Pea Gravel Cost Calculator

Pea gravel starts at the same quarry as every other construction aggregate — crushed rock from a surface mine tracked by the BLS Producer Price Index for Construction Sand and Gravel Mining (series PCU212321212321). The current index (594.808, April 2026, base June 1982 = 100) puts the national mine-gate price at roughly $17.25/ton. What makes pea gravel more expensive than standard crushed stone is the post-crushing work: washing to strip dust and clay, then screening through a uniform ⅜" mesh. That extra processing adds a 25–30% premium over raw crushed stone.

Nationally, pea gravel runs $30–$75 per ton delivered ^[1]. The wide range reflects three variables: quarry distance (gravel weighs 2,700 lb per cubic yard — trucking is expensive), order size (deliveries under 2 tons often carry a flat fee that doubles the per-ton cost), and color or grade (white, tan, and mixed earth-tone pea gravel can carry premiums above the base washed product).

For small orders, picking up the stone yourself at the quarry eliminates the delivery fee entirely. A full-size pickup carries about 1 cubic yard (1.35 tons). Above 3 tons, a standard tandem dump truck (12–15 ton capacity) delivers in one load — negotiate a delivered per-ton price rather than paying material and delivery as separate items.

The choice between pea gravel and crushed stone is a structural question, not a cosmetic one. They behave differently under load, water, and foot traffic because of their shape — and picking the wrong one creates problems that are expensive to fix.

Pea gravel (⅜" washed, rounded) drains freely because the uniform rounded stones leave large voids between them — water passes straight through. That makes it ideal for French drain backfill, around foundation perimeter drains, and under permeable paver installations. The rounded shape also makes it comfortable to walk on barefoot, which is why it dominates for garden paths, playground surfaces, and between patio pavers.

The downside: pea gravel does not compact. Rounded stones have no angular faces to interlock — they roll past each other under pressure. Under vehicle tires, pea gravel ruts, displaces, and migrates out of the driveway within months. It needs rigid edging (steel, plastic, or timber) to stay contained, and it shifts with freeze-thaw cycles in cold climates.

Crushed stone (¾" minus, angular) compacts into a dense, stable surface because the angular fragments and mixed fines interlock mechanically under a plate compactor. Standard for driveway base courses, under concrete slabs, and structural fill behind retaining walls. The fines fill voids between larger stones, creating a surface that resists displacement under vehicle loads.

The downside: crushed stone is rough underfoot, dusty in dry weather, and its angular edges can cut bare feet. Poor choice for decorative beds, paths, or any area where appearance and comfort matter. Also drains less freely than pea gravel — the fines partially block water flow.

The rule: if people drive on it or a slab sits on it, use crushed stone. If people walk on it or water needs to drain through it, use pea gravel. Mixing the two in the same layer defeats the purpose of both — fines contaminate the drain path, and rounded stones weaken the compacted base.

Quarries sell pea gravel by weight (tons), but you measure your project area in dimensions (feet and inches). The conversion bridges the two: Length (ft) × Width (ft) × Depth (in) ÷ 12 ÷ 27 = cubic yards. Then multiply by 1.35 to convert to tons — pea gravel weighs approximately 2,700 lb per cubic yard (1.35 tons), the same density as most construction gravel.

The calculator above runs this automatically. Enter your area and depth, and it returns tons and a cost range using BLS PPI-indexed pricing ^[1].

Standard depths for common pea gravel applications: 2 inches for patio paver joints and thin decorative layers. 3 inches for walkways and garden paths (the comfortable walking sweet spot — enough depth to cushion footsteps without making the surface feel unstable). 4 inches for playground surfaces (ASTM F1292 requires a minimum depth for fall attenuation, and 4" of pea gravel meets the standard for fall heights up to 5 feet). 12 inches for French drain backfill around a 4" perforated pipe.

A worked example with the default inputs: 15 × 10 ft at 2 inches deep = 15 × 10 × 0.167 ÷ 27 = 0.93 yd³ ≈ 1.25 tons. At $30–$75/ton ^[1], that's $38–$94 in material before delivery. Add 10–15% for spreading waste — order about 1.4 tons.

Pea gravel migrates. Without edging, the rounded stones roll outward from foot traffic, rainfall runoff, and gravity on any slope. Every pea gravel installation needs a rigid border: steel landscape edging (the most durable, stakes every 3 ft), aluminum or plastic edging (lighter, works on curves), or pressure-treated timber borders (cheapest, but rots in 5–8 years in ground contact).

Install edging before spreading stone — it sets the depth boundary and keeps edges crisp during filling. Set the edging top flush with the planned gravel surface or ¼" above so stone doesn't spill over.

Landscape fabric goes under every pea gravel installation that sits on soil. Without it, the rounded stones sink into the subgrade within a single season — you lose depth and the gravel starts mixing with dirt. Use woven geotextile, not solid plastic sheeting. Water must pass through the fabric for drainage; plastic creates puddles that undermine the gravel surface and breed mosquitoes. Pin the fabric every 3 ft with U-shaped landscape staples, overlap seams 6 inches minimum, and fold fabric up at edging borders to prevent side migration.

Drainage slope: pea gravel drains freely, but the subgrade beneath it must slope away from structures. Minimum 1–2% grade (1–2 inches of drop per 8 feet of run). On flat ground, grade the subgrade before laying fabric. Ponding water under pea gravel leads to the stones settling unevenly and the surface developing low spots that collect debris.

Subgrade preparation: remove topsoil and organic material (roots, grass, leaves) from the entire area — organic matter decomposes under the gravel and creates voids that cause settlement. Compact the exposed subgrade with a plate compactor before laying fabric. The time spent on proper subgrade prep is the single biggest factor in whether the pea gravel surface stays flat and drains correctly five years later.

Pea gravel prices on this page are derived from the BLS Producer Price Index for Construction Sand and Gravel Mining (series PCU212321212321), published monthly by the Bureau of Labor Statistics. The current index value (594.808, April 2026, base June 1982 = 100) applied to the USGS Minerals Yearbook 1982 base price ($2.90/ton, national average construction sand and gravel, FOB plant) produces a mine-gate estimate of approximately $17.25/ton.

Pea gravel retails higher than the mine-gate figure because of the additional washing and screening required to produce uniform ⅜" rounded stones, plus delivery. The markup is typically 2.5–4× the producer price for washed decorative stone, compared to 2–3× for raw crushed aggregate. Our mid-estimate of $45/ton and range of $30–$75 ^[1] reflect this premium.

Labor estimates use the BLS Occupational Employment and Wage Statistics for Construction Laborers (SOC 47-2061), national median hourly wage $20.72 (May 2024) ^[2]. We check FRED monthly; when the PPI index updates, the site rebuilds with the new number automatically.