The shop

About CutCalc

CutCalc is a free set of woodworking calculators. It is fast, private shop math: lumber volume, sheet layouts, miters, frames, drawers, spacing, tapers, kerf, and the way wood moves with the weather. The arithmetic runs in your browser. Measure twice, so the cut only happens once.

Each page names the model it uses. A result is a planning number, not a measurement of your board and not a promise that a joint will carry a load. Mark the stock, then cut a test in scrap.

What runs where

Each calculator runs in your browser. Measurements are not sent to a server, and there is no account. The pages themselves are static files. A host may still keep ordinary connection logs, which the privacy page describes.

Where the models come from

Board feet are the ordinary 144-cubic-inch definition. Dressed softwood sizes follow the American Softwood Lumber Standard, with Canadian CLS millimetre sizes shown beside them because those sizes are defined in millimetres, not as a conversion of the inch fraction. Wood movement uses dimensional change coefficients from the Wood Handbook of the U.S. Forest Products Laboratory, a public-domain reference, for moisture contents from 6% to 14%. Miter geometry is stated on that page, including the crown case of about 31.62° and 33.86° for 38° spring at a square corner.

What this is not

It is not a structural engineer, a stair code, a span table, or a grade stamp. It will not tell you that a shelf is safe, that a railing gap is legal, or that a finish is food-safe. If a number matters to a joint, cut it in scrap. If it matters to a building, ask someone who stamps drawings.

Advertising

The site is built so it can carry ads later. Until a real AdSense publisher ID is set in the configuration, no ad tag is loaded and no ad slot is drawn. If ads are turned on, they load only after you accept, and they are labeled. That is a technical choice, not a promise that the site will be accepted into an ad program or that it will earn anything.