Pea Gravel Calculator

Loose bulk densities from the US EPA Standard Volume-to-Weight Conversion Factors table.
Overrides the table density. A supplier ticket in tons per cubic yard divides by 27 and multiplies by 2000 to give lb/ft3.
Typical spreads: 2-3 in of mulch, 3-4 in of decorative stone, 4-6 in of driveway gravel, 4-6 in of new topsoil.
Loose delivered gravel loses roughly 10-20% of its volume when compacted into a base.
Volume
0.4848 yd3
Gravel, Soil and Mulch Calculator
Area covered
78.54 ft2
Area covered
8.727 yd2
Area covered
7.297 m2
Depth
2.000 in
Volume
13.090 ft3
Volume
0.3707 m3
Order this much (rounded up to the half yard)
0.50 yd3
Bulk density used
95.19 lb/ft3
Weight
1,246 lb
Weight
0.623 ton (US short)
Weight
0.565 t (metric)
Weight
565.2 kg
Bags needed
25
Order this much (rounded up to the half ton)
1.0 ton (US short)
One cubic yard covers
162.00 ft2
Worked out from U.S. EPA, Standard Volume-to-Weight Conversion Factors (loose bulk densities for gravel, sand, stone, soil, wood chips and compost) and 3 other sources.
Moisture content moves bulk weight substantially. Wet sand and gravel can be 20-30% heavier than the dry figures above.

How this is worked out

6 steps
  1. Area = pi/4 x (10 ft)^2 = 78.54 sq ft
  2. Depth = 2 in = 0.16667 ft
  3. Volume = 78.54 x 0.16667 = 13.09 cu ft = 0.4848 cu yd
  4. Density = 95.185 lb/ft3 (EPA table: Rock, loose - 1 cubic yard - 2,570 lb (Tellus); 2570/27 = 95.185)
  5. Weight = 13.09 x 95.185 = 1246 lb = 0.623 US short tons
  6. Bags = ceil(1246 lb / 50 lb) = 25

Results are general information, not financial, tax, legal, medical or engineering advice.