All Tools

Free Construction Calculators

Estimate materials, calculate quantities, and plan your next project — completely free, no signup required.

Measurement

📐
Area / Square Footage Calculator
Calculate area for rectangles, triangles, circles, and L-shapes. Combine multiple areas.
Use Calculator →
🔄
Construction Unit Converter
Convert feet, inches, meters, board feet, squares, and more.
Use Calculator →

Concrete & Masonry

🧱
Concrete Calculator
Cubic yards for slabs, columns, and stairs with waste factor.
Use Calculator →

Framing & Structure

🪵
Stud & Framing Calculator
Studs, plates, and board feet for any wall.
Use Calculator →
🪜
Stair Calculator
Rise, run, code compliance, and stringer materials.
Use Calculator →

Finishing

📋
Drywall Calculator
Sheets, joint compound, tape, and screws.
Use Calculator →
🎨
Paint Calculator
Gallons needed by room size, coats, and paint type.
Use Calculator →
🏠
Roofing Calculator
Squares, bundles, underlayment, and accessories by pitch.
Use Calculator →

Business

💲
Markup & Margin Calculator
Convert between markup and margin. Know your real profit.
Use Calculator →
📄
Draw Request Template
Free AIA G702-style schedule of values form.
Use Calculator →

Need project management too?

Keystone helps builders manage tasks, schedules, budgets, and daily logs — all from your phone.

Try Keystone Free
All Calculators© 2026 Keystone Construction