Compost Calculator

If you have difficulty determining how much compost you need to order, base your estimate on average amounts recommended per square foot, such as those suggested in the Rodale encyclopedia. Order 200 pounds per 1,000 square feet of the garden when thin layers are required, and 400 pounds for deeper layers. The bare minimum of the recommended compost application is 50 pounds per 1,000 square feet.

1 Cubic Yard of Compost Covers

SQUARE FEET

AT

DEPTH

324 sq. ft.

at

1″ depth

162 sq. ft.

at

2″ depth

108 sq. ft.

at

3″ depth

81 sq. ft.

at

4″ depth

65 sq. ft.

at

5″ depth

54 sq. ft.

at

6″ depth

 

Cubic Yds. Required to Cover
1,000 sq ft

LAYER (INCHES)

GREATER THAN

CUBIC YARDS

1/4 inch layer

0.75yd3

1/2 inch layer

1.5yd3

1 inch layer

3.0yd3

1 1/2 inch layer

4.5yd3

2 inch layer

6.0yd3

2 1/2 inch layer

7.5yd3

3 inch layer

9.0yd3

 

Cubic Yds. Required for
Various Depths of Coverage

SQUARE FEET

1/32″

1/16″

1/8″

1/4″

1″

2″

3″

1,000

0.10

0.19

0.39

0.78

3

6

9

5,000

0.48

0.97

1.94

3.88

15.5

31

46.5

10,000

0.97

1.94

3.88

7.75

31

62

93

43,560 (1 acre)

4.22

8.44

16.88

33.76

135

270

405

100,000

9.69

19.38

38.75

77.5

310

620

930

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