You can format the axes (if it's a scatter chart) so the X and Y have
the same min and max values.

If you want equal values to be equally spaced on the two axes, it's not
so easy. You need to resort to a VBA solution like this:

http://peltiertech.com/Excel/Charts/SquareGrid.html

- Jon
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Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
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johnd wrote:

Is it possible to set the axes of a graph to be equally scaled?