---
title: "Groundwork and masonry calculators | BuildBatch"
description: "Calculators for concrete, aggregates, bricks and blocks, measured by volume or by area."
url: https://buildbatch.co.uk/calculators/groundwork/
---

[← All calculators](https://buildbatch.co.uk/calculators/)

# Groundwork and masonry

Concrete, aggregates, bricks and blocks, measured by volume or by area.

No single-material calculator in this group has been released yet.

## Concrete

The concrete calculator, under “Job calculators” on the [all calculators](https://buildbatch.co.uk/calculators/) page, works out the concrete for one slab, path or shed base of even thickness. You enter the thickness; it gives whole bags from the yield on the bag, or cubic metres to order, with the sub-base, a membrane, reinforcement and formwork left as checks.

## What these have in common

Unlike paint or flooring, these are usually ordered by volume or weight rather than by the pack, and the conversion between the two depends on the material. A cubic metre of one aggregate does not weigh the same as a cubic metre of another, and the figure changes with how wet it is.

Where a calculator here needs a density or a yield, it asks for it rather than assuming one, and says where a sensible figure can be found.

## These are not design tools

They work out how much material a shape needs. They do not tell you what the shape should be. Foundation depths, slab thicknesses, reinforcement, lintels and anything structural need a qualified designer and, usually, building control approval.