A quick way of converting 180 pounds to kilograms is to divide the pound number by 2.2. Dividing 180 by 2.2 results in 81.82, so 180 lbs. is approximately 81.82 kilograms.
Another way of converting pounds to kilograms is by multiplying the pound number by 0.4535923744953. This method results in a more accurate figure. Using this method, 180 lbs. is approximately 82 kg. when converted, which would be 180 times 0.4535923744953. To convert kilograms back to pounds, reverse the process. Instead of dividing by 2.2, multiple the kilogram value to get its pound value. For instance, to convert 10 kg. to pounds, multiply 10 by 2.2, which means 10 kg. is equal to 22 lbs. Another way of doing this is to divide 10 by 0.4535923744953, which results in 22.05 lbs.
The System of Units in a country affects whether pounds or kilogram is the more popular unit of measurement. There are two major systems of units: imperial and metric. The kilogram, or gram, is the standard unit for measuring weight in countries where the metric system of units is used. Countries that adopt the imperial system of units, such as the United States, use pounds when measuring weight. Of these two options, the metric system is the most popular in the world.