# Avoirdupois Weight Conversion Calculator

## Concepts

The avoirdupois weight system is the most common weight system used in the United States and the United Kingdom. It is also used in many other countries around the world. The avoirdupois system is based on the pound, which is divided into 16 ounces.

## Formulae

The following formulae can be used to convert between different avoirdupois units of weight:

• From pounds to ounces:
``````Ounces = Pounds * 16
``````
• From ounces to pounds:
``````Pounds = Ounces / 16
``````
• From pounds to grams:
``````Grams = Pounds * 453.59237
``````
• From grams to pounds:
``````Pounds = Grams / 453.59237
``````
• From pounds to kilograms:
``````Kilograms = Pounds / 2.20462262185
``````
• From kilograms to pounds:
``````Pounds = Kilograms * 2.20462262185
``````

## Benefits

There are a number of benefits to using an avoirdupois weight conversion calculator:

• Accuracy: Avoirdupois weight conversion calculators are very accurate. They can convert between different avoirdupois units of weight with a high degree of precision.
• Convenience: Avoirdupois weight conversion calculators are very convenient to use. They are available online and can be used from anywhere with an internet connection.
• Speed: Avoirdupois weight conversion calculators can perform conversions very quickly. This can be helpful for people who need to convert weights on a regular basis.

## Interesting facts

Here are some interesting facts about avoirdupois weights:

• The avoirdupois weight system is based on the Roman libra, which was a unit of weight equal to about 11 ounces.
• The avoirdupois pound was originally defined as the weight of 7,000 grains of wheat.
• The avoirdupois ounce was originally defined as the weight of 1/16 of a pound.
• The avoirdupois ton was originally defined as the weight of 20 hundredweight, or 2,240 pounds.

## References 