1/2″ = 
480 square feet per ton 
1″ = 
240 square feet per ton 
1 1/2″ = 
160 square feet per ton 
2″ = 
120 square feet per ton 
2 1/2″ = 
96 square feet per ton 
3″ = 
80 square feet per ton 
3 1/2″ = 
68 square feet per ton 
4″ = 
60 square feet per ton 
5″ = 
48 square feet per ton 
6″ = 
40 square feet per ton 
7″ = 
35 square feet per ton 
8″ = 
30 square feet per ton 
9″ = 
27 square feet per ton 
10″ = 
24 square feet per ton 
1 1/2″ – 3″ River Rock = 90 sq. ft. per yard 
3″ – 8″ River Rock = 50 sq. ft. per ton 
6″ & up River Rock = 25 sq. ft. per ton 

MULCH 
5″ Thick = 
64 square feet per yard 
4″ Thick = 
80 square feet per yard 
3″ Thick = 
107 square feet per yard 
2″ Thick = 
160 square feet per yard 
1″ Thick = 
320 square feet per yard 

1 ton = 20 cubic feet 
1 yard = 27 cubic feet 
1.33 tons per cubic yard 
2700 lbs. per cubic yard 
2000 lbs. per ton 
Cubic feet / 27 x 1.33 = tons 
Cubic yards x 1.33 = tons 
Sq. yds x 9 = sq. ft. / thickness = ton 
Square feet / 120 = tons 
43560 square fet per acre 
Sq. ft = length x width 
Sq. ft of triange = 1/2 length x width 
Sq. ft of circle = 3.14 x radius squared 
1 1/2 tons = 1 cubic yard of ABC 

5 Gallon Bucket = approx. 60 lbs. 
CINDERS 

4″ Thick = 
400 square feet per yard 
3″ Thick = 
200 square feet per yard 
2″ Thick = 
133 square feet per yard 
1″ Thick = 
100 square feet per yard 
