Free concrete tools
Concrete Calculators for Contractors
Calculate concrete volume in cubic yards for slabs, footings, walls, columns, and bags — then push the result straight into a ready-mix order. Free on every MudHub plan.
Every concrete calculator in one place
Most concrete estimating starts the same way: how many yards? MudHub's concrete calculators cover the shapes you actually pour, use the units on your plans, and keep the math consistent across the crew so the office and the field order the same amount.
Slab calculator
Concrete volume calculator for flatwork — driveways, patios, garage floors, and basement slabs, in cubic yards.
Footing calculator
Continuous and spread footings by length, width, and depth, with rebar-friendly dimensions.
Wall calculator
Foundation and retaining wall volume from height, length, and thickness.
Column & circular calculator
Round columns, sonotubes, and piers by diameter and height.
Bag calculator
Converts cubic yards to 40, 60, and 80 lb bag counts for small hand-mixed pours.
Cost estimator
Turns calculated yardage into a material cost estimate for concrete quotes and bids.
Unit converter
Feet, inches, meters, cubic yards, and cubic meters — a construction calculator for mixed-unit plans.
Concrete delivery planning
Round yardage to truck loads so your ready-mix order request matches what the plant can send.
Concrete Volume Calculator
Enter your slab dimensions to get cubic yards, bag counts, and an estimated material cost. Free, no sign-up required. Need another shape? Open the calculator hub.
Total Cubic Yards Required
Includes 5% waste
Specialty concrete calculators
Two field tools go beyond volume. Both are free, both print for the crew, and both save to a project so you have a record of the conditions on the day of the pour.
From calculator to ready-mix order
A calculation is only useful if it turns into concrete on the truck. Save any calculation to a project, then build a ready-mix order with the yardage, mix design, slump, and delivery window already filled in — no re-typing numbers into a text message to dispatch.
Frequently asked questions
- How do I calculate concrete volume?
- Multiply length by width by thickness in feet to get cubic feet, then divide by 27 to get cubic yards. MudHub's concrete volume calculator does this for you, handles inch-based thickness, and adds a waste allowance so your ready-mix order covers the pour.
- How many yards of concrete do I need for a slab?
- A 20 ft x 20 ft slab at 4 inches thick is about 4.94 cubic yards before waste. Use the concrete yard calculator to enter your own dimensions and thickness, then add 5-10 percent for spillage and subgrade variation.
- Are the MudHub concrete calculators free?
- Yes. Every concrete calculator in MudHub is free on all plans, including the Free plan. Paid plans add saved calculations, customers, projects, and ready-mix order delivery.
- Can MudHub help estimate concrete cost?
- Yes. The cost estimator takes your calculated yardage and your ready-mix price per yard to produce a material estimate you can use in a concrete quote or bid.