Pea Gravel Calculator Formula
Pea gravel is estimated from area, depth, density and waste. Rectangle, circle and known-area inputs use the same volume conversion after area is known.
Volume = area x depth
Cubic yards = cubic feet / 27
Tons = volume x density / 2,000
Example Calculation
A 20 ft by 8 ft pea gravel path at 2 inches deep is 26.67 cubic feet, or 0.99 cubic yards. At 95 lb/ft3 and 5% waste, estimate about 1.33 tons.
Calculation Notes
- Use about 2 inches for light paths and about 3 inches for patios or landscape beds.
- Circle mode is useful for round beds and circular landscape features.
- 95 lb/ft3 is a planning density; local pea gravel can vary by source and moisture.
FAQ
Is pea gravel measured in tons or cubic yards?
Suppliers may quote either. This calculator shows both.
What density should I use?
95 lb/ft3 is a reasonable planning value unless your supplier provides a better number.
Can I calculate a round pea gravel bed?
Yes. Choose circle area and enter the diameter and depth.
How deep should pea gravel be?
Light paths often use about 2 inches. Patios and beds may use about 3 inches or more.