Crushed Stone Calculator — Tons, Yards & Delivery
Crushed stone is essential for road base, drainage, concrete aggregate, and decorative landscaping. This calculator converts your project area and depth into cubic yards and tons for various stone sizes—from stone dust (#10) to riprap (#1).
Why This Construction Metric Matters
Why: Crushed stone is ordered by the ton but planned by volume. The conversion factor varies by stone type, size, and moisture—#57 stone at 2,700 lb/yd³ differs significantly from riprap at 3,600+ lb/yd³. Accurate conversion prevents expensive over-delivery of material that cannot be returned.
How: Measure the area (L × W), determine the required depth based on application, calculate volume in cubic yards, then convert to tons using the stone's bulk density. For base applications, use 6–8 inches of compacted stone. For drainage, 4–12 inches depending on soil permeability.
- ●Crushed stone size numbers (#57, #67, etc.) indicate the sieve sizes used for grading.
- ●Angular crushed stone interlocks better than rounded river gravel for structural applications.
- ●Compaction reduces crushed stone volume by 10–15%—order accordingly.
- ●Stone dust (#10) can be used as a leveling layer under pavers instead of sand.
🪨 Crushed Stone Calculator
Volume = (L × W × D) / 27. Tons = Volume × Density / 2000. Add 10–20% waste.
📋 Sample Examples
Driveway Base
12 ft × 40 ft driveway, 4" deep
French Drain
50 ft trench, 1.5 ft wide, 12" deep
Patio Base Layer
12 ft × 12 ft patio base, 4" deep
Walkway Base
3 ft × 20 ft walkway, 3" deep
Large Area Coverage
30 ft × 50 ft parking area, 6" deep
Decorative Landscaping
15 ft × 8 ft landscape bed, 2" deep
Custom Project
Enter your own dimensions
📏 Dimensions
Limestone
Dense, durable crushed limestone, excellent for base material
Best for: Driveways, Base layers, Drainage, Parking areas
#57 Stone
Clean crushed stone, excellent drainage
Typical use: Drainage, Base material, French drains
⚙️ Adjustments
💰 Cost Estimation
Planning estimates only. Verify with a licensed engineer or contractor before construction.
📐 Construction Industry Facts
The US produces 1.5 billion tons of crushed stone annually from over 3,600 quarries.
— USGS 2024
Road base requires 6–8 inches of compacted crushed stone before any pavement is applied.
— FHWA
Crushed stone pricing varies from $20/ton for base stone to $55+/ton for decorative varieties.
— HomeAdvisor
Limestone is the most common crushed stone type, accounting for 70% of US production.
— USGS
📋 Key Takeaways
- • Volume = (L × W × D) / 27 cu yd | Tons = Volume × Density / 2000
- • 1 cu yd: ~1.4–1.7 tons (varies by type)
- • 4" depth: ~81 sq ft/cu yd | 6": ~54 sq ft
- • Add 10–20% for compaction and waste
What is a Crushed Stone Calculator?
A crushed stone calculator helps you determine the exact quantity of crushed stone needed for construction and landscaping projects. It calculates volume in cubic yards, weight in tons, and the number of bags required, accounting for compaction, waste, and delivery costs. Different stone types have varying densities, and proper sizing ensures optimal performance for your specific application.
Volume Calculation
Cubic yards and cubic feet
Tonnage
Weight in tons and pounds
Cost Estimation
Material and delivery costs
Compaction
Account for settling
How to Calculate Crushed Stone
Calculation Formula
Tons = (Volume × Density) / 2000
With Compaction = Volume × (1 + Compaction%)
Standard crushed stone density ranges from 2,400-2,900 lbs/cu yd depending on type
Quick Reference
Common Applications
Driveways
Base layer for driveways, typically 4-6" deep
Drainage
French drains and drainage systems
Base Layers
Under pavers, concrete, and patios
Landscaping
Decorative and functional landscaping
Stone Type Reference
| Stone Type | Density (lbs/cu yd) | Compaction | Best For |
|---|---|---|---|
| Limestone | 2,700 | 20% | Driveways, Base layers, Drainage, Parking areas |
| Granite | 2,800 | 18% | Driveways, Heavy-duty base, Railroad ballast, Concrete aggregate |
| Trap Rock | 2,900 | 22% | Highway base, Heavy commercial, Industrial applications |
| River Rock | 2,500 | 5% | Landscaping, Drainage, Decorative, Dry creek beds |
| Pea Gravel | 2,400 | 10% | Walkways, Patios, Playgrounds, Drainage |
| Basalt | 2,850 | 20% | Highway construction, Railroad ballast, Heavy base |
Expert Tips for Crushed Stone
✅ Do's
- • Compact in 4" lifts for base layers
- • Add geotextile under driveways
- • Order 10–15% extra for waste
- • Use #57 or similar for drainage
⚠️ Don'ts
- • Don't skip compaction (settling later)
- • Don't use fine stone for drainage
- • Don't pour on saturated ground
- • Don't skip base for pavers
Frequently Asked Questions
How much crushed stone for 100 sq ft at 4" depth?
100 × (4/12) / 27 ≈ 1.23 cu yd. With 15% waste: ~1.42 cu yd. Order 1.5 cu yd.
What size for driveway base?
#57 or #3 crushed stone, 4–6" compacted. Top with #8 or similar for finish.
Bulk vs bags?
Bulk cheaper for 1+ cu yd. Bags convenient for small projects (<0.5 cu yd).
Disclaimer: Density varies by source. Get quotes from local suppliers. Compaction rates are typical values.
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