INCHES TO MILLIMETERS CONVERSION Table 8a. Inches to Millimeters Conversion Machinery's Handbook, 31st Edition
2840
inch
mm inch mm inch mm inch mm inch mm inch
mm
10 254.00000 1 20 508.00000 2 30 762.00000 3 40 1,016.00000 4 50 1,270.00000 5 60 1,524.00000 6 70 1,778.00000 7 80 2,032.00000 8 90 2,286.00000 9 100 2,540.00000 10
25.40000 0.1 2.54000 .01 0.25400 0.001 0.02540 0.0001 0.00254 50.80000 0.2 5.08000 .02 0.50800 0.002 0.05080 0.0002 0.00508 76.20000 0.3 7.62000 .03 0.76200 0.003 0.07620 0.0003 0.00762 101.60000 0.4 10.16000 .04 1.01600 0.004 0.10160 0.0004 0.01016 127.00000 0.5 12.70000 .05 1.27000 0.005 0.12700 0.0005 0.01270 152.40000 0.6 15.24000 .06 1.52400 0.006 0.15240 0.0006 0.01524 177.80000 0.7 17.78000 .07 1.77800 0.007 0.17780 0.0007 0.01778 203.20000 0.8 20.32000 .08 2.03200 0.008 0.20320 0.0008 0.02032 228.60000 0.9 22.86000 .09 2.2860 0.009 0.22860 0.0009 0.02286
254.00000 1.0 25.40000 .10 2.54000 0.010 0.25400 0.0010 0.02540 All values in this table are exact. For inches to centimeters, shift decimal point in mm column one place to left and read centimeters; thus, for example, 40 in. = 1016 mm = 101.6 cm. Table 8b. Millimeters to Inches Conversion mm inch mm inch mm inch mm inch mm inch mm inch 100 3.93701 10 0.39370 1 0.03937 0.1 0.00394 0.01 .000039 0.001 0.00004 200 7.87402 20 0.78740 2 0.07874 0.2 0.00787 0.02 .00079 0.002 0.00008 300 11.81102 30 1.18110 3 0.11811 0.3 0.01181 0.03 .00118 0.003 0.00012 400 15.74803 40 1.57480 4 0.15748 0.4 0.01575 0.04 .00157 0.004 0.00016 500 19.68504 50 1.96850 5 0.19685 0.5 0.01969 0.05 .00197 0.005 0.00020 600 23.62205 60 2.36220 6 0.23622 0.6 0.02362 0.06 .00236 0.006 0.00024 700 27.55906 70 2.75591 7 0.27559 0.7 0.02756 0.07 .00276 0.007 0.00028 800 31.49606 80 3.14961 8 0.31496 0.8 0.03150 0.08 .00315 0.008 0.00031 900 35.43307 90 3.54331 9 0.35433 0.9 0.03543 0.09 .00354 0.009 0.00035 1,000 39.37008 100 3.93701 10 0.39370 1.0 0.03937 0.10 .00394 0.010 0.00039 Based on 1 inch = 25.4 millimeters, exactly. For centimeters to inches, shift decimal point of centimeter value one place to right and enter mm column; thus, for example, 70 cm = 700 mm = 27.55906 inches. Table 9. Feet to Millimeters Conversion feet mm feet mm feet mm feet mm feet mm 100 30,480 10 3,048 1 304.8 0.1 30.48 0.01 3.048 200 60,960 20 6,096 2 609.6 0.2 60.96 0.02 6.096 300 91,440 30 9,144 3 914.4 0.3 91.44 0.03 9.144 400 121,920 40 12,192 4 1,219.2 0.4 121.92 0.04 12.192 500 152,400 50 15,240 5 1,524.0 0.5 152.40 0.05 15.240 600 182,880 60 18,288 6 1,828.8 0.6 182.88 0.06 18.288 700 213,360 70 21,336 7 2,133.6 0.7 213.36 0.07 21.336 800 243,840 80 24,384 8 2,438.4 0.8 243.84 0.08 24.384 900 274,320 90 27,432 9 2,743.2 0.9 274.32 0.09 27.432 1,000 304,800 100 30,480 10 3,048.0 1.0 304.80 0.10 30.480 Based on 1 inch = 25.4 millimeters, exactly. All values in this table are exact.
Example 1: Convert 293 feet, 5 47 ∕
64 inches to mm.
Example 2: Convert 71.86 feet to mm.
200 ft 90 ft
= 60,960.0 = 27,432.0
mm mm mm mm mm mm
70.0 1.0 0.80 0.06 71.86
feet = 21,336.0
mm mm mm mm mm
feet = feet = feet =
304.8 243.84
3 ft
=
914.4 127.0
5
inch =
18.288
64 inch =
18.653
feet = 21,902.928
47 ∕
64 inch = 89,452.053
293 ft 5 47 ∕
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