Bad Owl Tool: Your Woodshop Wingman

Pro-grade woodworking calculators, levels, and finishing guides. 100% Free.

Built by a Woodworker, for Woodworkers

Bad Owl Tool was born from shop floor frustration. We got tired of hunting for drill bit charts with sawdust-covered fingers, doing epoxy math on scrap plywood, and trusting "bubble levels" designed for hanging pictures, not building furniture.

"No ads. No upsells. No clutter. Just the technical precision you need to turn rough lumber into a finished masterpiece."

Turn Your Phone Into Your Sharpest Tool

Bad Owl Tool is a Progressive Web App (PWA). That’s tech-speak for: it lives in your browser but works like a native app on your home screen—without the App Store bloat.

What’s in the Toolkit?

Board-Foot Calculators: Precise lumber estimates for furniture, cabinetry, and custom builds. Stop overpaying at the lumber yard.
Drill-Bit & Screw Helpers: Instant lookup for pilot holes, tap sizes, and hardware clearances. No more split grain.
Epoxy & Finish Estimators: Don't guess on the pour. Calculate resin volume and finish coverage before you crack the seal.
Shop-Tuned Levels: High-visibility bubble and bullseye levels calibrated for machinery setup and assembly.
Unit Converters: Seamlessly swap between imperial fractions, decimals, and metric. We handle the 1/16ths so you don't have to.
Shop Recipes & Guides: Access your finishing schedules and shop-made brew recipes right at the bench.

Powered by the Bad Owl Tool online shop

Bad Owl Tool stays free because of the community. It is developed and maintained by Bad Owl Tool shop. Every time you gear up with tools, finishes, or supplies from our shop, you are directly funding the next update, the next calculator, and the next shop-saving feature.

Support the craft. Build wiser.

Bad Owl Tool FAQ

Is Bad Owl Tool really free?

Yes. No subscriptions, no paywalls, and no annoying pop-up ads while you're trying to work. It’s funded entirely by sales at Norfolk Wood Shop.

Do I need to download an app?

Nope. Just visit app.badowltool.com. You can "Add to Home Screen" on iOS or Android to use it just like a native app.

Who is this for?

From the weekend warrior building their first workbench to the professional cabinet shop requiring repeatable accuracy. If you cut wood, you need this.

Norfolk Wood Shop Mug

Norfolk Wood Shop Mug

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