🪣 Concrete Calculator
Calculate cubic yards, cubic feet, and bags needed — plus a 2026 cost estimate.
How to Use This Calculator
Select your project shape, enter the length, width, and thickness (or diameter and height for columns), choose a waste factor, and hit Calculate. Results appear instantly — no signup needed.
For most residential slabs and driveways, use a 4-inch thickness and a 10% waste factor. For footings, match your local building code requirements (typically 8–12 inches deep).
How Much Concrete Do You Need?
Concrete volume is calculated in cubic yards (yd³). One cubic yard fills a space 3 feet × 3 feet × 3 feet. Here's the formula for a slab:
(all dimensions in feet — convert inches to feet first)
A standard 10×10 ft patio at 4 inches thick needs about 1.23 cubic yards (without waste) or 1.35 with a 10% waste factor.
Concrete Cost in 2026
Ready-mix concrete delivered typically costs $125–$150 per cubic yard in 2026 for standard 3000 PSI mix, depending on your region. Delivery fees add $100–$150 per trip. Short-load fees apply for orders under 4 cubic yards. Bagged concrete at home improvement stores runs $5–$7 per 60 lb bag.