Formula and input notes
Equal-piece miter cut = included corner angle ÷ 2
| Input | Practical note |
|---|---|
| Corner angle | Enter the included angle between the two finished pieces. The equal-miter result assigns half of it to each cut. |
Worked miter angle example
Miter Angle Calculator example: For two equal pieces meeting at 90°, each miter is 90° ÷ 2 = 45°. The complementary saw reference is 45°.
What the converted result represents
Use the miter and complement as layout references, then test the setup on scrap before cutting finish stock.
Limits of the geometric model
Out-of-square corners, unequal member directions, spring angles on molding, saw gauge conventions, and compound cuts require additional geometry.
Questions specific to this calculation
When is half the corner angle the correct miter setting?
Enter the included corner angle between two equal pieces; the calculator divides it in half for a symmetric miter joint.