Gravel size gradation chart

Which size gravel stone to choose


The chart below is a guide to the stone size range of our gravel and decorative products:

Size Stone Pea stone Screenings
US MM #1 #2 #4 #5 #57 #67 #7 #8 #89 #9 #10
4" 101.6 .
3 1/2" 88.9 X
3" 76.2 X .
2 1/2" 63.5 X X
2" 50.8 X X .
1 1/2" 38.1 .. X X . .
1" 25.4 . .. X X X .
3/4" 19.1 . .. X X X .
1/2" 12.7 .. .. X X X . .
3/8" 9.5 . . X X X X X . .
3/16" 4.8 . . . X X X X
3/32" 2.4 . X X X
1/16" - 0 0-1.6 . .. .. X
(X) = Stone largely consists of this size
(..) = Stone can consist of up to 15% of this size
(.) = Stone can consist of up to 10% of this size
**Each Stone gradation can contain up to 10% upper and lower grades and some fine material (sand).


In the upper range of our stone sizing -- 4” down to 2”
This covers products such as Rip Raps, Large Beach Pebbles, and Red Rock. Their weight makes them a sturdy and excellent decorative stone, especially for creating borders and outlining gardens and driveways.

In the mid range of our stone sizing -- 2” down to 1/2”
This covers products such as Granite and Limestone Gravel, along with River Rock and Recycled Crushed Concrete -- all excellent choices for driveways, with similar functional properties and differing aesthetics.

In the lower range of our stone sizing -- 1/2” down to fines (industry term for sand, stone dust and tiny particles):
Products in this range are notably more compactible and suited for creating a base layer -- products such as Crusher Run, Screenings, Sand and Soil.

For support of heavy vehicles -- choose our #3 or #4 stone
For standard driveways -- choose our #57 or #67
For more decorative driveways -- choose our 1/2” to 2” river gravel
For driveways / paths more comfortable to walk upon -- choose our #89