How Much Pea Gravel for 100 Square Feet?
How much pea gravel for 100 square feet depends on depth. At 3 inches you need about 0.93 cubic yards, roughly 1.3 tons at 1.4 tons per yard. At 2 inches the order drops to 0.9 tons.
Volume and tonnage calculator →Pea gravel for 100 sq ft by depth
| Depth | Cubic yards | Tons | Tons +10% |
|---|---|---|---|
| 2 in | 0.62 | 0.9 | 1.0 |
| 3 in | 0.93 | 1.3 | 1.4 |
| 4 in | 1.23 | 1.7 | 1.9 |
Working it out
- 100 sq ft × (3 ÷ 12) ft = 25.0 cubic feet.
- ÷ 27 = 0.93 cubic yards.
- × 1.4 tons per yard = 1.3 tons.
About pea gravel
Pea gravel is small, rounded stone, usually around 3/8 inch. It is comfortable to walk on and drains well, but it shifts under car tires and needs a solid edge to stay put. Typical weight: 1.3 to 1.5 tons per cubic yard.
Before the truck comes
- Measure odd shapes in pieces. Split curves and L-shapes into rectangles and add them.
- Add a margin. About 10 percent covers compaction and low spots.
- Bulk or bags. This is small enough that bags may compete with a bulk minimum; price both.
- Prep first. Remove sod, compact the subgrade and set edging before the stone arrives.
Use the volume and tonnage calculator for any other size.
Where pea gravel fits
Best suited to:
- 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 3 inches takes about 5.8 tons.
- Weight used here: about 1.4 tons per cubic yard.
Mistakes that throw off the order
- Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.
- Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
- Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
- Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
Questions people ask
How many tons of pea gravel for 100 square feet?
About 1.3 tons at 3 inches deep.
How many cubic yards of pea gravel for 100 square feet?
About 0.93 yards at 3 inches.
How much pea gravel for 100 square feet at 2 inches?
About 0.9 tons, or 0.62 cubic yards.
How much does a yard of pea gravel weigh?
About 1.3 to 1.5 tons.
Should I add extra?
Yes, about 10 percent is a common allowance.
Related guides
- How Much Does a Ton of Gravel Cover? Depth Chart
- Tons to Cubic Yards for Gravel: Conversion Chart
- How Much Does a Ton of Gravel Cover? Depth Chart
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