# Crushed Stone Calculator

Calculate how much crushed stone you need in tons and cubic yards. Enter area dimensions and depth for driveways, base layers, and drainage projects.

## What this calculates

Crushed stone is the backbone of driveways, base layers, and drainage systems. Enter your project area and depth to see how many tons to order. This calculator supports limestone, granite, gravel, and trap rock with their different densities.

## Inputs

- **Length** (ft) — min 0
- **Width** (ft) — min 0
- **Depth** (in) — min 0, max 24 — Base layers: 4-6 in, driveways: 4-8 in, drainage: 6-12 in
- **Stone Type** — options: Crushed Limestone (100 lb/ft³), Crushed Granite (105 lb/ft³), Crushed Gravel (95 lb/ft³), Trap Rock (110 lb/ft³) — Density varies by stone type
- **Price Per Ton** ($) — min 0

## Outputs

- **Coverage Area** (ft²)
- **Volume** (ft³)
- **Volume** (yd³)
- **Weight** (tons) — Order this amount from a supplier
- **Estimated Cost** — formatted as currency

## Details

## Crushed Stone Sizing Guide

Crushed stone comes in numbered sizes. Picking the right one depends on your project:

| Size | Diameter | Best For |
|---|---|---|
| #57 | 3/4 - 1 in | Driveways, drainage, backfill |
| #67 | 3/4 in | Concrete mix, base under slabs |
| #1 | 2 - 4 in | Railroad ballast, large drainage |
| #8 | 3/8 - 1/2 in | Asphalt mix, walkways |
| #10 (screenings) | Dust - 3/8 in | Paver base, filling gaps |

### How Much Crushed Stone for a Driveway?

A typical 12 x 50 ft driveway at 4 inches deep needs about 7.4 cubic yards or 10 tons of crushed stone. Most contractors recommend two layers: 4 inches of #57 stone as a base topped with 2 inches of #8 or screenings on top.

### Compaction Factor

Crushed stone compacts about 15-20% after spreading and rolling. If you need exactly 4 inches of finished depth, order enough for about 5 inches of loose material. This calculator gives you the compacted volume, so add 15-20% if you want to account for compaction loss.

## Frequently Asked Questions

**Q: How many tons of crushed stone do I need per cubic yard?**

A: One cubic yard of crushed stone weighs about 1.35 tons for limestone and 1.42 tons for granite. The exact conversion depends on the stone type: limestone at 100 lb/ft³ gives 1.35 tons/yd³, while denser trap rock at 110 lb/ft³ gives about 1.49 tons/yd³.

**Q: How deep should crushed stone be for a driveway?**

A: A crushed stone driveway should be 4-8 inches deep total. For light residential traffic, 4 inches works. For heavier use or soft soil, go with 6-8 inches. Layering with larger stone on the bottom and finer material on top gives the best results.

**Q: What is the cheapest crushed stone for driveways?**

A: Crushed limestone is usually the most affordable option at $20-40 per ton. Crushed gravel runs $25-50 per ton. Granite and trap rock cost more, typically $30-65 per ton. Prices depend heavily on your location and distance from the quarry.

**Q: How much area does 1 ton of crushed stone cover?**

A: One ton of crushed stone covers approximately 100 square feet at 2 inches deep, 50 square feet at 4 inches deep, or 33 square feet at 6 inches deep. This varies slightly based on stone density and how well it compacts.

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Source: https://vastcalc.com/calculators/construction/crushed-stone
Category: Construction
Last updated: 2026-04-08