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Dovetail Spacing Calculator

Calculate evenly spaced pins and tails for hand-cut dovetail joints.

Tail width
Pin width (narrow face)
Half-pin width
Number of full pins
Layout check (total)
🛒 Shop related: Hardwood lumber · Hand tools · Clamps

Dovetail Angle Guide

Wood TypeRecommended AngleRatio
Hardwood (oak, maple, walnut)7°–8°1:8 to 1:7
Medium (cherry, ash)9°–11°1:6 to 1:5
Softwood (pine, cedar)12°–14°1:5 to 1:4

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How to Space Dovetails Evenly

Dovetail joints are one of the strongest and most visually striking woodworking joints. Even spacing creates a professional look and ensures the joint's mechanical strength is distributed evenly across the board.

The layout starts with two half-pins at each edge of the board. The remaining space is divided between tails and full pins. The tail-to-pin ratio determines the visual character: a 2:1 ratio is traditional (tails are twice as wide as pins), while 3:1 creates a more delicate look for fine furniture.

This calculator determines the exact width of each tail and pin given your board width, number of tails, half-pin width, and desired ratio. Mark these measurements directly on your board for precise hand-cutting.