57 Stone Calculator for Tons, Cubic Yards, Cost, and Coverage
Estimate how much No. 57 stone you need for driveways, drainage beds, French drains, retaining wall backfill, paver base layers, and general site work. Enter your dimensions, choose a project shape, add waste if needed, and get fast results in cubic yards, tons, pounds, truckloads, and estimated cost.
🪨 Calculate #57 Stone Needed
How This #57 Stone Estimate Works
This calculator follows the standard material-estimating sequence used for aggregate takeoffs. It first calculates area, then converts depth from inches to feet, computes cubic feet, converts to cubic yards, and finally estimates weight using the selected #57 stone density.
The default density is set to 2,410 lb/yd³ because Gravelshop’s published #57 granite stone calculator uses that value. If your quarry ticket, delivery slip, or local supplier quote lists a different density, switch to custom density and enter that value before calculating.
Open-graded #57 stone can settle after placement and vibration. Published AASHTO #57 reference material notes about 8 percent vertical settlement during orientation, so this tool lets you add waste and settlement separately when you need a more conservative ordering number.
#57 Stone Quick Reference Data
No. 57 stone is commonly used for drainage layers, French drains, retaining wall backfill, driveway topping, and under-slab drainage applications. It is open-graded, which means it drains better than dense-graded base material but does not behave the same way as compactable road base.
Typical #57 Stone Reference Values
| Reference Item | Typical Value | Why It Matters |
|---|---|---|
| Default density | 2,410 lb/yd³ | Used to convert cubic yards into estimated pounds and tons |
| Tons per cubic yard | 1.21 tons/yd³ | Helps when suppliers quote by ton instead of by volume |
| Yield per ton | About 0.80 yd³/ton | Useful for checking supplier delivery quotes |
| Suggested extra material | 5% to 15% | Common estimating allowance for waste and field adjustment |
| Published settlement reference | About 8% | Open-graded #57 stone can seat lower after vibratory orientation |
AASHTO No. 57 Gradation Snapshot
| Sieve | Typical Passing Range | Interpretation |
|---|---|---|
| 1 1/2 inch | 100% | Top size limit |
| 1 inch | 95% to 100% | Most material is under 1 inch |
| 1/2 inch | 25% to 80% | Broad open-graded range |
| No. 4 | 0% to 10% | Low fines content |
| No. 8 | 0% to 5% | Supports drainage performance |
If you need a denser crushed aggregate for compaction, compare this tool with the base rock calculator or the road base calculator. If your project is more general aggregate fill, the gravel calculator may be a better match.
What No. 57 Stone Is Used For
#57 stone is a coarse crushed aggregate commonly used where drainage matters. Typical uses include foundation drainage zones, retaining wall backfill, trench drains, driveway stone, pipe bedding in some specifications, and hardscape drainage layers.
Because the material is open-graded, water can move through the voids more freely than it can through dense-graded stone. That is why contractors often choose it for drainage rock calculations, French drain gravel estimates, and retaining wall drainage systems.
It is not the same material as screenings, stone dust, or compactable road base. For those applications, compare against the crushed stone calculator, the stone dust calculator, or the subbase calculator.
Sample Calculations
These example scenarios show the math behind common #57 stone estimates. They use published estimating references, not project-specific supplier tickets.
Driveway Topping Layer
Dimensions: 40 ft × 10 ft × 2 inches
Volume in cubic feet: 40 × 10 × (2 ÷ 12) = 66.67 cu ft
Volume in cubic yards: 66.67 ÷ 27 = 2.47 yd³
Weight: 2.47 × 2,410 = 5,951 lb
Estimated amount: 5,951 lb, or about 2.98 tons
That result closely matches published supplier examples for a 10 ft by 40 ft area at 2 inches deep. If you add 8 percent overrun, the order target becomes about 3.22 tons.
French Drain Trench
Dimensions: 60 ft long × 18 in wide × 12 in stone depth
Width in feet: 18 ÷ 12 = 1.5 ft
Depth in feet: 12 ÷ 12 = 1.0 ft
Volume: 60 × 1.5 × 1.0 = 90 cu ft = 3.33 yd³
Estimated amount: 3.33 yd³, or about 4.02 tons at 2,410 lb/yd³
A trench estimate like this is easier to order by the ton. If you are also estimating excavation, pair it with the excavation calculator.
Retaining Wall Backfill Strip
Dimensions: 30 ft × 2 ft × 1 ft drainage zone
Volume: 60 cu ft = 2.22 yd³
Weight: 2.22 × 2,410 = 5,350 lb
Tons: 5,350 ÷ 2,000 = 2.68 tons
Estimated amount: about 2.68 tons before waste
Wall drainage zones are often underestimated. Add waste if the trench width varies or if stone will be placed around pipe and fabric folds.
