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US tool library

Construction tools for US contractors

Every tool has a dedicated US URL, so browsing never sends you back to the UK site. US-reviewed tools use measurements and terminology expected on American jobsites.

See dollar pricing

Imperial-first. Feet, inches, square feet and cubic yards where the tool is US-reviewed.

No false conversions. UK tax, law and standards tools are paused instead of relabeled.

3 free tools. One account works across both regional versions.

What “US-reviewed” means

11 tools have completed the US review. Measurement tools in that group accept US customary inputs and show feet, inches, square feet, cubic yards, pounds, gallons or Fahrenheit where the calculation calls for them.

Every other tool keeps its US URL but shows a review notice. That includes tools tied to UK tax, law, product sizes, building regulations or British Standards; they never silently present UK guidance as American guidance.

Fully localized today: 11. More are being converted in priority order from real US usage data.

Help shape the US edition

Start with tools that fit the job.

Use the free US-ready calculators today. Dollar estimates, American document language and more contractor workflows are next.

Feet, inches & yards No signup for free tools More US tools in progress
Calculate concreteConvert jobsite units
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Practical construction calculators and project tools for US contractors. 3 US-ready tools stay free.

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Built in the UK. Now building for US contractors too.

Showing 27 of 60 tools

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Cable Lookup

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsElectrical
Under review

Concrete

Calculate concrete volumes for slabs, footings, columns, and steps. Get mix ratios and material quantities.
CalculatorsStructural
Free

Profit Checker

Check whether a estimate covers materials, labor, overheads, contingency, and your target profit margin before you send it.
CalculatorsDocuments
Pro

Roofing

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsRoofing
Under review

Spindle Spacing

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsCarpentry
Under review

Downlights

Calculate optimal downlight spacing and positioning for any room size.
CalculatorsElectrical
Pro

Steel Weight

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsStructural
Under review

Stone, Blocks & Bricks

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsBricklaying
Under review

StoneSmart

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsStone Masonry
Under review

Fencing

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsLandscaping
Under review

Patio

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsLandscaping
Under review

Plaster & Render

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsPlastering
Under review

Weight

Calculate weights of common construction materials by volume or dimensions.
CalculatorsGroundworks
Pro

Stair Geometry

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsStructural
Under review

Scaffolding

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsStructural
Under review

Drainage Fall

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsGroundworks
Under review

Decking

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsLandscaping
Under review

Catnic Lintel

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsStructural
Under review

Timber Span Check

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsStructural
Under review

Gravel & Aggregate

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsGroundworks
Under review

Tile Calculator

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsTiling
Under review

U-Value Estimate

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsRoofing
Under review

Gastite Lookup

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsPlumbing & Heating
Under review

Voltage Drop

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsElectrical
Under review

Turf & Lawn

This tool is listed in the US catalog while its US code, terminology and calculation method are reviewed.
CalculatorsLandscaping
Under review

Paint

Calculate how much paint you need for any room. Accounts for doors, windows, coats, and container sizes.
CalculatorsGeneral Building
Free

Radiator / BTU

Create a rough early-stage heating-load placeholder. Final emitter selection requires room-by-room heat-loss design and manufacturer output data at the actual system temperatures.
CalculatorsPlumbing & Heating
Pro