Mortise Tenon Calculator
Mortise and tenon layout connects finished tenon size to mortise width, length, depth and fit clearance. Use the working calculator for visible cheek cuts and bottom clearance.
Centered tenon
The working calculator assumes the tenon is centered through stock thickness and reports the cheek cut depth on each face.
cheek_cut = (stock_thickness - tenon_thickness) / 2
Mortise from tenon
Mortise width, length and depth come from the finished tenon plus side, end and bottom clearances.
Shop-fit boundary
This is a layout screen. Strength, racking load, drawbore pins, wedges, glue choice, grain direction and tool deflection still need project checks.
Frequently asked questions
Is mortise tenon the same as mortise and tenon?
This is the shorter search path for the same working mortise-and-tenon layout calculator.
Does it calculate joint strength?
No. It reports dimensional layout and glue area context, not a strength rating.
Related pages
- Mortise and tenon calculator - working tenon, mortise and clearance calculator.
- Tenon size calculator - tenon-thickness search path for the same workflow.
- Dado calculator - slot layout for shelves, dividers and panels.
- Dovetail layout calculator - drawer and case joinery spacing.
- Cut list calculator - prepare repeated rails and stiles before joinery.