Angle precisionSaw settingsBetter fit-ups
Compound Miter Calculator
Compute compound miter and bevel settings for clean crown molding joints and multi-axis angles. Less guesswork, fewer “why is this gap laughing at me?” moments.
Fast setup checklist
- Confirm the crown spring angle and wall/ceiling angle before you cut.
- Make two test pieces and label them “Left/Right”. Future-you will thank you.
- Sneak up on perfect: cut long, test-fit, micro-adjust.
Real world: walls are rarely 90°. If your fit is off, measure the actual corner angle.
Compound Miter Calculator
Fully accurate compound miter & bevel angles for crown molding and complex joinery.
How to use
- Enter your corner angle and crown spring angle (or the inputs your tool requests).
- Read the recommended miter and bevel settings.
- Cut two short test pieces, then dry-fit to validate.
- Adjust slightly if your walls are out of square.
Pro tips
- • Keep stock orientation consistent (ceiling edge stays ceiling edge).
- • Clamp crown firmly: flex during cut causes mystery gaps.
- • For odd corners, measure the actual angle and use it, not “it should be 90°”.
FAQs
Why do my cuts look right but don’t fit?
Common causes: the corner isn’t a true 90°, the crown spring angle differs from what you assumed, or the stock shifted during the cut. Measure the actual corner angle and clamp the work.
Inside vs outside corners?
The same settings often apply, but the orientation flips. Cut and label two test pieces to lock in “left” and “right” for your specific saw and crown position.