Use this calculator to work out the measured concrete volume before ordering or adding waste allowance.
Inputs
This topic also has a deeper guide and a printable reference pack, so you can move from the live answer into the method, assumptions, and worked examples without leaving the topic cluster.
A fuller reference guide for room area, volume estimation, bulk-material planning, and the allowances that turn clean geometry into sensible orders.
A practical planning sheet for concrete, brickwork, topsoil, and similar bulk-material questions, focused on quick site checks and ordering logic.
These are the main values the calculator uses. Keep the units consistent and, where relevant, match the assumptions explained in the related guide.
Unit: m
Use the measured slab or pour length in metres.
Unit: m
Enter the measured width for the same concrete section.
Unit: m
Use the planned slab thickness or pour depth in metres.
Use this page when you know the measured length, width, and depth of a pour and want the base concrete volume in cubic metres.
The main result is the raw volume in cubic metres. The supporting value converts the same figure into litres for easier comparison with bagged or mixed quantities.
A 5 m by 3 m slab at 0.12 m depth gives a measured volume of 1.8 cubic metres before any allowance for waste, uneven ground, or over-ordering.
This page gives the measured volume only. Real orders often include allowance for waste, spillage, uneven excavation, or practical pour margin.
Not exactly. Use the concrete bags calculator when you want to translate volume into a bag count based on the yield of a specific product.
Use the Concrete Bags Calculator to estimate concrete bags from measured dimensions, coverage rates, or material sizes.
Use the Room Area Calculator to estimate room area from measured dimensions, coverage rates, or material sizes.
Use the Topsoil Volume Calculator to estimate topsoil volume from measured dimensions, coverage rates, or material sizes.
Use the Brick Count Calculator to estimate brick count from measured dimensions, coverage rates, or material sizes.