Free Tools for the Construction Industry

No login. No bullshit. Just practical calculators and tools you can use on-site, right now.

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Estimating & Cost

Material Quantity Calculator

Calculate concrete volume, brickwork, roofing, and flooring quantities with waste factors.

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Labour Cost Estimator

Estimate project labour costs based on hours and trade rates.

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Profit Margin Calculator

Calculate markup, margin, and final quote from your base costs.

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Converters & Reference

Imperial ↔ Metric Converter

Convert between imperial and metric for length, area, volume, and weight.

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Concrete Mix Calculator

Calculate cement, sand, and aggregate ratios for different concrete strengths.

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Paint Coverage Calculator

Work out how many litres you need based on wall area and coats.

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Finance & Admin

Retention Calculator

Calculate retention amounts and release schedules for contracts.

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Cash Flow Projector

Project your monthly cash flow based on jobs and payment terms.

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Variation Order Generator

Create professional variation orders with cost breakdowns.

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