Concrete Calculator - Calculate Yards, Cubic Feet & Bags Needed

How to Use the Concrete Calculator

1. Select shape — slab (rectangle), column (cylinder), or footing
2. Enter dimensions — length, width, depth
3. Instantly see cubic feet, cubic yards, and bags needed

Perfect for contractors, DIYers, and construction pros. All calculations happen in your browser — nothing is uploaded.

Features

• Multiple shapes — slab, column, and footing modes
• Unit conversion — feet/inches or meters/centimeters
• Bag calculator — shows bags for 40lb, 60lb, 80lb, and 90lb mixes
• Total weight — estimated weight of concrete needed
• Instant results — updates as you type