Machinery's Handbook, 31st Edition
Square Measure and Conversion Factors Table 17a. Square Inches to Square Centimeters Conversion
2851
inch 2
cm 2
inch 2
cm 2
inch 2
cm 2
inch 2
cm 2
inch 2
cm 2
100 200 300 400 500 600 700 800 900
645.16 1,290.32 1,935.48 2,580.64 3,225.80 30,870.96 4,516.12 5,161.28 5,806.44
10 20 30 40 50 60 70 80
64.516 129.032 193.548 258.064 322.58 387.096 451.612 516.128 580.644 645.16
1 2 3 4 5 6 7 8 9
6.4516 12.9032 19.3548 25.8064 32.258 38.7096 45.1612 51.6128 58.0644 64.516
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
0.64516 1.29032 1.93548 2.58064 3.2258 3.87096 4.51612 5.16128 5.80644 6.4516
0.01 0.064516 0.02 0.129032 0.03 0.135489 0.04 0.258064 0.05 0.32258 0.06 0.387096 0.07 0.451612 0.08 0.516128 0.09 0.580644 0.10 0.64516
90 100
1,000 6,451.60
10
Based on 1 inch = 2.54 centimeters, exactly; 1 inch 2 = 6.4516 cm 2 , exactly.
Table 17b. Square Centimeters to Square Inches Conversion
cm 2 100 200 300 400 500 600 700 800 900
inch 2
cm 2
inch 2 1.550 3.100 4.650 6.200 7.750 9.300 10.850 12.400 13.950 15.500
cm 2
inch 2 0.155 0.310 0.465 0.620 0.75 0.930 1.085 1.240 1.395 1.550
cm 2
inch 2 0.016 0.031 0.047 0.062 0.078 0.093 0.109 0.124 0.140 0.155
cm 2 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10
inch 2 0.002 0.003 0.005 0.006 0.008 0.009 0.011 0.012 0.014 0.016 0.009 0.019 0.028 0.037 0.046 0.056 0.065 0.074 0.084 0.093 m 2
15.500 31,000 46.500 62.000 77.500 93.000 108.500 124.000 139.500 155.000
10 20 30 40 50 60 70 80
1 2 3 4 5 6 7 8 9
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
90 100
1,000
10
Based on 1 inch = 2.54 centimeters, exactly; 1 cm 2 = 0.1550003 inch 2 .
Table 18a. Square Feet to Square Meters Conversion
ft 2
m 2
ft 2
m 2
ft 2 10 20 30 40 50 60 70 80 90
m 2
ft 2
m 2
ft 2
1,000
92.903
100 200 300 400 500 600 700 800
9.290 18.581 27.871 37.161 46.452 55.742 65.032 74.322 83.613 92.903
0.929 1.858 2.787 3.716 4.645 5.574 6.503 7.432 8.361 9.290
1 2 3 4 5 6 7 8 9
0.093 0.186 0.279 0.372 0.465 0.557 0.650 0.743 0.836 0.929
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
2,000 185.806 3,000 278.709 4,000 371.612 5,000 464.515 6,000 557.418 7,000 650.321 8,000 743.224 9,000 836.127 10,000 929.030
900 1,000
100
10
Based on 1 inch = 2.54 centimeters, exactly; 1 ft 2 = 0.09290304 m 2 , exactly. Table 18b. Square Meters to Square Feet Conversion m 2 ft 2 m 2 ft 2 m 2 ft 2 m 2 ft 2 m 2
ft 2
1,076.39 2,152.78 3,229.17 4,305.56 5,381.96 6,458.35 7,534.74 8,611.13 9,687.52
107.64 215.28 322.92 430.56 538.20 645.83 753.47 861.11
10.76 21.53 32.29 43.06 53.82 64.58 75.35 86.11 96.88 107.64
1.08 2.15 3.23 4.31 5.38 6.46 7.53 8.61
100 200 300 400 500 600 700 800 900
10 20 30 40 50 60 70 80
1 2 3 4 5 6 7 8 9
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10
0.11 0.22 0.32 0.43 0.54 0.65 0.75 0.86 0.97 1.08
968.75 1,076.39
9.69 10.76
90 100
1,000 10,763.91
10
Based on 1 inch = 2.54 centimeters, exactly; 1 m 2 = 10.76391 ft 2 .
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