Gravel Calculator

How to measure your area

1. For rectangles: area = length × width. For circles: area = π × r².
2. Break irregular shapes into rectangles, add them, and round up slightly.
3. Convert depth to feet (in ÷ 12) or meters (cm ÷ 100).

Assumptions to double-check

• Depth is average depth after grading (low spots can increase volume).
• Material type affects density; supplier conversions (yards ↔ tons) vary.
• Compaction can reduce loose volume—buffers help avoid a second delivery.

Buying tips

• Confirm whether your supplier sells by yards, tons, or bags.
• Ask for a recommended depth for your application (driveway, path, base).
• Round up to delivery minimums and keep a small amount for touch-ups.