Angle Finder

How to use this angle finder

Use “Find Angle” when you’ve got two measurements — rise (vertical) and run (horizontal) — and need to know the actual angle to set your saw or grinder to. Use “Find Rise” the other way around: if you already know the angle you want and the horizontal run, it tells you how much rise that angle produces over that distance.

Angle finder formula

This is the same relationship a speed square or angle finder tool uses — rise and run form a right triangle, and the angle between the run and the hypotenuse is what you’re cutting to. Slope percentage is the same ratio expressed as rise over run × 100, which is how ramps and roof pitches often get specified instead of degrees.