Woodworking Calculator Dead On

The only calculator app with dovetail spacing, box joints, and wood movement. Fractions are native. No subscription.

Dead On is the woodworking calculator that thinks like a woodworker.

FRACTION CALCULATOR Mixed fractions are first-class. Type 5-3/4 + 2-1/8 and get an instant answer in fractions — no decimal conversion needed. A custom keyboard designed for the way woodworkers think.

BOARD FOOT CALCULATOR Calculate board feet for any board dimensions. Add multiple boards for a running total. Enter price per board foot to see your total cost before you get to the register.

JOINERY CALCULATORS The only woodworking app with built-in joinery math: • Dovetail spacing with visual layout diagrams • Box joint / finger joint calculator • Dado and groove dimensions • Mortise and tenon proportions (rule of thirds)

WOOD MOVEMENT Select from 30 wood species and calculate seasonal dimensional change. Know exactly how much your tabletop will expand and contract, and how much gap to leave.

PROJECT ORGANIZATION Save calculations to projects. Your blanket chest has its board feet, dovetail spacing, and wood movement — all in one place. Come back next weekend and everything is there.

BUILT FOR WOODWORKERS • Fraction-native input and display • Imperial and metric support • 30 North American wood species database • iCloud sync across your devices • No subscription — pay once, own it forever • No ads, no tracking, no account required

Measure twice. Calculate once.