Crushed Stone Calculator
Calculate crushed stone calculator by tons. Precise material estimations for building contractors and DIY home builders across USA/UK/Canada.
Calculate Crushed Stone Calculator
Enter project dimensions below to compute required material quantities.
Calculation Results
Calculated using verified construction formula: Tons = (Length * Width * (Depth / 12)) / 27 * (Density lbs/ft³ / 2000) * 1.10 (Waste)
Quick Summary
The Crushed Stone Calculator estimates required crushed rock, #57 stone, limestone, and crusher run volume in tons, cubic yards, cubic feet, 50lb bags, and bulk material cost for sub-base foundation preparation.
- Stone Tonnage (Tons): Standard purchasing weight for quarry rock orders.
- #57 Stone vs Crusher Run Densities: Supports angular clean stone (100 pcf) and dense grade stone with fines (110 pcf).
- Compaction Allowance: Includes adjustable 10% extra for sub-base compaction.
How to Use the Crushed Stone Calculator
- Enter Coverage Length in feet.
- Enter Coverage Width in feet.
- Enter Stone Depth in inches (e.g. 4 inches for patio base).
- Select Stone Density Type (#57 Stone vs Crusher Run).
- Click Calculate to view tons, cubic yards, 50lb bags, and bulk costs.
Crushed Stone Calculator Formula & Method
This tool utilizes verified construction geometric formulas to compute material requirements:
Cubic Yards = (Cubic Feet / 27) * 1.10 (Waste)
Weight (Tons) = (Cubic Feet * Density lbs/cu ft) / 2,000
Where:
- #57 Stone: 1/2 to 1-inch clean washed crushed granite/limestone (100 lbs/cu ft).
- Crusher Run / dense grade: Crushed stone mixed with rock dust for compaction (110 lbs/cu ft).
- Ton: 2,000 pounds of crushed rock.
Worked Example
Example: 50ft * 20ft Sub-Base (4 Inches #57 Stone Depth) with 10% Waste
- Surface Area: 50 ft * 20 ft = 1,000 sq ft
- Depth in Feet: 4 in / 12 = 0.333 ft
- Base Volume: 1,000 * 0.333 = 333.33 cu ft (12.35 cu yds)
- Volume with 10% Waste: 333.33 * 1.10 = 366.67 cu ft (13.58 cu yds)
Applying the formula yields:
Total Weight in Pounds: 366.67 cu ft * 100 lbs = 36,667 lbs
Total Weight in Tons: 36,667 / 2,000 = 18.33 Tons
Estimated Bulk Cost: 18.33 Tons * = .85
What This Calculator Includes vs. Does Not Include
What This Calculator Includes
- Quarry Rock Volume Scoping: Measures tonnage for #57 stone, #4 ballast, and crusher run base.
- Sub-Base Compaction Factor: Calculates weight conversions for dense rock.
What This Calculator Does Not Include
- Quarry Hauling Delivery Charges: Truck delivery distance surcharges.
Tips & Best Practices
- Use #57 Clean Stone for French Drain Trenches: Clean #57 stone lacks rock dust, allowing water to flow freely through drainage pipes without clogging.
- Use Crusher Run (Dense Grade) Under Concrete Slabs: Crusher run contains rock dust that locks together under plate compaction into a rock-hard sub-base.
Common Mistakes to Avoid
- Not Compacting Crusher Run in 2-Inch Lifts: Plate compactors cannot compact deeper than 2 to 3 inches at a time; compacting in lifts ensures solid base support.
Frequently Asked Questions (FAQ)
How many tons of crushed stone for a 50x20 pad at 4 inches thick?
A 50x20 foot pad at 4 inches thick requires approximately 18.33 tons of #57 crushed stone (13.58 cubic yards).
How much does a cubic yard of crushed stone weigh?
One cubic yard of clean #57 crushed stone weighs 2,700 lbs (1.35 tons); crusher run weighs 2,970 lbs (1.48 tons).
What is #57 crushed stone?
Number 57 stone is crushed granite or limestone sized from 1/2 inch to 1 inch, washed clean of fine rock dust.
What is crusher run (dense grade)?
Crusher run (also called ABC or DGA) is crushed stone mixed with fine rock dust that compacts into a solid base.
How much does a ton of crushed stone cost?
Crushed stone costs between and per ton at quarry yards.
How many square feet does 1 ton of crushed stone cover at 4 inches?
One ton of #57 crushed stone covers approximately 55 square feet at 4 inches depth.
How deep should crushed stone base be under concrete?
A crushed stone base under concrete slabs should be 4 to 6 inches thick.
How many 50lb bags equal 1 ton of crushed stone?
Forty bags of 50lb stone equal 1 US short ton (2,000 lbs).
Is this crushed stone calculator free to use?
Yes, TibCal's Crushed Stone Calculator is 100% free.