Pea Gravel Calculator
Use the pea gravel calculator to estimate volume, weight, and cost for any project.
Volume to order2.4691 cubic yards66.667 cu ft · 1.8878 m³
Weight3.5376 US tons3,209.2 kg · 7,075.2 lb · 3.2092 tonnes
MaterialPea gravel1,700 kg/m³, about 106 lb/ft³
Cubic feet66.667
Cubic metres1.8878
In 50 lb bags142if buying bagged rather than bulk
Area covered200 sq ft18.5806 m²
Depth4 in101.6 mm
One cubic yard covers81 sq ftat 4 in deep
The method
volume = area × depth; weight = volume × density
Depth in inches, volume in yards
This is where the arithmetic usually goes wrong. A cubic yard is 27 cubic feet, so spread 4 inches deep it covers 81 square feet — not 27. Divide the depth in inches by 12 before multiplying, or work in a single unit throughout.
Order by volume when you can and treat the weight as a cross-check. Loose densities vary by about 10% between quarries and rise sharply when the material is wet, so a ton of gravel is a less definite quantity than a cubic yard of it.
Add a compaction allowance for anything that will be rolled or tamped. Crusher run and road base typically lose 20–25% of their loose volume once compacted.