(calc.info)Units

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13 Operating on Units
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One special interpretation of algebraic formulas is as numbers with
units.  For example, the formula `5 m / s^2' can be read "five meters
per second squared."  The commands in this chapter help you manipulate
units expressions in this form.  Units-related commands begin with the
`u' prefix key.

Basic Operations on Units

The Units Table

Predefined Units

User-Defined Units