🏗️ Concrete Calculator
Calculate concrete volume, weight, and cost for your construction projects. Estimate cubic yards, bags needed, and material costs for slabs, footings, driveways, and foundations with accurate measurements.
📦 Concrete Needed
7.4
cubic yards
📊 Material Requirements
💰 Cost Breakdown
📏 Project Details
🏗️ Concrete Strength Guide
| PSI |
Application |
Use Case |
| 2,500 |
🏠 Residential |
Patios, walkways |
| 3,000 |
🏗️ Standard |
Driveways, slabs |
| 3,500 |
🏢 Commercial |
Floors, footings |
| 4,000 |
💪 High Strength |
Foundations, beams |
| 5,000+ |
🏗️ Structural |
Columns, bridges |
🏗️ Understanding Concrete Calculations
Concrete is measured by volume, typically in cubic yards in the US or cubic meters internationally. Accurate calculations ensure you order the right amount of material while minimizing waste and cost overruns.
📐 Common Concrete Projects
| Project Type |
Typical Thickness |
Strength (PSI) |
Special Considerations |
| 🏠 Residential Slab |
4-6 inches |
2,500-3,000 |
Vapor barrier, wire mesh |
| 🚗 Driveway |
4-6 inches |
3,000-3,500 |
Rebar for heavy loads |
| 🏗️ Foundation |
8-12 inches |
3,500-4,000 |
Waterproofing, drainage |
| 🚶♂️ Sidewalk |
4 inches |
2,500-3,000 |
Control joints every 4-6 ft |
| 🏢 Commercial Floor |
6-8 inches |
4,000-5,000 |
Fiber reinforcement |
📦 Concrete Bag Coverage
| Bag Size |
Coverage (4" thick) |
Cubic Feet |
Best For |
| 40 lb |
1.8 sq ft |
0.30 cu ft |
Small repairs |
| 60 lb |
2.7 sq ft |
0.45 cu ft |
Medium projects |
| 80 lb |
3.6 sq ft |
0.60 cu ft |
Large projects |
| 1 Cubic Yard |
81 sq ft |
27 cu ft |
Ready-mix delivery |
🔧 Tools & Materials Needed
| Category |
Items |
Purpose |
Estimated Cost |
| 🛠️ Basic Tools |
Shovel, wheelbarrow, float |
Mixing and finishing |
$50-150 |
| 📏 Measuring |
Tape measure, level, stakes |
Layout and leveling |
$30-80 |
| 🏗️ Reinforcement |
Rebar, wire mesh, fiber |
Structural strength |
$0.50-2.00/sq ft |
| 🛡️ Protection |
Plastic sheeting, curing compound |
Weather protection |
$0.10-0.30/sq ft |
⏰ Concrete Timeline
| Stage |
Time |
Description |
Critical Factors |
| 🏗️ Preparation |
1-2 days |
Excavation, forms, reinforcement |
Proper grade, compaction |
| 🚛 Pour Day |
2-6 hours |
Concrete placement and finishing |
Weather, crew size |
| ⏰ Initial Set |
30-60 minutes |
Surface becomes firm |
Temperature, humidity |
| 🚶♂️ Walk On |
24-48 hours |
Light foot traffic |
Proper curing |
| 🚗 Full Load |
7-28 days |
Vehicle traffic, full strength |
Continuous curing |
💡 Cost-Saving Tips
- 📊 Accurate Measurements: Precise calculations prevent over-ordering
- 🚛 Bulk Delivery: Ready-mix is often cheaper for large projects
- 📅 Timing: Avoid premium rates for weekend/holiday delivery
- 🏗️ DIY Preparation: Do your own excavation and form work
- 🤝 Group Orders: Coordinate with neighbors for bulk discounts
- ♻️ Recycled Aggregate: Use recycled concrete for non-structural applications
🔗 Related Calculators
Explore our other construction and material calculators: