Concrete & Asphalt Calculators

Calculate concrete volume, bags needed, and paving costs.

3 calculatorsFree foreverIndustry formulas

Concrete and asphalt projects require precise material calculations to avoid costly over-ordering or running short mid-project. Our calculators help you determine exactly how much material you need for driveways, patios, sidewalks, and other paving projects. Concrete is sold by the cubic yard for ready-mix delivery or by the bag for smaller projects. Knowing whether to order ready-mix or use bags depends on your project size. Generally, projects requiring more than one cubic yard benefit from ready-mix delivery. Our calculators provide both options so you can make the best choice. For asphalt projects, we calculate tonnage based on your area and desired thickness, plus estimated costs based on current material pricing. These estimates help you evaluate contractor quotes and plan your project budget accurately.

Start here

Available Calculators

Related guides

Frequently Asked Questions

How thick should my concrete slab be?

Standard residential slabs are 4 inches thick. Driveways that will support vehicles should be 5-6 inches. Heavy equipment areas may need 6-8 inches with reinforcement.

What is the difference between 40lb and 80lb concrete bags?

The difference is simply the amount per bag. An 80lb bag yields about 0.6 cubic feet, while a 40lb bag yields about 0.3 cubic feet. Larger bags are more economical but heavier to handle.

How many cubic yards is a concrete truck?

Standard concrete trucks hold 8-10 cubic yards, though they can deliver partial loads. Most suppliers have minimum delivery requirements, typically around 1 cubic yard.