Measurements taken in square inches can be converted into decimals of a square foot by dividing the number of square inches by 144, which is the number of square inches contained in a square foot.

Example

Express 20 square inches as a decimal of a square foot. Solution - 20 square inches=20/144=20 divided by 144=.138. Answer.

Square inches expressed as decimals of a square foot can be found in Table LXIV.

Table LXIV - Square Inches In Decimals Of A Square Foot

Square Inch

Square Foot

Square Inch

Square Foot

Square Inch

Square Foot

Square Inch

Square Foot

1

.00694

15

.10416

29

.20138

43

.29861

2

.01388

16

.11111

30

.20833

44

.30555

3

.02083

17

.11805

31

.21527

45

.31249

4

.02777

18

.12500

32

.22222

46

.31944

5

.03472

19

.13194

33

.22916

47

.32638

6

.04166

20

.13888

34

.23611

48

.33333

7

.04861

21

.14583

35

.24305

49

.34027

8

.05555

22

.15277

36

.25000

50

.34722

9

.06250

23

.15972

37

.25694

51

.35416

10

.06944

24

.16666

38

.26388

52

.36111

11

.07638

25

.17361

39

.27083

53

.36805

12

.08333

26

.18055

40

.27777

54

.37500

13

.09027

27

.18750

41

.28472

55

.38194

14

.09722

28

.19444

42

.29166

56

.38888

Table LXIV - Continued

Square Inch

Square Foot

Square Inch

Square Foot

Square Inch

Square Foot

Square Inch

Square Foot

57

.39583

79

.54861

101

.70138

123

.85416

58

.40277

80

.55555

102

.70833

124

.86111

59

.40972

81

.56249

103

.71527

125

.86805

60

.41666

82

.56944

104

.72222

126

.87500

61

.42361

83

.57638

105

.72916

127

.88194

62

.43055

84

.58333

106

.73611

128

.88888

63

.43750

85

.59027

107

.74305

129

.89583

64

.44444

86

.59722

108

.75000

130

.90277

65

.45138

87

.60416

109

.75694

131

.90972

66

.45833

88

.61111

110

.76388

132

.91666

67

.46527

89

.61805

111

.77083

133

.92361

68

.47222

90

.62500

112

.77777

134

.93055

69

.47916

91

.63194

113

.78472

135

.93750

70

.48611

92

.63888

114

.79166

136

.94444

71

.49305

93

.64583

115

.79861

137

.95138

72

.50000

94

.65277

116

.80555

138

.95833

73

.50694

95

.65972

117

.81249

139

.96527

74

.51388

96

.66666

118

.81944

140

.97222

75

.52083

97

.67361

119

.82638

141

.97916

76

.52777

98

.68055

120

.83333

142

.98611

77

.53472

99

.68750

121

.84027

143

.99305

78

.54166

100

.69444

122

.84722

144

1.00000

To reduce decimals of a square foot to square inches, multiply the decimal by 144.

Example

Reduce .1388 of a foot to square inches. Solution-.1388X144=20 square inches nearly. Answer.