Miter Angle Calculator: 8-sided frame
Specific conversion page with reference context, calculator, and nearby values.
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8-sided frame converts to
22.5° miter
Use this as a quick reference for Miter Angle Calculator.
Value Details
Input: 8-sided frame
Output: 22.5° miter
Browse all reference values for Miter Angle Calculator
sides: 8 | interiorAngleDeg: 135 | exteriorAngleDeg: 45
Miter Angle Calculator
Enter the number of sides in a regular polygon frame to get miter and corner angles.
Miter Setting
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Nearby Reference Values
| Frame Type | Miter Angle | Interior Angle | Exterior Angle |
|---|---|---|---|
| 3-sided frame | 60° miter | 60° | 120° |
| 4-sided frame | 45° miter | 90° | 90° |
| 5-sided frame | 36° miter | 108° | 72° |
| 6-sided frame | 30° miter | 120° | 60° |
| 7-sided frame | 25.7143° miter | 128.5714° | 51.4286° |
| 8-sided frame | 22.5° miter | 135° | 45° |
| 9-sided frame | 20° miter | 140° | 40° |
| 10-sided frame | 18° miter | 144° | 36° |
| 11-sided frame | 16.3636° miter | 147.2727° | 32.7273° |
| 12-sided frame | 15° miter | 150° | 30° |
| 13-sided frame | 13.8462° miter | 152.3077° | 27.6923° |
Frequently Asked Questions
Common questions about Miter Angle Calculator, formulas, and expected usage.
How is miter angle calculated for a regular frame?
For an N-sided regular frame, miter angle = 180° / N, which is half of each exterior angle.
What is the difference between interior and miter angles?
Interior angle is the angle inside each corner; miter angle is the saw cut angle on each adjoining board end.
Can I use this for non-regular shapes?
No. This formula assumes all sides and corner angles are equal, as in regular polygons.
Why does a square use 45° miter cuts?
A square has four sides, so 180° ÷ 4 = 45° miter angle per piece end.
Methodology and Review
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Use this page as a fast lookup reference, then confirm final project values using applicable standards and manufacturer documentation.