1 Inch Gravel Calculator

What size is it?

ASTM No. 1 is 3-1/2 to 1-1/2 inches. A search for 1 inch gravel is looking for a smaller stone. The closest numbered size is ASTM D448 No. 5, nominal 1 to 1/2 inch. #57 still passes a 1 inch sieve, but more of it falls through 1/2 inch, and the #57 page already covers that product. This page does not replace it.

No. 5 sieve bounds used here: 100 percent passing 1-1/2 inch, 90–100 percent passing 1 inch, 20–55 percent passing 3/4 inch, 0–10 percent passing 1/2 inch, 0–5 percent passing 3/8 inch. FHWA-HRT-15-034 Table 4 lists No. 57 as 95–100 percent passing 1 inch and 25–60 percent passing 1/2 inch.

Weight per cubic yard

One cubic yard at 1,600 kg/m³ is 1.35 short tons, 2696.89 lb, and 1.22 tonnes. One short ton is 0.74 cubic yards. That matches #57, clean 3/4, and the sand default on this site. The tons converter uses the same 1,600 for the 1 inch row.

Coverage

One cubic yard covers 324 square feet at 1 inch and 162 square feet at 2 inches. A 10 by 10 foot area is 100 square feet, so 2 inches is 100 ÷ 162 = 0.62 cubic yards. The foot line of that layer is 16.67.

Worked example

Leave length and width at 10 ft, depth at 2 in, and density at 1600. Finished cubic yards read 0.62. Order cubic yards read 0.62. Order short tons read 0.83. Order tonnes read 0.76. The formula line shows 16.67 ft³, 0.47 m³, allowance 0.00 percent, and 0.83 short tons.

Frequently asked questions

What size is 1 inch gravel?

A product sold as 1 inch gravel is commonly the stone that passes a 1 inch sieve and sits on a 1/2 inch sieve. That lines up with ASTM D448 Size No. 5, nominal 1 to 1/2 inch: 100 percent passing 1-1/2 inch, 90–100 percent passing 1 inch, 20–55 percent passing 3/4 inch, 0–10 percent passing 1/2 inch, and 0–5 percent passing 3/8 inch. It is not ASTM No. 1. No. 1 is 3-1/2 to 1-1/2 inch.

Is 1 inch gravel the same as #57?

They overlap and they are not the same spec. #57, AASHTO M 43 / ASTM D448, is published in FHWA-HRT-15-034 Table 4 as 95–100 percent passing 1 inch, 25–60 percent passing 1/2 inch, 0–10 percent passing the No. 4 sieve, and 0–5 percent passing the No. 8. No. 5 is the 1 to 1/2 inch size above. If the ticket says #57, use the #57 calculator. Both pages start at 1,600 kg/m³, so a yard weighs the same until you change the density.

How much does a yard of 1 inch gravel weigh?

The start is 1,600 kg/m³, Caterpillar’s loose crushed-stone figure. One cubic yard is 1.35 short tons, 2696.89 lb, and 1.22 tonnes. One short ton is 0.74 cubic yards. Caterpillar pairs 1,600 kg/m³ with 2,700 lb per yard. This site’s conversion prints 2696.89 lb. The 3.11 lb gap is that published pair versus 0.9144³ cubic meters per yard and 907.18474 kg per short ton.

How much 1 inch gravel for 10 by 10 feet at 2 inches?

The boxes open on that example. Finished and order volume are both 0.62 cubic yards, 16.67 cubic feet, and 0.47 cubic meters. At 1,600 kg/m³ the weight is 0.83 short tons and 0.76 tonnes. One cubic yard covers 162 square feet at 2 inches, and 100 ÷ 162 is 0.62 yards.

How deep should 1 inch gravel be?

Two inches is a decorative or path depth, which is the example. A driveway needs a thicker base of dense-graded stone such as 304 or 411, with the 1 inch rock only as a surface if you use it that way. This calculator is one rectangular layer. It does not add a compaction percent.

What about pea gravel and 3/4 inch stone?

Pea gravel is rounded and about 1/8 to 3/8 inch. Clean 3/4 inch stone is the next size down from a true 1 inch product, and that page also starts at 1,600 kg/m³. Use those calculators when the bag says pea or 3/4. Use No. 2 when the stone is 2-1/2 to 1-1/2 inch.

Can I switch the units?

Yes. Each side has feet, inches, yards, meters, and centimeters, and depth adds millimeters. A 3.05 m by 3.05 m area at 5.08 cm is the same 0.62 cubic yards and 0.83 short tons at 1,600 kg/m³.