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Free garden tools · Lawn & ground cover
Work out how much gravel your path, driveway, or garden project needs. Enter your dimensions and depth to estimate coverage, volume, and an optional extra allowance before you order.
Use the same unit system for length, width, and depth.
For a rectangular project, area is length × width. For a circle, area is π × radius². Volume is area multiplied by the entered depth. The optional allowance is added to the calculated volume; the weight estimate is only a rough guide when you select a density.
It depends on the use, stone size, base preparation, and whether the surface will carry foot or vehicle traffic. Follow a suitable project specification and the supplier's guidance.
Calculate the area, multiply it by the depth converted into the same unit, then convert the resulting volume. This calculator does those conversions for you.
An allowance can help account for uneven ground, settling, or small measurement differences. The appropriate amount depends on the site and material, so adjust it to your project.