Gravel Calculator

Gravel Calculator

Enter the length, width and depth of your area. You get the cubic yards, tons, bags and cost of gravel, or pick crushed stone, pea gravel, river rock, a stone size, soil or mulch.

ft
ft
ft
sq ft
in
tons
Change it to your supplier's figure.
%
Rochester Concrete Products' install guide adds 10% for compaction and uneven ground.
cu ft
Quikrete's 50 lb all-purpose gravel bag holds about 0.5 cu ft.
$

Enter your numbers and press Calculate.

Calculators by topic

How much gravel do I need?

Cubic yards = length (ft) × width (ft) × depth (in) ÷ 12 ÷ 27. Tons = cubic yards × weight per cubic yard.

Example: a 12 × 10 ft shed pad at 4 inches deep is 120 sq ft × 4 ÷ 12 = 40 cubic feet. Divide by 27 to get 1.48 cubic yards. Dry gravel weighs about 1.42 tons per cubic yard, so that is 2.10 tons, or 80 bags of 0.5 cu ft. Site Prep recommends 4 to 6 inches of crushed stone for a shed pad, 12 inches wider than the shed on every side; the shed base calculator handles that.

Gravel settles when it is compacted. Rochester Concrete Products' install guide adds 10% for compaction and uneven ground; use the Add extra box above to include it.

Weight per cubic yard

MaterialTons per cu ydLb per cu ydSq ft per ton at 3 in
Gravel1.422,83576
Pea Gravel1.302,60083
Crushed Stone1.503,00072
River Rock1.402,80077
Decomposed Granite1.402,80077
Crusher Run1.503,00072
Topsoil1.082,160100
Mulch0.25506427

Gravel and topsoil: Engineering ToolBox. Pea gravel, crushed stone, river rock and DG: Hello Gravel. Crusher run: Select Sand & Gravel. Mulch: The Calculator Site.

Crushed stone sizes

SizeNominal sizeTons per cu yd, loose to dense
No. 51 in to 1/2 in1.28 to 1.48
No. 571 in to No. 41.29 to 1.47
No. 673/4 in to No. 41.43 to 1.68
No. 71/2 in to No. 41.40 to 1.63
No. 83/8 in to No. 81.16 to 1.52
No. 893/8 in to No. 161.19 to 1.46
No. 10No. 4 to 01.56 to 1.98

Nominal sizes from Ohio DOT (AASHTO M43); weights measured by FHWA. See the full size chart.

Common questions

How many cubic yards of gravel are in a ton?

About 0.71 cubic yards of dry gravel, using Engineering ToolBox's 105 lb per cubic foot. Crushed stone at 1.5 tons per cubic yard gives 0.67 cubic yards per ton.

How much does a cubic yard of gravel weigh?

Engineering ToolBox lists dry gravel at 105 lb per cubic foot, or 2,835 lb (1.42 tons) per cubic yard, and wet gravel at 125 lb per cubic foot, or 3,375 lb per cubic yard.

How much area does a ton of gravel cover?

About 114 sq ft at 2 inches deep, 76 sq ft at 3 inches and 57 sq ft at 4 inches.

How much gravel for a 100 sq ft area at 2 inches?

100 × 2 ÷ 12 = 16.7 cubic feet, or 0.617 cubic yards. At 1.42 tons per cubic yard that is 0.88 tons, or 34 bags of 0.5 cu ft.

Popular gravel calculators

More stone, concrete and conversion calculators

Sources

  • https://www.engineeringtoolbox.com/dirt-mud-densities-d_1727.html
  • https://hellogravel.com/guides/2025-gravel-prices-per-ton-delivered-cost-calculator-and-regional-rates/
  • https://selectsg.com/how-much-does-a-yard-of-crushed-stone-weigh/
  • https://www.thecalculatorsite.com/articles/units/how-much-cubic-yard-weigh.php
  • https://www.fhwa.dot.gov/publications/research/infrastructure/structures/bridge/15034/003.cfm
  • https://spinternet.dot.state.oh.us/Divisions/ConstructionMgt/OnlineDocs/Specifications/2005CMS/700/703.htm
  • https://www.siteprep.com/how-much-gravel-for-a-shed-foundation/
  • https://www.doitbest.com/product/276837/
  • https://rochestercp.com/resources/installation-manuals/installation-manual-vintage-6.pdf