Angle Cut Calculator

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Simple miter: flat boards meeting at any corner. Compound: crown molding or angled panels cut with both miter and bevel. Polygon: multi-sided frames. Unequal: two boards of different face width.
The full angle of the corner where the two boards meet. A standard room corner is 90 degrees.
deg
Miter angle (saw setting)Standard miter
45deg

Rotate the saw table to this angle from the 0-degree fence position.

Bevel angle (blade tilt)0deg
Saw cut angle from square45deg
45 deg
Very shallow<15Standard15-45Steep45-60Near full60+

Miter angle: 45.0 degrees.

  • Set your miter saw to 45.0 degrees from the fence. Each board gets the same cut.
  • Make a test cut on scrap first. Small errors in wall angles compound across many joints.

Next stepAlways verify the fit with scrap pieces before cutting your finish material. A sharp blade with 60 or more teeth produces cleaner cuts and reduces tear-out on miters.

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