About BuildCalc UK

Who Built This Site

About Paul

My name is Paul. I have worked in the UK building industry for over 20 years — as a contractor, a company director, and a property developer working across residential and commercial projects. I have priced hundreds of jobs, ordered thousands of tonnes of materials, managed programmes from groundwork to snagging, and dealt with every kind of building site problem in between.

I built BuildCalc UK because I needed it. The tools that come up when you search for a brick count or a concrete volume are mostly American, use imperial measurements, ignore UK material conventions, and often bury the answer behind a sign-up form or three pages of adverts. I wanted fast, accurate, UK-specific calculators that I could use on site with a phone and no signal to spare. So I made them.

Why These Calculators Are Different

Every calculator on this site is built from how work is actually done on a British building site — not from a textbook approximation of one. The brick counts use standard UK metric brick dimensions and common UK pack sizes. The mortar mixes reflect the ratios used by working bricklayers, not laboratory specifications. The concrete volumes use the mix designations recognised by UK batching plants. The cost guides are based on current UK pricing data, updated annually.

Each calculator page also includes a substantial guide section written from direct experience — covering the practical decisions, common mistakes, and real-world considerations that the calculation itself cannot tell you. If you want to know which mix to use for repointing in a conservation area, or how to avoid colour variation across a brick delivery, or when to use a volumetric mixer instead of a transit mix lorry — that context is here, alongside the numbers.

Who These Tools Are For

The calculators are designed for anyone working in or around the UK building industry: bricklayers pricing a job, self-builders working out how many bags to order, developers stress-testing a feasibility appraisal, homeowners trying to understand what their contractor is telling them, and students learning the fundamentals of quantity surveying.

All calculators are completely free to use. No account required, no personal data collected, no paywalls. The site is supported by Google advertising.

Accuracy and Limitations

These calculators are designed to get you into the right ballpark quickly and accurately. They use widely accepted UK industry guidelines including NHBC standards, BCIS benchmark data, and material specifications from major UK manufacturers. However, they are a starting point — not a substitute for a detailed tender, a structural engineer's calculation, or a current quote from your local supplier. Regional pricing varies significantly across the UK, and material specifications change. Always verify critical quantities before ordering, and get professional advice on structural and safety-critical work.