Cement calculator
Looking for a cement calculator?
Most home projects that search for a "cement calculator" actually needconcrete — cement, sand, aggregate and water mixed together. Enter your dimensions below to calculate the concrete volume, cubic yards and number of bags you'll need.
Enter your dimensions
National average is $150–$200 per cubic yard, delivered — edit it to match your local supplier.
Results
- Volume needed
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- Recommended order
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- Estimated cost
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Bagged mix alternative
- 40 lb bags—
- 60 lb bags—
- 80 lb bags—
Bag counts include your waste % and round up to whole bags.
Estimates only — confirm final quantities with your supplier before ordering.
Cement vs. concrete
One ingredient, or the finished mix?
Cement is the powdered binder. Concrete is cement combined with water, sand and coarse aggregate, poured and cured into slabs, footings and driveways. Bagged products labeled "concrete mix" already contain all four ingredients — that's what this calculator sizes for you, whether you call it a cement calculator or a concrete calculator.
FAQ
Common questions
Is a cement calculator the same as a concrete calculator?
Almost always, yes — for the purpose you're after. Cement is one ingredient in concrete (along with water, sand and aggregate); it's rarely used alone in a home project. When people search "cement calculator," they're nearly always trying to figure out how much finished concrete or how many bags of concrete mix they need, which is exactly what this calculator gives you.
What's the actual difference between cement and concrete?
Cement is the fine grey powder — the binder. Concrete is the mixture of cement, water, sand and coarse aggregate (gravel or crushed stone) that cures into the hard material you pour for patios, driveways and slabs. Bagged "concrete mix" you buy at a hardware store already has the cement, sand and aggregate combined.
How many bags of cement do I need for a project?
If you're using pre-mixed bags (the standard for most DIY pours), enter your slab dimensions above and the calculator shows bag counts for 40, 60 and 80 lb bags — no separate cement/sand/gravel math required.
When would I need cement instead of concrete mix?
Straight cement (mixed with sand only, no coarse aggregate) is used for mortar, parging, and some repair patches — not for pouring slabs, footings or driveways. If you're building or repairing one of those, you want concrete.
Building something specific?