Home project cost calculators
Know what your home project costs before you call a contractor.
Enter your measurements and get live estimates for materials and installed cost. Free, no signup, and every price is sourced.
Free to use. Every price is sourced and dated. Updated October 2026.
Quick concrete slab estimate
Installed$483.33
Ready-mix at $135/yd³ + $3/sq ft labor, 10% waste
- Cubic yards
- 1.36
- 80 lb bags
- 62
All calculators
Pick a project. Results update as you type, and you can share or print any estimate.
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Popular guides
All guides- ConcreteHow many bags of concrete for a 10x10 slab?Bag charts for 4, 5 and 6 inch slabs in 80, 60, 50 and 40 lb sizes.
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How it works
Real math, not guesswork. Every calculator shows its formula, a worked example and the sources behind its prices, so you can check the numbers yourself.
Try the concrete slab calculator →Example: a 10 × 10 ft patio
- Measure
- 10 × 10 ft, 4 in thick
- Adjust
- ready-mix $135 per yd³, labor $3 per sq ft
- Plan
- 1.36 yd³ of concrete · 62 bags of 80 lb mix · typical installed cost $600–$1,200 (HomeGuide)
About HouseMathPro
HouseMathPro builds clear, accurate cost and material calculators for US homeowners. Estimates are for planning only and are not a contractor quote. Learn more about us or read our disclaimer.