How Much Does 40 Tons of Pea Gravel Cover?
How much does 40 tons of pea gravel cover depends on how deep you spread it. At about 1.4 tons per cubic yard, 40 tons is roughly 28.6 cubic yards. Spread 3 inches deep, that covers about 3,086 square feet. Halve the depth and you roughly double the area.
Volume and tonnage calculator →How the coverage is figured
- Tons to cubic yards: 40 ÷ 1.4 = 28.6 yd³.
- Cubic yards to cubic feet: × 27 = 771 cu ft.
- Divide by depth in feet: at 3 inches (0.250 ft), 771 ÷ 0.250 = 3,086 sq ft.
Coverage of 40 tons at different depths
| Depth | Square feet covered | Square yards |
|---|---|---|
| 2 in | 4,629 | 514 |
| 3 in | 3,086 | 343 |
| 4 in | 2,314 | 257 |
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. Weight runs about 1.3 to 1.5 tons per cubic yard, so treat the table as a planning range rather than an exact figure.
Putting 40 tons to use
For delivery, 40 tons means multiple trips or a larger truck. Ask the supplier how they will split it. Spread from the pile with a loader, skid steer or wheelbarrow, then rake to depth before compacting if the material calls for it.
- Check depth as you go. Stakes marked at the target depth help keep the spread even.
- Expect some loss. Compaction and uneven ground use more than the flat-math figure. Keep about 10 percent in reserve.
- Ask about moisture. Wet material weighs more, so a ton of it covers less.
To run your own numbers, use the volume and tonnage calculator.
Good and poor uses for pea gravel
Best suited to:
- Patios, walkways and dog runs
- Play areas with proper depth and edging
- Drainage around foundations when sized properly
Think twice 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 8x16 area at 3 inches takes about 1.7 tons.
- Weight used here: about 1.4 tons per cubic yard.
Mistakes that throw off the order
- Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
- Ordering exactly the math. Uneven ground and spillage nearly always need a little more than the flat calculation.
- Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
- Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
Questions people ask
How many cubic yards is 40 tons of pea gravel?
About 28.6 cubic yards at 1.4 tons per yard.
How many square feet does 40 tons of pea gravel cover at 3 inches?
About 3,086 square feet.
How many square feet does 40 tons cover at 2 inches?
About 4,629 square feet.
How much does a yard of pea gravel weigh?
About 1.3 to 1.5 tons.
Will 40 tons fit in one truck?
It depends on the truck. Single-axle dump trucks often carry under 10 tons and tandems around 13 to 16; your supplier will know their limits.
Related guides
- How Much Does a Ton of Gravel Cover? Depth Chart
- Tons to Cubic Yards for Gravel: Conversion Chart
- How Many Tons of Gravel in a Dump Truck? Loads and Coverage
- How Much Does 30 Tons of Pea Gravel Cover?
- How Much Does 35 Tons of Pea Gravel Cover?
As an Amazon Associate, AsphaltTons.com earns from qualifying purchases. Product links below are sponsored.