Built to help contractors and DIYers get concrete math right — every time
Concrete Calculator is a free, no-signup tool designed for anyone who works with concrete — professional contractors, construction crews, homeowners tackling a weekend project, or students learning the trade.
Too many people have overpaid for concrete because they guessed wrong, ordered a second truck, or wasted materials on-site. Our goal is simple: give you an accurate estimate before you pick up the phone to order, so you pour confidently and waste nothing.
All calculations are based on standard industry formulas and updated 2026 ready-mix pricing data. Every result includes a bags-of-concrete estimate so you can compare ready-mix vs. bagged options at a glance.
The unit ready-mix suppliers use to price and deliver concrete. We calculate exact volume plus your chosen waste factor.
We show both 80 lb and 60 lb bag counts so you can price out a trip to the hardware store vs. calling a truck.
Enter your local price per yard and rebar cost to get a complete material estimate before you commit.
Built-in waste adjustment (default 10%) so you never run short on pour day.
Our calculations follow standard civil engineering formulas for rectangular and cylindrical volumes. Pricing estimates are based on publicly available national averages and are updated periodically. Always confirm current pricing with your local ready-mix supplier before ordering.
Results are for estimation purposes only. Concrete quantities, structural requirements, and mix specifications for permitted construction work should be reviewed by a licensed professional.
Ready to calculate your project?
Use the Free Calculator