This concrete calculator lets you choose a shape (slab, column, or footing) and a unit system (feet or meters) to compute the concrete volume for your project, converts all entered dimensions to cubic feet internally before calculating cubic yards, cubic meters, total volume including wastage, and the number of 80 lb concrete bags needed (about 45 bags per cubic yard), and also includes simple validation that warns you if any required dimension is zero or negative before performing the calculation
🏗️ Concrete Calculator
Calculate concrete volume for your project
Volume (Cubic Feet):
0
Volume (Cubic Yards):
0
Volume (Cubic Meters):
0
With Wastage:
0
Estimated Concrete Bags (80 lb)
0
Features:
Three Shape Options:
- Slab - For flat surfaces like driveways, patios, floors
- Column - For circular columns and pillars
- Footing - For foundation footings
Dual Unit System:
- Feet/Inches (Imperial)
- Meters/Centimeters (Metric)
Calculations Provided:
- Volume in cubic feet
- Volume in cubic yards (standard for concrete ordering)
- Volume in cubic meters
- Volume with wastage factor included
- An estimated number of 80 lb concrete bags is needed
How to Use:
- Select Shape - Choose whether you're calculating for a slab, column, or footing
- Select Unit - Choose between feet or meters
- Enter Dimensions - Input the appropriate measurements for your selected shape
- Set Wastage Factor - Default is 10% (recommended 5-10% for spillage and uneven surfaces)
- Calculate - Click to see all volume calculations and bag estimates
- Clear - Reset all fields to start a new calculation