Gravel Calculator

Your details

Forward mode sizes the order; reverse mode tells you how far a load you already have will spread.
A decorative gravel layer is usually 4-5 cm; a driveway sub-base is often 10 cm or more.
Picks a typical density for you. Choose custom to type an exact figure from your supplier.
Extra for compaction, spillage and uneven ground. 10% is typical.
%
Currency
Gravel to order (with waste)
1.24t
Gravel volume (with waste)0.825m³
Cubic yards1.08yd³
Cubic feet29.13ft³
Coverage area15m²
Volume (m³)0.825
Tonnes1.24

You need about 0.83 m³ of gravel, roughly 1.24 tonnes (waste already added).

  • Volume is area times depth, with every measurement converted to metres first; the waste allowance is already included.
  • Tonnage is volume times density; loose aggregate settles, so the delivered weight covers slightly less area than the loose pile.
  • Round up to the nearest bulk bag or loose-tip load your supplier offers, then confirm the stone size for the job.

Next stepConfirm the density of your specific aggregate with the supplier, then place the order rounded up to their nearest load.

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