Angle Cut Calculator

Find the miter cut angle for two boards meeting at a corner.

Miter cut per board (°) 45

Formula: miter = (180 − joint angle) ÷ 2

Step-by-step with your numbers:

1. Values used:

2. Joint angle = 90 degrees

4. Miter cut per board = 45°

Did we solve your problem today?

Find the saw angle to cut each board so two pieces meet at a given joint angle.

The math behind it

miter cut = (180 − joint angle) ÷ 2. A 90° corner needs 45° cuts.

90° corner → 45° per board.

Not a 90° corner?

This formula handles any angle — each board gets half the complement.