Cement Calculator
Estimates cement mass for common slab mixes using a typical cement content per cubic yard of finished concrete. Adjust for your mix design.
Step 2
Enter project measurements
Use decimals if needed (e.g. 3.5).
Step 3
How to use this calculator
Enter the finished concrete volume you need. The result is planning-grade, not a substitute for batch plant tickets.
What the math is doing
Uses an approximate 350 kg of cement per cubic meter of finished concrete (roughly equivalent to common residential mixes). Your supplier may differ.
Frequently asked questions
Is this mix-design accurate?
No. It is a middle-ground estimate; stamped or high-PSI mixes use different cement factors.
How do I convert to 94 lb bags?
Divide pounds by 94. The tool shows mass you can convert with supplier tables.
Does this include fly ash or slag?
No. Supplementary materials change batch weights.
Should I add waste to cement?
Yes if your waste applies to the whole batch; correlate waste with concrete volume.