Material budget estimator

Concrete Slab Cost Calculator

Calculate a planning-level concrete material budget. Enter the supplier's price per cubic yard for a more relevant estimate.

No signupInstant resultUS + metric

How it works

Calculate your material requirement

Estimate ready-mix concrete volume and material cost for a rectangular slab using a local price per cubic yard.

Estimated material cost = adjusted cubic yards × entered price per cubic yard.

A 20 ft × 12 ft × 4 in slab needs 2.96 yd³ before waste. With 10% extra and concrete at $155/yd³, material is approximately $505.

The result covers concrete material only.
Delivery, short-load, pump, reinforcement, forms, excavation, labor, permits, and finishing are separate.
Use a current quote from a supplier near the job site.

Common questions

What costs are excluded?

Labor, reinforcement, base material, forms, finishing, delivery surcharges, pumping, demolition, and permits are not included.

Why does concrete price vary?

Mix design, region, fuel, delivery distance, order size, additives, and seasonal demand all affect pricing.

Can I use this as a contractor quote?

No. It is a planning estimate and should be checked against project drawings, site conditions, and current supplier pricing.