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Decomposed Granite vs Pea Gravel

The same area needs the same cubic yards of either one, but decomposed granite weighs about 8% more per yard, which changes the tonnage and often the price.

ft
ft
ft
sq ft
in
%

First material

tons
$

Second material

tons
$

Enter your numbers and press Calculate.

Side by side

Decomposed GranitePea Gravel
Weight per cubic yard2,800 lb (1.40 t)2,600 lb (1.30 t)
Cubic yards per ton0.710.77
Sq ft per ton at 3 in7783
Average price$25–$50/ton, $38–$75/yd³$28–$45/ton, $29–$86/yd³

Weights and prices from the sources listed below.

Earthstone lists 2 to 3 inches of DG for paths and patios; Hello Gravel suggests 2 to 3 inches of pea gravel for light-traffic paths.

Working it out

Cubic yards = area × depth ÷ 324 (sq ft and inches). Tons = cubic yards × weight per cubic yard.

For 200 sq ft at 3 inches, both need 1.85 cubic yards: 2.59 tons of decomposed granite or 2.41 tons of pea gravel.

Common questions

Which is heavier, decomposed granite or pea gravel?

Decomposed Granite at about 1.40 tons per cubic yard, against 1.30.

Sources

  • https://www.earthstonerock.com/pages/frequently-asked-questions
  • https://hellogravel.com/guides/how-much-aggregate-do-i-need-for-a-garden-path/
  • https://hellogravel.com/guides/2025-gravel-prices-per-ton-delivered-cost-calculator-and-regional-rates/
  • https://homeguide.com/costs/gravel-prices