CALCULATOR, Conversion & Coverage Charts

The following calculator will give you a guideline of the yardage that you may need for your project. Simply measure the coverage area (in feet) that you are planning on treating, and determine the depth in inches.

Then input the data into the calculator and you will receive your yardage quantities. It may be necessary to incorporate several areas in the event your project is more complex to get a sum of the total yardage.

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Enter your dimensions



This chart allows you to convert yardage to tons

Once you’re done doing that you will have a clear easy idea of how much material you need for your job; give us a call if you have questions. We can help you arrange delivery and answer any other questions you may have.

Material Coverage & Conversion Chart

All rock products, rip rap, boulders and soils are sold by the ton.

All mulches and plant mixes are sold by cubic yard.

Square feet to Cubic Yard conversion

 L x W = Sq. Ft.

Inches deep ÷ 12 = Depth

 L x W x D ÷ 27 = CY

Quick Conversion Factors Ton/CY

 Rock                     1.37

Crusher Fines    1.9 Compacted

 1.6 Loose

Infield Mix          1.75 Compacted

1.25 Loose

 Rip Rap                1.65

Class6 Base         1. 75 compacted


1 Ton/Cy of the material listed below at a 3″ depth will cover the following square footage (all numbers are approx.)

¾” (#67) crushed gravel or ¾” round river gravel rock      77 Sq. Ft.

1-1/2” Rock                                                                                         77 Sq. Ft.

¾” Class VI  base course (road base)                                        63 Sq. Ft.

Crusher Fines                                                                                    67 Sq. Ft.

 Concrete Sand                                                                                 86 Sq. Ft.

Squeege                                                                                              83 Sq. Ft.

Pea Gravel                                                                                          83 Sq. Ft.

Topsoil (amended, other)                            approx. 100 Sq. Ft.

Rip Rap Coverage

L Riprap (D/50 avg 9”) 1 ton will cover 23 square feet using D50 = 9″

M Riprap (D/50 avg 12”) 1 ton will cover 17 square feet using D50 = 12″

H Riprap (D/50 avg 18”) 1 ton will cover 11 square feet using D50 = 18″

VH Riprap ( D/50 avg 24”) 1 ton will cover 8 square feet using D50 = 24″

RIVER COBBLE Conversion for 1 ton

 2×4″ Cobble 65 Sq. Ft.

4×8″ Cobble 60 Sq. Ft.

8×20” 10 -15 Sq. Ft.

 River Boulders and Shot Rock Boulders

 3’x3’x3′ approx. 1 ton, 143 to 168 lbs./Sq. Ft.

Mulches and Bark

 One CY Covers 160 Sq. Ft. 2″ Deep

100 Sq. Ft. 3″ Deep 80 Sq. Ft. 4″ Deep

Topsoils and composts Weight per CY /CF

85/15 Sand/Peat mix 77.8 lbs. per C.F.

66/33 Sand/Peat mix 80-90 lbs. per C.F.

 Compost 1100 lbs. per CY