Compound miter calculator

Spring angle and corner angle to the saw table (miter) and blade tilt (bevel) settings for a molding or rail cap laid on its back.

What you enter

Main results

What it follows

Plain trigonometry on the spring and corner angles you type; no building-code table is looked up.

Every result is marked REVIEW REQUIRED. Illustrative project-planning values only; jurisdiction, species, grade, loads, wet service and current adopted tables require review. Do not use a result directly for permit, purchase, or field use.

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The calculator opens inside the designer, after you sign in.

Accounts are issued by the DeckAndShed team. There is no self-service sign-up.