilograms and pounds are units of mass.