Estimate gravel needed for driveways, garden beds, and pathways. Calculate volume and tons required.

Gravel Volume Calculator | Driveway & Garden Fill

Use this gravel calculator to estimate how much gravel you need for any landscaping, driveway, or ground-fill project. Once activated, you will be able to enter total length, width, and depth to receive an instant volume calculation in cubic meters and tons.

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Standard Gravel Depth Guidelines

• Paths & walkways: 50–75 mm
• Driveways: 100–150 mm
• Drainage layers: 150–200 mm

Example

Driveway: 6m × 3m with depth 0.1m

Volume = 6 × 3 × 0.1 = 1.8 m³

If gravel density is ~1.6 tons per m³:
1.8 × 1.6 = 2.88 tons required

Gravel Density

Most gravel types range between 1.5–1.8 tons per m³, depending on:

• stone type
• moisture level
• compaction rate

Tips Before Ordering Gravel

• Consider compaction: final level settles lower
• Add 5–10% extra for delivery loss or leveling
• Ensure weed membrane beneath for clean finish
• Avoid spreading in heavy rain; water bloats weight

Gravel Types

• Pea gravel: smooth, decorative
• Crushed gravel: structural, driveways
• River rock: larger, landscaping
• Limestone/granite: compact well, ideal load-bearing

FAQs

How accurate is gravel volume estimation?
It provides standard density-based calculation and is generally accurate for most DIY uses.

Can I convert m³ to tons?
Yes, the live calculator will show both.

Should I add sand beneath gravel?
For driveways or paths, a compacted base layer is recommended.