Professional Construction Calculators
Free, accurate material and cost estimators for contractors and DIY homeowners. No signup required.
Choose Your Calculator
Professional-grade tools designed for accuracy and ease of use on the job site.
Roofing Calculator
Calculate shingles, squares, underlayment and labor costs for any roof type.
- Pitch multiplier
- Material cost
- Labor estimate
- Waste factor
Concrete Calculator
Estimate cubic yards, bags, and total cost for concrete slabs, footings, and driveways.
- Cubic yards
- Bags needed
- Reinforcement
- Cost estimate
Drywall Calculator
Calculate drywall sheets, joint compound, tape, and screws for walls and ceilings.
- Sheets needed
- Finishing materials
- 2025 pricing
- Labor estimate
Dirt & Fill Calculator
Calculate topsoil, fill dirt, sand, and gravel in cubic yards with delivery estimates.
- Multiple materials
- Tons & yards
- Delivery trucks
- Bulk pricing
Mulch Calculator
Calculate mulch coverage for landscaping beds, tree rings, and gardens.
- Cubic yards & bags
- Coverage area
- 2025 pricing
- Bulk delivery
Topsoil Calculator
Estimate topsoil for lawns, gardens, raised beds, and landscaping projects.
- Cubic yards & tons
- Screened options
- Cost estimates
- Settling factor
Gravel Calculator
Calculate gravel for driveways, walkways, drainage, and decorative landscaping.
- Tons & yards
- Driveway layers
- Pea gravel & stone
- Delivery loads
Rafter Calculator
Calculate rafter lengths, cut angles, and materials for roof framing projects.
- Rafter length
- Cut angles
- Birdsmouth cuts
- Material list
Fencing Calculator
Calculate posts, rails, pickets and hardware for wood, vinyl, or chain-link fences.
- Post spacing
- Linear feet
- Gate allowance
- Material list
Masonry Calculator
Estimate bricks, blocks, mortar and labor for walls, fireplaces and retaining walls.
- Brick count
- Mortar bags
- Block estimate
- Cost breakdown
Concrete Block Calculator
Calculate CMU blocks, mortar, grout, and rebar for structural masonry walls.
- Block count
- Grout volume
- Rebar length
- Full cost breakdown
Why TheSiteMath?
Built by contractors, for contractors. We understand what you need on the job site.
100% Free
All calculators are completely free. No signup, no credit card, no hidden fees.
Mobile Optimized
Large buttons and high contrast design perfect for use on job sites with gloves.
Accurate Results
Industry-standard formulas used by professional contractors nationwide.
Instant Calculations
Get results in seconds. No waiting, no loading, just instant accurate estimates.
Cost Estimates
Material and labor costs included based on current market averages.
Privacy First
No data collection. Your project details stay on your device.
How It Works
Choose Calculator
Pick the right tool. We have roofing, concrete, fencing, masonry, and more.
Enter Measurements
Input your dimensions. Helpful tips guide you through each field.
Get Results
See materials and costs instantly. Save or print for your supplier trip.
Ready to Calculate Your Next Project?
Thousands of contractors trust TheSiteMath for accurate estimates. Join them today.
Start with Roofing CalculatorFrequently Asked Questions
Are these calculators really free?
Yes. Free forever. No signup. No credit card. No hidden fees. Pro-grade tools should be available to everyone.
How accurate are the calculations?
We use industry-standard formulas from NRCA and ACI. For critical projects, always verify with a licensed professional.
Can I use these calculators on my phone?
Yes. Large buttons and high contrast design work great on job sites. Even with gloves.
Do you collect my project data?
No. All calculations happen in your browser. We never store or send your data anywhere.
Will you add more calculators?
Yes. We add new tools based on user feedback. Have a request? Contact us.