US Construction Calculators · 286 Tools

Construction estimates, with the math shown.
Free, instant, US imperial.

Concrete volumes. Roof shingles. Paint gallons. Boiler sizes. Every formula is shown, every number is editable, and nothing leaves your browser.

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Estimates, not advice.

BuildMetricLab is a planning tool. Results are intended to help you scope a job and request quotes — they are not a substitute for a licensed contractor's quote, structural engineer's calculation, or building permit sign-off. Always verify with a professional before ordering materials or starting work.

Construction estimates, with the math shown. Free, instant, US imperial.

Most-used calculators

Browse by category

Concrete & Foundations (15)

Roofing (13)

Timber & Framing (12)

Masonry & Brickwork (12)

Driveway & Hard Paving (8)

Flooring (15)

Insulation & Energy (5)

Painting & Decorating (9)

Plumbing & Heating (2)

Drainage & Earthworks (10)

Conversions & Units (15)

Planning & Budgeting (10)

Time & Labour (10)

Kitchen (10)

Bathroom (8)

Wall & Ceiling (14)

Windows & Doors (14)

HVAC & Ventilation (1)

Landscaping & Outdoor (20)

Structural Steel & Metal (5)

Project Cost Estimators (15)

Surveying & Mapping (5)

Sustainability & Green Build (7)

Swimming Pool (4)

Waterproofing (5)

Solar Sizing (7)

Solar Geometry (4)

Solar Cost (4)

Renewables (3)

Home Cinema & AV (8)

Garden Rooms & Outbuildings (3)

Underfloor Heating (4)

Air Conditioning (4)

Security & Surveillance (5)

Construction estimates, with the math shown.
Free, instant, US imperial.