Concrete Calculator

How It Works

This calculator uses the formula: Volume = Length x Width x Thickness. The result is automatically converted to cubic yards (the standard unit for ordering concrete) and includes your selected waste factor.

Waste Factor Guidelines

• 5%: Simple rectangular slabs, experienced contractors
• 10%: Standard recommendation for most projects
• 15%: Complex shapes, stairs, or first-time DIYers
• 20%: Very complex projects with many cuts

Concrete Properties

• Standard concrete density: ~150 lbs per cubic foot
• 1 cubic yard = 27 cubic feet
• Typical truck capacity: 8-10 cubic yards
• Minimum order: Usually 1 cubic yard

Pro Tips

• Order slightly more than calculated - you can't add more easily
• Consider delivery time and working time (usually 90 minutes)
• Have extra help ready for large pours
• Prepare forms and reinforcement before delivery