Aggregate Calculator
Calculate aggregate calculator for construction. Precise material estimations for building contractors and DIY home builders across USA/UK/Canada.
Calculate Aggregate Calculator
Enter project dimensions below to compute required material quantities.
Calculation Results
Calculated using verified construction formula: Tons = (Length * Width * (Depth / 12)) / 27 * (105 lbs/ft³ / 2000) * (1 + Waste Margin Pct)
Quick Summary
The Aggregate Calculator estimates total construction aggregate, crushed stone, sand, and gravel required in tons, cubic yards, cubic feet, 50lb bags, and material cost for site grading, sub-base preparation, and drainage fill.
- Aggregate Tonnage (Tons): Standard purchasing weight for quarry dump truck orders.
- Cubic Yards & Bags: Computes volume for land grading or pre-packaged 50lb bags.
- Compaction Factor: Includes adjustable 10% safety margin for compaction settling.
How to Use the Aggregate Calculator
- Enter Coverage Length in feet.
- Enter Coverage Width in feet.
- Enter Aggregate Depth in inches.
- Adjust the Waste Margin (%) (10% standard).
- Click Calculate to view tons, cubic yards, 50lb bags, and material cost.
Aggregate Calculator Formula & Method
This tool utilizes verified construction geometric formulas to compute material requirements:
Cubic Yards = (Cubic Feet / 27) * (1 + Waste Margin / 100)
Weight (Tons) = (Cubic Feet * 105 lbs/cu ft) / 2,000
Where:
- Length & Width: Area of sub-base bed.
- Depth: Layer thickness in inches.
- Density: Crushed aggregate weighs approx 105 lbs per cubic foot (1.42 tons per cu yd).
Worked Example
Example: 30ft * 20ft Sub-Base (4 Inches Depth) with 10% Waste
- Surface Area: 30 ft * 20 ft = 600 sq ft
- Depth in Feet: 4 in / 12 = 0.333 ft
- Base Volume: 600 * 0.333 = 200 cu ft (7.41 cu yds)
- Volume with 10% Waste: 200 * 1.10 = 220 cu ft (8.15 cu yds)
Applying the formula yields:
Total Weight in Pounds: 220 cu ft * 105 lbs = 23,100 lbs
Total Weight in Tons: 23,100 / 2,000 = 11.55 Tons
Estimated Bulk Cost: 11.55 Tons * = .00
What This Calculator Includes vs. Does Not Include
What This Calculator Includes
- Universal Sub-Base Aggregate Scoping: Measures crushed stone, gravel, and sand for base courses.
- Weight & Volume Density Conversions: Computes tons, cubic yards, cubic feet, and 50lb bags.
What This Calculator Does Not Include
- Excavation Equipment Rental: Bulldozer or skid-steer loader rental.
Tips & Best Practices
- Use 3/4-Inch Crusher Run for Structural Slabs: Dense-grade aggregate with fines compacts tighter than clean uniform stone, providing rigid slab support.
- Compact Aggregate in 2-Inch Lifts: Vibrate or roll aggregate base layers every 2 inches for maximum proctor compaction density.
Common Mistakes to Avoid
- Pouring Slabs Over Uncompacted Aggregate: Loose sub-base aggregate settles under heavy loads, causing concrete cracking and differential settlement.
Frequently Asked Questions (FAQ)
How many tons of aggregate do I need for a 30x20 pad at 4 inches thick?
A 30x20 foot area with 4 inches of aggregate requires approximately 11.55 tons of aggregate (8.15 cubic yards).
How much does a cubic yard of aggregate weigh?
One cubic yard of dry aggregate weighs approximately 2,835 lbs (1.42 US tons).
How many square feet does 1 ton of aggregate cover at 4 inches?
One ton of aggregate covers approximately 52 square feet at 4 inches depth.
What is the difference between gravel and aggregate?
Aggregate is a broad category including sand, gravel, crushed stone, and recycled concrete; gravel refers specifically to rounded or crushed rock particles.
How much does a ton of aggregate cost?
Construction aggregate costs between and per ton depending on aggregate type and quarry location.
How many 50lb bags of aggregate in a cubic yard?
It takes approximately 57 bags of 50lb aggregate to equal one cubic yard.
What aggregate size is best for French drains?
Washed 3/4-inch clean stone aggregate (#57 stone) is best for French drains.
How much aggregate fits in a dump truck?
A single-axle dump truck holds 5 to 7 tons of aggregate; a tri-axle truck holds 15 to 18 tons.
Is this aggregate calculator free to use?
Yes, TibCal's Aggregate Calculator is 100% free.