mgp is right but you can make a custom format that includes your units as text with the number; e.g.
- select cell
- click on Format, then Cells
"Format Cells" dialogue/palette comes up
- select "Number" tab
Intially cells are usually "General" format
- choose desireable format, e.g. "Number"
Choose number of digits to display, whatever
- now choose "Custom" (should be at bottom of list)
A format input box (under "Type:"

comes up,
a separate list box below.
Your number format is shown in the input box
- Type your units as text in quotation marks,
after the number format, in the input box,
including a space after the number format, if desired,
or after the initial quote,
e.g. 0.00 "amp"
- The newly created format is added to the list box,
is automatically applied to the existing cell
when you click OK,
and can be chosen for other cells using Format - Cells.
The number in the formatted cell is used for onward calculations in other cells, the text isn't involved.
![[pc2] [pc2] [pc2]](/data/assets/smilies/pc2.gif)