[stonecalc id=”stone-amount”]
Stone Amount Calculator Guide
“How much stone do I need?” has a three-step answer that never changes: measure the footprint, choose a depth, convert to weight. This calculator collapses those steps into one pass — enter length, width, and depth, and it returns both cubic yards and tons for the material you pick, defaulting to crushed stone at 1.5 tons per cubic yard.
If you just want a number to plan a budget around before measuring carefully, the table below covers the most common project sizes at the standard 3-inch depth. Match your project to the nearest row and you have a working estimate in seconds.
How Much Stone for Common Project Sizes?
All figures assume crushed stone spread 3 inches deep. Scale proportionally for other depths — 4 inches is one-third more, 2 inches is one-third less:
| Area | Cubic yards | Tons |
|---|---|---|
| 50 sq ft (small bed) | 0.46 | 0.7 |
| 100 sq ft (parking spot strip) | 0.93 | 1.4 |
| 200 sq ft (short path) | 1.85 | 2.8 |
| 300 sq ft (patio) | 2.78 | 4.2 |
| 500 sq ft (large bed or pad) | 4.63 | 6.9 |
| 1,000 sq ft (small driveway) | 9.26 | 13.9 |
Rules of Thumb Worth Memorizing
- One ton ≈ 72 square feet at 3 inches for crushed stone — the single most useful number in stone estimating.
- Cubic yards ≈ square feet × depth in inches ÷ 324 — one formula that works at any depth.
- Tons ≈ cubic yards × 1.5 for most crushed products; use 1.4 for gravel and 1.35 for pea gravel.
- Depth beats area in cost surprises: going from 2 to 4 inches doubles the order even though the yard looks the same size.
- Add 10% to whatever the math says — settling, edges, and uneven subgrade absorb it every time.
These shortcuts get you to a defensible order fast; the calculator above sharpens it to your exact dimensions and material. When the project is specifically a driveway with layered construction, the gravel driveway calculator builds the estimate layer by layer, and the gravel calculator covers loose round stone where the density differs from crushed rock.
[stonecalc_faq id=”stone-amount”]