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