Common #57 Stone Estimating Mistakes
Most ordering errors come from unit conversion problems, not from the stone itself. The list below covers the field mistakes that show up most often.
1. Mixing cubic feet and cubic yards
Stone density and supplier quotes are often based on cubic yards or tons, not cubic feet. If you forget to divide by 27, the final order number will be far too high.
2. Treating #57 stone like compactable road base
No. 57 stone is open-graded. It can seat lower after orientation with vibration, but it does not compact the same way dense-graded base does, so the ordering logic is different.
3. Ignoring extra material for uneven subgrade
A trench or driveway with dips and crowns usually needs more stone than the clean geometric math suggests. A 5 to 15 percent waste allowance is common on real jobs because field conditions are rarely perfect.
4. Ordering by cubic yard when the supplier sells by ton
Many quarries quote stone by the ton. Convert the calculated cubic yards into tons before calling in the order, or ask the supplier for the exact tons-per-yard factor they use.
5. Using the wrong stone for the application
#57 stone works well where drainage matters, but it is not always the right finish material or base. For tighter-compacting fills, compare with the limestone calculator or the base material calculator.
Ordering, Delivery, and Field Planning
Stone suppliers in the USA may sell #57 stone by the ton, by the cubic yard, or by the truckload depending on the market. This tool supports all three planning methods so you can check quotes from local yards before ordering.
Single-axle and tri-axle trucks vary by jurisdiction, route restrictions, and legal load limits. That is why the truckload field is editable instead of fixed. Use your supplier’s actual truck capacity if you already have it.
For driveway work, material cost is only part of the job. If you need a full budget, compare this takeoff with the gravel driveway cost calculator or the project budget calculator.
⚠️ Drainage and Base Note
#57 stone is widely used for drainage because of its open structure. If you need structural fill or a dense compacted subbase under pavements or slabs, review the project specification before ordering, since dense-graded aggregate may be required instead.
Frequently Asked Questions
Published supplier calculator data for #57 granite stone uses 2,410 pounds per cubic yard. That equals about 1.21 tons per cubic yard, or about 0.80 cubic yard per ton.
Published AASHTO #57 references show 95 to 100 percent passing the 1-inch sieve, 25 to 80 percent passing the 1/2-inch sieve, 0 to 10 percent passing the No. 4 sieve, and 0 to 5 percent passing the No. 8 sieve. In practical terms, that means a coarse, open-graded aggregate often described around 3/4 inch nominal stone.
Coverage depends on depth. Published #57 stone examples note about 120 square feet at 2 inches deep, about 80 square feet at 3 inches deep, and about 60 square feet at 4 inches deep per ton, using typical supplier density assumptions.
Yes, it is commonly used for French drains and foundation drainage because the open gradation helps water move through the stone bed. Always confirm the specified aggregate size if your engineer, municipality, or drain manufacturer requires a particular material.
Usually yes. General gravel estimating references suggest adding about 5 to 15 percent for waste, spillage, field variation, and grading adjustment. Open-graded #57 stone references also note about 8 percent settlement after vibratory orientation in some applications.
Not exactly. This tool is tuned for No. 57 stone estimating. If your material is #67, road base, stone dust, or another aggregate blend, use the matching calculator for that material so the density and application assumptions are more accurate.
Sources and Methodology
This tool uses geometry-based material estimating. Volume is calculated from project dimensions, converted from cubic feet to cubic yards using 27 cubic feet per cubic yard, then converted to weight using the selected density.
- Gravelshop, #57 Granite Stone calculator, used for the published density reference of 2,410 lb/yd³, 1.21 tons/yd³, and 0.80 yd³/ton.
- AASHTO #57 Stone Specs reference PDF, used for gradation ranges and the note that #57 stone is open-graded and may show about 8 percent settlement after vibratory orientation.
- CalculatorSoup gravel calculator guide, referenced for common estimating allowances of roughly 5 to 15 percent extra material for waste and field adjustment.
- Dirt Connections, #57 stone estimate examples, referenced for published example coverage values by depth and example yard-to-ton math.
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Important Disclaimer
This calculator provides estimates for planning purposes. For permitted structural work, foundations, multi-story construction, retaining walls over 4 feet, and commercial projects, calculations must be verified by a licensed structural engineer per IBC 2024 §1604. ConcreteCalculate.com is not liable for structural decisions made from these estimates.
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