Crushed Stone Calculator: Coverage, Tons & Cost for All Stone Grades
Pick a grade, #57, #411, Item #4, Class 5 base rock, limestone or recycled concrete, and this calculator applies the right density automatically as you enter your dimensions and depth.
Enter your dimensions, depth, and stone grade
Your results
Volume you need
2.47 cubic yards
66.7 cu ft
Area
200.0 sq ft
Weight
3.33 tons
6,667 lbs
Bags needed
134 bags
0.5 cu ft bags, rounded up
Estimated cost
-
Add a price to see cost
You need 2.47 cubic yards of #57 stone, about 3.33 tons, to cover 200.0 square feet at a 4-inch depth.
Grade breakdown
Crushed Stone Grades Compared
Each crushed stone grade is a different balance of particle size and fines content, and that balance decides what it's used for. The table below lists the density this calculator applies to each grade and its most common application.
| Grade | lb/ft³ | Tons / cu yd | Typical use |
|---|---|---|---|
| #57 Stone | 100 | 1.35 | Drainage, driveway base, septic fields |
| #411 Stone | 95 | 1.28 | Compactable driveway surfaces, paver base |
| Item #4 / Crusher Run | 105 | 1.42 | Sub-base under driveways and parking areas |
| Base Rock (Class 5) | 110 | 1.49 | Structural road base, heaviest-duty sub-base |
| Limestone | 97 | 1.31 | Pathways, driveway top dressing, pipe bedding |
| Recycled Concrete | 90 | 1.22 | Budget sub-base, an eco-conscious alternative to virgin stone |
Base rock and Item #4 sit at the dense, structural end of this list, built for load-bearing sub-base work. #57 and limestone sit at the clean, free-draining end, built for water to pass through rather than to lock together. #411 and recycled concrete land in between. Enough fines to compact, not so many that water can't move through at all.
Compaction
Compaction Factors by Grade
Fines-heavy grades (#411, Item #4, Class 5, and recycled concrete) settle noticeably once rolled or driven over, since compaction is literally the fine particles filling the air voids between larger pieces. Order about 10 percent extra volume for these to make sure the finished layer still meets your target depth after it settles.
Clean, single-sized stones, #57 and limestone, have no fines to fill those voids, so they barely compress. A 5 percent buffer is enough, and mostly covers uneven spreading and small measurement error rather than genuine settlement.
Related tools
Related Stone & Driveway Calculators
Ordering stone for a full driveway build rather than a single grade? The gravel driveway calculator handles the base and surface layers together and adds the combined total for you. If part of your project is a drainage trench rather than a surface, the French drain gravel calculator sizes #57 clean stone around a perforated pipe, deducting the pipe's own volume automatically. And if you already know your area and just need a weight-to-volume conversion for any of these grades, the cubic yards to tons converter does that math directly.
For every material this site covers in one place, including pea gravel, river rock and the full ten-material density table, start at the gravel coverage calculator homepage.
Answers
Frequently Asked Questions
What is the difference between #57 and #411 crushed stone?
#57 is a clean, angular stone from 3/4 to 1 inch with the fine particles washed out, so water drains straight through it. That's why it's used for drainage trenches and septic fields. #411 is #57 blended with stone dust, and that dust fills the gaps between larger pieces so #411 compacts into a firm surface where #57 alone would stay loose. Use #57 for drainage, #411 where you need a compactable surface.
What is Item #4 crusher run used for?
Item #4, commonly called crusher run, is crushed rock mixed with screenings and fine particles from about 1 inch down to dust. It compacts into a firm sub-base and is usually the least expensive compactable material a yard sells, which is why it's the standard choice under driveways, parking pads and heavy-traffic lanes rather than a finished surface.
What is the densest crushed stone grade?
Class 5 base rock is the densest material in this calculator at 110 pounds per cubic foot, or about 1.49 tons per cubic yard. Its density comes from the same fine particles that make #411 compactable, just in a coarser, more heavily graded mix built to a state highway specification, which is why it's the standard choice for structural road base.
Is recycled concrete as good as virgin crushed stone?
Recycled concrete aggregate performs comparably to Class 5 or crusher run for sub-base and fill applications, typically running slightly lighter at around 90 pounds per cubic foot because of trapped air voids from the original concrete. It's a reasonable budget or sustainability-driven substitute for most sub-base uses, though some specifications for structural or drainage-critical applications still call for virgin stone specifically. Check your project's requirements before substituting.
How much compaction buffer should I add for crushed stone?
Add about 10 percent for stones with fine particles that compact hard, such as #411, Item #4, Class 5 and recycled concrete, since those settle the most under a roller. Clean, single-sized stone such as #57 or limestone with no fines barely compresses, so 5 percent is enough. This calculator's totals are the loose volume for your entered depth. Add the buffer on top when you place the order.
Do all crushed stone grades cost the same per ton?
No. Crusher run and base rock typically sit at the lower end of the $15 to $50 per ton range because they're the least processed, while washed, single-sized stones like #57 cost more because of the extra washing and screening step. Limestone and recycled concrete both tend toward the lower-middle of that range depending on regional supply.