How Much Gravel for a Garden Path or Walkway?

Updated 2026-10-12 · Yardly

For a typical garden path, plan 2–3 inches of surface gravel over a compacted base, which works out to about 1 cubic yard per 100 square feet at 3 inches — so a 3-foot-wide, 50-foot path needs roughly 1.4 cubic yards (about 2 tons) of surface stone, plus a base if your soil is soft or wet. Here’s the math, and the one detail that decides whether your path lasts.

The path formula

Gravel is sold by the cubic yard or the ton, but you measure a path in feet and inches. The conversion is the same volume math behind every Yardly calculator:

Path area (sq ft) × depth (inches) ÷ 324 = cubic yards of surface gravel Add a base layer separately: same formula at 3–4 inches of crusher run if your soil needs it. Tons: cubic yards × 1.4 (pea gravel) up to × 1.5 (crushed stone)

A cubic yard covers about 162 sq ft at 2 inches and 108 sq ft at 3 inches — that coverage table is your quick sanity check before you call the yard.

Surface depth: match it to the traffic

The depth you pick depends entirely on what rolls over the path:

• Light foot traffic (just walking): 2–3 inches of surface gravel.
• Wheelbarrow or garden cart: 3–4 inches so the surface doesn’t scalp under load.
• Curved paths: measure along the centerline and treat it as a series of straight sections; don’t guess the length.

A path narrower than 2 ft is awkward to walk; 3–4 ft lets two people or a wheelbarrow pass. Width drives the square footage, which drives the whole order.

The base layer — when you actually need it

A garden path is a thin walking surface on top of a compacted base; the base does the structural work. You can skip it on firm, well-drained soil (fabric only), but add 3–4 inches of crusher run first if:

• Your soil is clay or stays wet — without a base the gravel sinks and you lose the path into the mud.
• A cart or wheelbarrow uses the path regularly.
• You’re building on a slope, where the base anchors everything against washout.

For paths that see a cart or sit on clay, the same angular, compactible principle the Interlocking Concrete Pavement Institute applies to patios holds: use well-graded crushed stone, not rounded pea gravel, for the layer that has to stay put.

Worked examples

Path size	Depth	Cubic yards	~Tons
3 × 25 ft (75 sq ft)	2 in	0.46	0.6
3 × 50 ft (150 sq ft)	3 in	1.39	1.8
4 × 75 ft (300 sq ft)	3 in	2.78	3.6

Always add 10% for compaction, spillage, and the low spots you’ll top up after the first week. So that 3×50 path really means order about 1.5 cubic yards / 2 tons of surface stone, plus a base load if you’re laying one.

Stone choice for the top

• Pea gravel — small, rounded, smooth underfoot; the default for foot-only paths and a clean, uniform look. It migrates, so it wants edging.
• Crushed stone / decomposed granite — angular, locks in place, better for carts and soft soil; DG gives a firmer, more natural walking surface.

Either way, edge the path first (steel, aluminum, or timber) so the stone stays inside the lines instead of spilling into the lawn. The decomposed granite paths guide covers the DG-specific layup.

Keep reading

• Size the exact load in the gravel calculator from your path’s length, width, and depth.
• Comparing loose surfaces? Pea gravel vs river rock breaks down walkable vs decorative stone.
• Building a patio instead? The patio base guide covers the deeper base stack.

Frequently asked questions