Your files stay on your device

# Concrete calculator

Work out concrete volume and bag count for slabs, columns, and circular slabs from your dimensions, with a waste allowance.

Pick a shape and enter the dimensions to size the pour.

This is the plain geometric volume plus your waste allowance; it does not know about rebar displacement, formwork buckles, subgrade gaps, or what your supplier actually delivers. Order a little over the bag count on any pour that cannot have a cold joint, because running short mid-pour is the one mistake this tool cannot price for you.
Options

## More unit & math tools

- [Unit converter](/converters/units)
- [Fraction calculator](/converters/fractions)
[All unit & math tools](/converters)

Was this tool useful?
YesNo

---

Canonical HTML: https://nutter.tools/converters/concrete-calculator
Markdown version: https://nutter.tools/converters/concrete-calculator.md
Plain-text version: https://nutter.tools/converters/concrete-calculator.txt
Agent index: https://nutter.tools/llms.txt