How Much Concrete Do I Need?

Use this guide and calculator to estimate concrete for slabs, footings, columns, and more. Works for any project size.

Frequently Asked Questions

How do I calculate concrete yardage?

Multiply length × width × depth in feet, then divide by 27 to convert cubic feet to cubic yards.

Should I order a little extra concrete?

Yes. Add a 5–10% waste factor to prevent coming up short.

Can I mix my own concrete from bags?

Yes for small projects (under 1 yard). For larger jobs, ready-mix delivery is more cost-effective and consistent.

Concrete Slab Calculator

Calculate concrete needed for a slab. Enter length, width, and thickness to get cubic yards, bags of pre-mix, and cost.

Concrete Cost Calculator

Estimate total concrete cost. Enter volume and local price per cubic yard to get project cost including delivery and labor.

Concrete Yard Calculator

Calculate how many cubic yards of concrete you need. Works for slabs, footings, columns, and custom shapes.

Concrete Footing Calculator

Calculate concrete needed for footings. Enter dimensions, depth, and quantity for accurate volume and bag estimate.

Concrete Column Calculator

Calculate concrete for round or square columns and posts. Enter diameter, side length, height, and quantity.

Concrete Stairs Calculator

Calculate concrete needed for stairs. Enter number of steps, riser height, tread depth, and width for exact volume.