Built around the numbers

Measure once.
Build with a plan.

Construction material calculators for the work ahead. Estimate concrete, bricks, plaster and tiles—with every assumption in view.

Technical drawing of a slab, brick wall and tile layout with dimension lines
FROM DIMENSIONS TO MATERIALS01—04
Metric & imperial inputsTransparent formulasAdjustable wasteFree to use
THE TOOLBOX

What are you building?

Start with your dimensions.
Leave with a clearer material list.

FIELD GUIDE / CONCRETE

What goes into
a cubic metre?

Follow the M20 estimating example from wet concrete volume to cement bags, sand and aggregate.

Read the worked example →
1 : 1.5 : 3
KEEP IT HANDY

A few useful references.

Planning values to start from.
Always check the actual product.

Everyday unit conversions

1 foot0.3048 m
1 inch25.4 mm
1 cubic metre35.315 cubic feet
1 cubic yard0.764555 m³

Before you order

Measure your actual bricks and tiles. Confirm bag weights and delivery units. Allow for cuts, breakage and uneven surfaces.

Cement bags can be 20, 25, 40, 42.5 or 50 kg. Select the weight your supplier sells.

Understand the assumptions →
A CALCULATION YOU CAN FOLLOW

Useful numbers.
No hidden guesswork.

A good estimate starts with good inputs. Our tools show the formulas and let you change the assumptions that matter to your job.

Explore all tools & guides →

Measure your project

Enter dimensions in the units you use on site.

Make the assumptions yours

Adjust material sizes, density, mix and allowances.

Check before you build

Compare the estimate with product data and the project specification.