UK Construction Calculators · 236 Tools

Construction estimates, with the maths shown.
Free, instant, UK metric.

Concrete volumes. Roof tiles. Paint litres. 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 qualified trade quote, structural engineer's calculation, or Building Regulations sign-off. Always verify with a professional before ordering materials or starting works.

Construction estimates, with the maths shown. Free, instant, UK metric.

Most-used calculators

Browse by category

Concrete & Foundations (15)

Roofing (14)

Timber & Framing (10)

Masonry & Brickwork (12)

Driveway & Hard Paving (8)

Flooring (15)

Insulation & Energy (6)

Painting & Decorating (9)

Plumbing & Heating (2)

Drainage & Earthworks (10)

Conversions & Units (15)

Planning & Budgeting (10)

Time & Labour (10)

Kitchen (6)

Bathroom (8)

Wall & Ceiling (14)

Windows & Doors (9)

HVAC & Ventilation (1)

Landscaping & Outdoor (20)

Structural Steel & Metal (5)

Project Cost Estimators (15)

Surveying & Mapping (6)

Sustainability & Green Build (7)

Swimming Pool (4)

Waterproofing (5)

Construction estimates, with the maths shown.
Free, instant, UK metric.