Slate Sizing Chart

Size

Number of Pieces Per Square

Square Inches Exposed Per Piece

Square Feet Exposed Per Piece

12x 6
12x 7
12x 8
12x 9
12x10
12x11
12x12

533.3
457.1
400.0
355.6
320.0
290.9
266.7

27.0
31.5
36.0
40.5
45.0
49.5
54.0

.188
.219
.250
.281
.313
.344
.375

14x 7
14x 8
14x 9
14x10
14x11
14x12
14x14

374.0
327.3
290.0
261.8
238.0
218.2
187.0

38.5
44.0
49.5
55.0
60.5
66.0
77.0

.267
.306
.344
.382
.420
.458
.535

16x 8
16x 9
16x10
16x11
16x12
16x14

276.9
246.2
221.5
201.4
184.6
158.2

52.0
58.5
65.0
71.5
78.0
91.0

.361
.406
.451
.497
.542
.632

18x 9
18x10
18x11
18x12
18x14

213.3
192.0
174.5
160.0
137.1

67.5
75.0
82.5
90.0
105.5

.469
.521
.573
.625
.729

20x10
20x11
20x12
20x14

169.4
154.0
141.2
121.0

85.0
93.5
102.0
119.0

.590
.649
.708
.826

22x11
22x12
22x14

137.8
126.3
108.3

104.5
114.0
133.0

.726
.792
.924

24x12
24x14

114.3
98.0

126.0
147.0

.875
1.021