Construction Calculators That Work
Free, accurate material and measurement calculators for contractors and serious DIYers. No signup. No ads. Just math you can trust.
Calculators
Deck Material Calculator
Calculate deck boards, joists, posts, and fasteners. Enter dimensions, get a complete material list with waste factor.
- Board count & linear feet
- Joist & post spacing
- Adjustable waste factor
- Copy results
Roof Pitch Calculator
Convert between pitch, degrees, and slope factor. Calculate roofing squares from footprint dimensions.
- Rise/run or angle input
- Slope factor for rafters
- Roofing squares helper
- Common pitch reference
More Coming Soon
We're building calculators for stair stringers, concrete volume, paint coverage, and more. Check back or bookmark this page.
Frequently Asked Questions
- What is Cutlist?
- Cutlist is a free collection of construction calculators built for contractors and serious DIYers. We focus on accuracy and usability — no signup required, no ads, just reliable math for your projects.
- Are these calculators free?
- Yes, all calculators on Cutlist are completely free to use. No account, no credit card, no limits. We may add premium features in the future (like saved jobs or PDF exports), but the core calculators will always be free.
- How accurate are the calculations?
- Our calculators use standard US lumber dimensions and industry conventions. The deck calculator uses true (actual) board widths, not nominal sizes. The roof pitch calculator uses proper trigonometry. Always verify critical calculations with local codes and supplier specifications.
- Can I use these on my phone?
- Yes. Cutlist is fully responsive and works on phones, tablets, and desktops. The calculators are designed for quick use on the job site.