Mortise

Mortise is the shop calculator woodworkers actually reach for. It's fast, accurate, works entirely offline, and never asks for an account. FRACTION CALCULATOR • Type feet, inches, and fractions the way you read a tape: 5' 3 1/2" + 17 1/4 − 3/16 • Exact fraction math, so 1/3 + 1/3 + 1/3 really equals 1 • Results in fractions (to 1/8, 1/16, 1/32, or 1/64), decimals, feet-inches, and millimetres • Quick-fraction keys, an mm key, history, and "divide into equal parts" with layout marks CONVERTER AND FEELER GAUGES • Fractions, decimals, thousandths, millimetres, and centimetres, all at once • Finds the fewest feeler-gauge leaves that stack to any thickness, using your own set • A full 1/64" reference chart SQUARE YOUR CROSSCUT SLED • A step-by-step guide to the 5-cut method, with diagrams that rotate the test piece for you • Enter your caliper readings and Mortise tells you how far to move…