Practical calculators for real projects.
Fast, clear answers for the workshop, jobsite, and weekend build—without spreadsheets, sign-ups, or guesswork.
Get the number. Get to work.
Enter your measurements and see results instantly. Every calculator includes a practical allowance where it matters.
Board Foot Calculator
Estimate lumber volume and purchasing quantity.
Formula: thickness × width × length ÷ 12 × quantity.
Concrete Volume
Plan slabs, pads, and footings with a waste allowance.
Round up to match your supplier’s ordering increment.
Stair Stringer
Find a comfortable riser count and actual rise.
Always verify dimensions against your local building code.
Paint Estimator
Estimate wall paint with doors, windows, and two coats.
Coverage varies by surface, color change, and product.
Useful before clever.
Labels match the measurements you actually take in the shop or on site.
No account, no waiting, no spreadsheet setup—results update as you type.
Waste factors, purchasing units, and safety notes help turn math into a plan.
Four benches. Eighteen useful tools.
Fourteen new calculators are ready.
Explore dedicated pages with formulas, worked examples, related tools, and mobile-friendly inputs.