Tools for Woodworkers

Angle setup

Miter and compound angle calculator

Find the symmetric saw settings for two equal members meeting at an included angle. Add a slope angle when the members rise out of the plan, as with compound frames.

Bench calculator

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Verify critical dimensions and machine setups independently before cutting project material.

01 / METHOD

How to use this calculator

  1. Measure the included angle between the two finished members.
  2. Enter zero slope for an ordinary flat miter or the shared rise angle for a compound joint.
  3. Use the calculated settings as a starting point and verify on scrap.

02 / APPLICATION

Useful in the workshop

  • Split an unusual corner between two parts
  • Set a compound joint for a sloped frame
  • Check complementary offcuts before a test cut

03 / MODEL

Assumptions

  • The two members share the angle equally.
  • Angles are in degrees and saw scales are calibrated from a square cut.
  • The compound model treats both members as having the same slope.

04 / CHECKS

Limitations and safety

  • Saw scales, stock twist, corner measurement, and molding spring-angle conventions vary.
  • Always test critical joints on scrap; do not rely on a displayed angle alone.

Before cutting: independently verify important dimensions, angles, clearances, material behavior, and machine settings. Use safe procedures appropriate to your tools and material.

05 / QUESTIONS

Frequently asked questions

What is a 90° flat corner setting?

For two equal members, the calculator returns a 45° miter and 0° bevel.

Will this set crown molding against a wall?

Not necessarily. Crown setup depends on spring angle and whether it is cut nested or flat; verify that method separately.