Suparate
Free Tool — No Account Required

Free Concrete Slab Calculator

Enter your dimensions and instantly get cubic yards, bag counts, and cost estimates for your concrete pour.

Slab Dimensions

Common thickness:

Slab Preview

LengthWidth4 in

Diagram is illustrative — not to scale

Waste & Options

Price Per Unit (optional)

$
$
$

Prices vary by region. Adjust to match your local supplier.

Measuring an irregular patio or curved walkway? Stop guessing the square footage. Open our AI app, point your camera at the excavated area, and let the AI calculate the exact volume and material list instantly.

Concrete Calculator
Live results
Imperial

Enter your slab dimensions on the left to see material estimates.

FAQ

Concrete slab questions

Manual math vs. AI vision

Got an irregular shape?
Suparate AI measures it for you from a photo.

Curved walkways, L-shaped patios, and odd-dimension slabs are impossible to calculate by hand. Point your camera at the area — Suparate reads the geometry and gives you the exact material list.

More Free Tools for Contractors