ABOUT US

About My Construction Calculator

Free calculators for real site problems, built and checked by a practising civil engineer. Metric and imperial, with the working shown on every result.

188Calculators
12Categories
15+Years on Site
FreeNo Card Needed

The Engineer Behind the Tools

A Practising Civil Engineer

Civil Engineer · BSc Civil Engineering · 15+ Years Site Experience

I am a civil engineer with a BSc in Civil Engineering and more than 15 years on construction sites. I built these calculators from the quantities I work out on real jobs, such as truck loads, rebar tonnage, excavation and formwork. Every formula is checked against hand calculations before it goes live.

Who It's For

Site Engineers

Check quantities, levels and pour plans quickly before you place an order.

Foremen and Supervisors

Get truck loads, bag counts and crew output in a few taps on your phone.

Estimators and Contractors

Build material take-offs and costs with the working ready to show a client.

Homeowners and DIY

Know what to buy for a slab, wall or tiling job before you visit the supplier.

How Every Calculator Is Checked

One Tested Formula Library
Every page uses the same shared maths, so a fix in one place fixes it everywhere.
Three or More Known Cases
Each formula is tested against hand calculations or published tables before it goes live.
Working Shown on Every Result
You see each step of the calculation, so you can check the numbers yourself.
Review Date on Every Page
Each calculator shows when it was last reviewed, so you know it is current.

What You Can Calculate

Construction Unit Converter Rebar & Steel Formwork Concrete Excavation & Paving Brick & Block Plaster & Mortar Tile & Paint Building & Planning Construction Slope Concrete Curing & Pour Planning Concrete Joint & Waterstop Tools

Found an Error?

Send me the inputs you used. The share link on any result is ideal. Corrections are fixed quickly.

Contact Me