How Much #57 Stone for a 14x50 Driveway?

A 14 by 50 foot driveway is 700 square feet. How much #57 stone for a 14x50 driveway depends on depth: at 4 inches it is about 8.64 cubic yards or 11.7 tons. Suppliers usually sell by the ton, so the tonnage is the number to give them.

Volume and tonnage calculator →

The math for a 14x50 driveway

Area: 14 × 50 = 700 sq ft.
Depth in feet: 4 ÷ 12 = 0.333 ft.
Cubic feet: 700 × 0.333 = 233.3 cu ft.
Cubic yards: ÷ 27 = 8.64 yd³.
Tons: × 1.35 = 11.7 tons.

The volume and tonnage calculator does this for any size.

#57 stone needed by depth

Depth	Cubic yards	Tons (approx.)	Tons +10%
2 in	4.32	5.8	6.4
3 in	6.48	8.8	9.6
4 in	8.64	11.7	12.8
6 in	12.96	17.5	19.3

About #57 stone

#57 stone is a clean crushed stone in roughly the 1/2 to 1 inch range with very few fines. It drains fast, which suits drainage layers and the top of a gravel drive, but it does not pack into a hard crust by itself. If the yard sells by the cubic yard instead of the ton, use the cubic-yard column directly.

Preparing the driveway

Strip sod and soft topsoil, grade for drainage and compact the subgrade before any stone goes down. Gravel drives last longer with a compacted base layer under the top stone and a slight crown so water runs off. For car and truck traffic, the depths in the table above are a reasonable starting range.

Ordering tips

Round up. Compaction and uneven ground eat material. Adding about 10 percent is common.
Delivery size. 12.8 tons fits in a single typical dump truck load; small loads may carry a delivery fee. See how many tons of gravel in a dump truck.
Bulk vs bags. At this size bulk delivery is usually the practical choice.
Where it drops. Have the truck dump as close to the driveway as firm ground allows.

Good and poor uses for #57 stone

Good uses:

French drains and drainage layers
The top course of a gravel driveway
Under sheds where water needs to drain away

Poor fit for:

A standalone base, since it does not pack hard without fines
Paver setting beds
Walk paths meant for strollers or wheelchairs

Quick reference numbers

Per inch over 100 sq ft: about 0.42 tons of #57 stone (0.31 cubic yards).
Per inch over 1,000 sq ft: about 4.2 tons.
Another size for comparison: a 8x16 area at 2 inches takes about 1.1 tons.
Weight used here: about 1.35 tons per cubic yard.

Common estimating mistakes

Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
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 #57 stone for a 14x50 driveway?

About 11.7 tons at 4 inches deep, or 12.8 tons with 10 percent extra.

How many cubic yards is a 14x50 driveway at 4 inches?

About 8.64 cubic yards.

How much does a cubic yard of #57 stone weigh?

Usually around 1.3 to 1.45 tons, depending on stone size, fines and moisture.

How deep should #57 stone be for a driveway?

The table above shows 2 to 6 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.

How many square feet is 14x50?

700 square feet.

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