Crushed Stone Calculator Square Feet
Calculate exact tonnage, cubic yards, and 50 lb bags of crushed stone needed for any square footage and depth.
📐 Crushed Stone Square Footage Estimator
Crushed Stone Square Feet to Tons Quick Coverage Chart
Estimated tons of standard #57 Crushed Stone (1.4 tons/yd³) required for common residential project areas:
| Square Footage | 2" Depth (Walkways) | 3" Depth (Driveway Top) | 4" Depth (Sturdy Base) | 6" Depth (Heavy Base) |
|---|---|---|---|---|
| 100 sq ft | 0.86 Tons | 1.3 Tons | 1.73 Tons | 2.59 Tons |
| 200 sq ft | 1.73 Tons | 2.59 Tons | 3.46 Tons | 5.19 Tons |
| 500 sq ft | 4.32 Tons | 6.48 Tons | 8.64 Tons | 12.96 Tons |
| 1,000 sq ft | 8.64 Tons | 12.96 Tons | 17.28 Tons | 25.93 Tons |
| 2,000 sq ft | 17.28 Tons | 25.93 Tons | 34.57 Tons | 51.85 Tons |
How to Calculate Crushed Stone by Hand: Step-by-Step
If you want to manually verify your quarry delivery order, use the universal civil engineering formula:
Cubic Yards = (Square Feet × Depth in Inches) ÷ 324Tons Needed = Cubic Yards × 1.40 tons/yd³ (for #57 Stone) Why divide by 324? There are 27 cubic feet in one cubic yard. Since 1 foot has 12 inches, one cubic yard contains 27 × 12 = 324 inch-feet. Dividing your area in square feet multiplied by depth in inches directly yields cubic yards.
Frequently Asked Questions
How many square feet does 1 ton of crushed stone cover?
At a standard 2-inch depth, 1 US ton of #57 crushed stone covers approximately 115 to 120 square feet. At a 3-inch depth, 1 ton covers roughly 75 to 80 square feet. At a 4-inch base depth, 1 ton covers about 55 to 60 square feet.
How do you calculate crushed stone from square feet?
Step 1: Multiply your square footage by your desired depth in inches, then divide by 324 to get cubic yards: Cubic Yards = (Square Feet × Depth in Inches) ÷ 324. Step 2: Multiply cubic yards by the stone density (typically 1.4 tons per yard): Tons = Cubic Yards × 1.4.
What is the recommended crushed stone depth for a driveway?
A new gravel driveway typically requires a total depth of 8 to 12 inches divided into layers: a 4-inch sub-base of #4 heavy stone, a 4-inch base layer of Crusher Run (DGA) compacted thoroughly, and a 2- to 3-inch surface layer of clean #57 crushed stone.
How many 50 lb bags of crushed stone do I need per 100 square feet?
At a 2-inch depth (approx 0.62 cubic yards or 1,730 lbs), you need approximately 35 bags of 50 lb crushed stone for 100 sq ft. At 3 inches deep, you need approximately 52 bags.
Missing a Stone Type or Have Feedback?
We update density presets and formulas regularly based on local quarry feedback.