How Much Pea Gravel Do I Need for a Patio?

The short answer

For a typical 4-inch-deep pea gravel patio, you need about 1.23 cubic yards per 100 square feet. Multiply your patio's square footage by 0.033 (for 4 inches) to get cubic yards, then add 5–10% for waste. Use a pea gravel calculator to confirm your numbers.

Key takeaways

Plan for depth: 4 inches is the standard for a stable, comfortable patio surface.
Order extra: always add 5–10% to your total to account for settling and edges.
Install a base: a weed barrier and compacted sand or gravel base improves longevity.
Edge it right: metal edging or pressure-treated lumber keeps gravel from spreading.

Building a pea gravel patio is a budget-friendly way to add outdoor living space. The first step is knowing exactly how much material to order. This guide walks you through measuring, calculating, and buying the right amount of pea gravel, plus tips to avoid costly mistakes.

How much pea gravel do I need per square foot for a patio?

The amount of pea gravel you need depends on the depth of your patio and the total square footage.

For a 4-inch depth, you need about 0.033 cubic yards per square foot (or 1 cubic yard covers about 30 square feet).
Use our pea gravel calculator to get a precise estimate for your project.
One cubic yard of pea gravel typically weighs around 1.4 tons.
Common patio sizes: a 10x10 ft patio (100 sq ft) needs 1.23 cubic yards; a 12x12 ft patio (144 sq ft) needs 1.77 cubic yards.
Always round up to ensure you have enough material for hidden dips or uneven ground.

How do I calculate pea gravel for a patio myself?

Calculating pea gravel volume is straightforward using a simple formula.

Measure the length and width of your patio area in feet, then multiply for square footage.
Decide on the depth in inches. For patios, 4 inches is standard, but you may go to 6 inches for heavy use.
Convert depth to feet: depth in feet = depth in inches ÷ 12.
Calculate cubic feet: square footage × depth in feet.
Convert to cubic yards: divide cubic feet by 27.
Add 5–10% extra for compaction, waste, and irregular shapes. Our pea gravel calculator does the math for you.

What does a pea gravel patio cost in 2025?

Pea gravel is one of the most affordable patio materials, with costs varying by region and quantity.

Pea gravel itself costs $40 to $80 per cubic yard as of April 2025. Delivery fees may add $50 to $150 depending on distance.
For a 200 sq ft patio at 4 inches deep (about 2.5 cubic yards), material costs range from $100 to $200.
Add landscape fabric (about $30 to $50 for a 200 sq ft patio) and metal edging (around $1 to $3 per linear foot).
DIY labor costs nothing, but hiring a pro for installation can run $10 to $20 per square foot including materials.
Use our pea gravel calculator to estimate your total volume and then figure costs based on local prices.

What are common mistakes when installing a pea gravel patio?

Many DIYers make avoidable errors that shorten their patio's life or waste money.

Skimping on depth: less than 3 inches leads to bare spots and poor drainage.
Skipping the weed barrier: without landscape fabric, weeds grow through and ruin the look.
No edging: pea gravel migrates without metal, plastic, or wood edging to contain it.
Forgetting compaction: pea gravel settles over time; compact it in 2-inch lifts for a firm surface.
Miscalculating volume: always order 5–10% extra to account for uneven ground and spillage. See our gravel calculator for other gravel types.

Pea gravel vs. crushed stone vs. decomposed granite for patios

Choosing the right loose material affects comfort, cost, and maintenance.

Pea gravel: smooth, rounded stones that are comfortable underfoot but can shift. Ideal for bare feet.
Crushed stone: angular, packs tightly for a solid base but can be sharp and dusty. Use our crushed stone calculator for estimates.
Decomposed granite: fines and small pieces that compact like soil, forming a semi-solid surface. Prone to erosion.
For a stable patio, consider a crushed stone base (2–3 inches) topped with 2 inches of pea gravel.
Pea gravel costs about $40–$80/cy, crushed stone $30–$60/cy, and decomposed granite $50–$90/cy as of April 2025.

Should I install a pea gravel patio myself or hire a pro?

Small to medium patios are a practical DIY project, but larger or complex designs may need a crew.

DIY is best for patios under 200 sq ft with good access and level ground. You'll save on labor.
Hire a professional if you need heavy excavation, drainage solutions, or custom shapes.
Pros can also source and deliver materials efficiently, sometimes at lower cost.
For a 400 sq ft patio, DIY might take a weekend and cost $300–$600 in materials; a pro might charge $4,000–$8,000 including everything.
Before digging, call 811 to check for underground utilities. Confirm codes with your local building department.

Comfort	Smooth, comfortable (Pea Gravel)	Angular, rough (Crushed Stone)
Cost per sq ft	$1.50 to $3.00 (DIY materials)	$10 to $20 (Pro installed)
Stability	Moderate, shifts	Good, compacts well
Maintenance	Occasional raking	Minimal if compacted

Questions this page answers

How deep should a pea gravel patio be?

A 4-inch depth is standard for a stable surface. For heavy traffic or areas with poor drainage, go up to 6 inches. Compact in layers.

Can I put pea gravel directly on dirt?

You can, but it's better to lay landscape fabric first to block weeds and prevent gravel from mixing with soil. A sand or crushed stone base also improves drainage and stability.

How many bags of pea gravel do I need?

A 0.5 cubic foot bag covers about 1.5 square feet at 4 inches deep. For 100 sq ft, you'd need about 67 bags. It's cheaper to buy in bulk.

Does pea gravel need to be compacted?

Yes, compacting in 2-inch layers creates a firm surface and reduces shifting. Use a hand tamper for small areas, or a plate compactor for larger patios.

How do I keep pea gravel in place?

Install edging (metal, plastic, or pressure-treated wood) around the perimeter. Also, a slight slope (1/4 inch per foot) helps water drain and keeps gravel from washing away.

Is pea gravel good for dogs?

Yes, it's comfortable on paws and doesn't get hot like concrete. But some dogs may try to eat the small stones, so watch for that.

Does a pea gravel patio add value to a home?

It can improve curb appeal and outdoor living space, but it's not a permanent improvement like a concrete slab. It's a cost-effective way to enhance your yard.

How often should I add new pea gravel?

Plan to top up with a thin layer every 1-2 years as the original gravel settles or gets displaced. A light raking also refreshes the surface.

To recap, a 100-square-foot pea gravel patio at 4 inches deep requires about 1.23 cubic yards of material. Always add 5-10% extra and use our pea gravel calculator to plan your project accurately.