Enter a value, select the source and target units, and convert. Results also update while you type. Swap units keeps the entered value. Common examples fill the calculator for you. Copy copies the numeric result only.
Good to know
This converts mass, commonly called weight. Pounds and ounces are avoirdupois, not troy units used for precious metals. One pound is exactly 0.45359237 kg. US short tons contain 2,000 lb; imperial long tons contain 2,240 lb.
