Bags of Pea Gravel for a 16x10 Patio

How many bags of pea gravel for a 16x10 patio: at 3 inches deep you need about 40.0 cubic feet, which is 80 bags of the common 0.5 cubic foot size. If your store sells pea gravel in 50-pound bags instead, figure about 83 bags, since pea gravel weighs roughly 104 pounds per cubic foot.

Volume and tonnage calculator →

Bag count by depth

Depth	Cubic feet	0.5 cu ft bags	50 lb bags (approx.)
1 in	13.3	27	28
2 in	26.7	54	56
3 in	40.0	80	83
4 in	53.3	107	111

How to figure it

Area: 16 × 10 = 160 sq ft.
Volume: 160 × (3 ÷ 12) = 40.0 cu ft.
Bags: 40.0 ÷ 0.5 = 80 bags (round up).

Bags or bulk?

A cubic yard is 27 cubic feet, so 40.0 cubic feet is 1.48 yards, about 2.1 tons. Past about a yard, bulk is usually less work and often less money. Compare the bag price × 80 against a bulk quote for 2.3 tons delivered.

About pea gravel

Because pea gravel is round, it never fully locks. Keep depths modest on walkways and patios so it does not feel like walking on a beach, and use edging.

Install tips for a patio

Dig and level. Remove sod and set the base slightly below the surrounding grade.
Edge it. Steel, plastic or stone edging keeps material in place.
Spread in layers. Rake to depth, then rake smooth; rounded stone will not compact.
Buy a few extra. Grab 5 to 10 percent more bags for settling and touch-ups.

The volume and tonnage calculator handles other sizes and depths.

When to choose pea gravel

Works well for:

Patios, walkways and dog runs
Play areas with proper depth and edging
Drainage around foundations when sized properly

Poor fit for:

Driveways and steep paths, where it rolls and ruts
Under pavers as a base
Areas without edging

Quick reference numbers

Per inch over 100 sq ft: about 0.43 tons of pea gravel (0.31 cubic yards).
Per inch over 1,000 sq ft: about 4.3 tons.
Another size for comparison: a 15x30 area at 4 inches takes about 7.8 tons.
Weight used here: about 1.4 tons per cubic yard.

Mistakes that throw off the order

Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.

Questions people ask

How many bags of pea gravel for a 16x10 patio?

About 80 bags of 0.5 cubic feet at 3 inches deep.

How many 50 lb bags of pea gravel for 16x10?

About 83 bags at 3 inches.

How many 0.5 cubic foot bags are in a cubic yard?

54 bags.

How many cubic feet is a 16x10 patio at 3 inches?

About 40.0 cubic feet.

When does bulk make more sense?

Usually once the job passes about a cubic yard, or when you would need more than a few car trips.

As an Amazon Associate, AsphaltTons.com earns from qualifying purchases. Product links below are sponsored.