How Much Pea Gravel Do I Need? Easy Coverage Chart

If you are asking how much pea gravel do I need, you are probably planning a path, a patio, a dog run or a play area. Pea gravel is small, smooth and round, usually about 3/8 inch, which makes it comfortable underfoot and easy to rake. It is also one of the cheapest decorative stones. The only tricky part is ordering the right amount, so this guide gives you the formula, a coverage chart and real examples.

How to Work Out How Much Pea Gravel You Need

• Measure the area in feet. For odd shapes, split it into rectangles and circles and add them up.
• Pick a depth from the table below and divide inches by 12 to get feet.
• Multiply length x width x depth to get cubic feet.
• Divide by 27 for cubic yards.
• Multiply by 1.4 for tons, or multiply cubic feet by 2 for 0.5 cubic foot bags.
• Add 10% for settling and spills.

Our free pea gravel calculator does this in seconds. Choose Pea gravel as the material and it shows yards, tons, bags, bulk bags and wheelbarrow loads.

How Deep Should Pea Gravel Be?

Project	Depth	Notes
Garden path or walkway	2 to 3 in	Thicker than 3 in feels loose underfoot
Patio or seating area	3 to 4 in	Use a compacted base under it
Dog run	3 to 4 in	Easy to rinse and rake clean
Decorative bed	2 to 3 in	Lay over landscape fabric
Children’s play area	About 9 in	Acts as a cushioning surface

For play areas, US safety guidance from the Consumer Product Safety Commission generally calls for about 9 inches of loose-fill material under equipment. Check the guidance for your equipment height before you order.

Pea Gravel Coverage Chart

This chart shows how much pea gravel covers 100 square feet, before the 10% extra:

Depth	Cubic yards	Tons	0.5 cu ft bags
2 in	0.62	0.9	33
3 in	0.93	1.3	50
4 in	1.23	1.7	67

Turned the other way, one ton of pea gravel covers about 116 sq ft at 2 inches, 77 sq ft at 3 inches and 58 sq ft at 4 inches. One cubic yard covers about 162, 108 and 81 sq ft at the same depths.

Real Examples: Paths, Patios and Play Areas

Project	Size and depth	Yards	Tons	Bags
Garden path	30 x 3 ft, 2 in	0.56	0.8	30
Patio	10 x 10 ft, 3 in	0.93	1.3	50
Dog run	20 x 6 ft, 3 in	1.1	1.6	60
Play area	12 x 12 ft, 9 in	4.0	5.6	Bulk load

Bags or Bulk Delivery?

• Under about 50 bags: bags from a garden center are easiest to carry and store.
• Around half a ton to 3 tons: bulk bags are tidy and can be dropped at the curb.
• Over about 3 tons: a loose load from a landscape supply yard is usually the cheapest per ton.

A 0.5 cubic foot bag of pea gravel weighs about 50 lb, so 50 bags is well over a ton of lifting. For anything bigger than a small patio, bulk is usually worth it.

Tips for Laying Pea Gravel

• Use edging. Steel, brick or timber edging keeps the round stones from spreading into the lawn.
• Lay landscape fabric under the gravel to stop weeds and stop the stones sinking into soil.
• Add a firm base under patios: 2 to 3 inches of compacted crusher run stops chairs sinking.
• Do not overfill. More than about 3 inches on a path feels like walking on sand.
• Keep it off driveways. Round stones roll under tyres. See which gravel is best for driveway options, and our guide to how much gravel for a driveway.

Get Your Exact Amount

Now you know how much pea gravel you need for a typical job. For your exact space, enter the size and depth in the calculator and pick Pea gravel. It handles odd shapes and gives the answer in yards, tons and bags.