Concrete Volume Calculator
Calculate the exact volume of concrete needed for your construction project based on dimensions and shape.
Concrete Volume Results
Volume Breakdown:
Standard Bag Estimates:
About
Our Concrete Volume Calculator helps construction professionals and DIY enthusiasts accurately estimate the amount of concrete needed for various project types.
Why Choose
Precise calculations for different shapes, waste percentage adjustment, and bag quantity estimates to help you order the right amount of concrete.
Features
Calculate volumes for slabs, footings, walls, and cylinders. Adjust for waste and get ready-mix bag estimates for easier purchasing.
Benefits
Prevent material shortages or excess, save money by ordering the correct amount, and simplify your concrete planning process.
Select Shape & Dimensions
Choose your concrete element shape and enter the required dimensions in meters, feet, or other units.
Adjust Settings
Set the quantity of identical elements and adjust the waste percentage according to your project needs.
Get Results
View the total concrete volume needed including waste, plus ready-mix bag estimates for easier purchasing.
Frequently Asked Questions - Concrete Volume Calculator
The calculations are mathematically precise based on the dimensions you provide. Accuracy depends on your measurements and the waste percentage you select. For irregular shapes, break them down into regular shapes and calculate separately.
Standard projects typically use 5-10% waste allowance. For complex forms or inexperienced crews, consider 10-15%. The default is set to 5% as a conservative estimate for most standard projects.
Bag estimates assume standard ready-mix concrete where one 40kg bag yields approximately 0.011 cubic meters, and one 25kg bag yields about 0.007 cubic meters. Results are rounded up to whole bags.
For different elements (e.g., slab + footings), calculate each separately and sum the totals. Use the quantity field for multiple identical elements of the same size and shape.
You can use any consistent unit (meters, feet, inches) as long as all dimensions are in the same unit. The calculator doesn't convert units - results will be in cubic units of your input (e.g., m³ if using meters).