It's in the manual: https://www.gnu.org/software/units/manual/html_node/Interactive-Use.html#Interactive-Use https://www.gnu.org/software/units/manual/html_nod

It's in the manual: https://www.gnu.org/software/units/manual/html_node/Interactive-Use.html#Interactive-Use https://www.gnu.org/software/units/manual/html_node/Interact... "The second number gives the conversion in the opposite direction." Try with 'units --verbose' and you get nicer output: $ units lb kg lb = 0.45359237 kg lb = (1 / 2.2046226) kg