Pea Gravel Calculator
How much pea gravel for paths, play areas, and dog runs?
How this is calculated
- Volume in cubic feet = length × width × (depth ÷ 12)
- Cubic yards = cubic feet ÷ 27, then add the settling allowance
- US tons = cubic yards × 2800 ÷ 2000 (pea gravel density)
Common questions
How much pea gravel do I need for a path?
A 20 ft × 3 ft path at 2 inches needs about 0.37 cubic yards — roughly half a ton. With the 10% settling allowance, order about 0.63 tons. That is one wheelbarrow trip from a bulk yard or ~10 of the 0.5 cu ft bags (which cost 3-4× bulk per yard).
How deep should pea gravel be for a play area?
At least 3 inches for walking paths, and if it is under play equipment, pea gravel is actually NOT recommended anymore — it packs and does not cushion falls the way engineered wood fiber or rubber mulch do (CPSC guidance). For a general play/loose area, 3 in over landscape fabric works; under swings, choose a certified surfacing instead.
Why does pea gravel need edging?
The rounded stones roll — without solid edging (steel, aluminum, or paver borders) the path spreads into the lawn within months. Budget for edging as part of the project; it is the difference between a path that lasts a decade and one that disappears into the grass by fall.
How many tons are in a cubic yard of pea gravel?
Pea gravel runs about 2800 lb per cubic yard — 1.4 tons. That is denser than it looks; a single cubic yard is close to a full pickup-truck payload for most half-ton trucks (payloads run 1000-1500 lb, so half a yard is a safe load).
Pea gravel vs crushed stone for a path?
Pea gravel is comfortable barefoot, drains instantly, and looks natural — but it rolls underfoot and wanders without edging. Crushed stone (#8 or #9) locks together, stays put, and is the better choice for slopes, wheelbarrows, and anyone who dislikes loose stone underfoot. Paths: either works with edging; driveways: crushed stone, always.