Gravel calculator

Estimate cubic metres/yards, tonnes/kilograms, and bag counts of gravel or sand for an area.

Volume = area × depth; weight uses the material density. Bag counts round up. Actual coverage varies with stone size and compaction — treat this as an estimate for ordering.

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How to use

  1. Enter length×width or the area, plus the depth.
  2. Pick the material or a custom density and bag size.
  3. Read volume, weight, and bag counts.

What it supports

Metric-first: area in m² (or length×width in m), depth in mm, material densities 1.5–1.6 t/m³ plus custom t/m³, bag in kg, and a waste/compaction percentage. Results show both metric and imperial equivalents. An estimate — real coverage varies with stone size and moisture.

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