Gravel Calculator 2025

Calculate volume, weight, and cost for any landscaping project.

1. Define Your Area

OR enter total area directly:

2. Set Depth & Material
3. Estimate Cost (Optional)

Total Gravel Needed

0.00

Tons

Equivalent in Bags

0

(0.5 cu ft bags)

Estimated Total Cost

$0

(based on tons)

Project Summary

Gravel Calculation FAQ

How is the amount of gravel calculated?

The calculator first determines the volume needed and then converts it to weight:
1. Area (sq ft) is calculated based on your shape and dimensions.
2. Volume (cu ft) = Area × (Depth in inches / 12).
3. Total Weight (lbs) = Volume (cu ft) × Gravel Density (lb/ft³).
4. Total Weight (tons) = Total Weight in pounds / 2000.

How deep should my gravel be?

The ideal depth depends on the project:

  • Walkways/Paths: 2-4 inches is usually sufficient.
  • Driveways: A base layer of 4-6 inches of larger crushed stone is recommended, followed by a 2-4 inch top layer of smaller, decorative gravel.
  • Decorative Beds: 1-2 inches is often enough to cover the ground.

Why is gravel density important?

Gravel types have very different weights for the same volume. For example, a cubic foot of lightweight lava rock (approx. 90 lbs) weighs significantly less than a cubic foot of dense river rock (approx. 110 lbs). Since gravel is usually sold by weight (tons), selecting the correct density is crucial for an accurate cost and quantity estimate.