The table below can be used to convert between some common length units:
For full table - rotate the screen!
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inches | feet | yards | miles | nautical miles | cables | |
metre | 39.37 | 3.28 | 1.09 | 6.21 10-4 | 5.4 10-3 | 5.4 10-3 |
decimeter | 3.937 | 0.328 | 0.109 | 6.21 10-5 | 5.4 10-4 | 5.4 10-4 |
centimeter | 0.394 | 0.0328 | 0.0109 | 6.21 10-6 | 5.4 10-5 | 5.4 10-5 |
millimeter | 0.039 | 0.00328 | 0.00109 | 6.21 10-7 | 5.4 10-6 | 5.4 10-6 |
micrometer | 3.9 10-5 | 3.28 10-6 | 1.09 10-6 | 6.2 10-10 | 5.4 10-10 | 5.4 10-9 |
nanometer | 3.9 10-8 | 3.28 10-9 | 1.09 10-9 | 6.21 10-13 | 5.4 10-13 | 5.4 10-12 |
ångströms | 3.9 10-9 | 3.28 10-10 | 1.09 10-10 | 6.21 10-14 | 5.4 10-14 | 5.4 10-13 |
hectometer | 3937 | 328 | 109.4 | 0.0621 | 0.054 | 0.54 |
kilometer | 39370 | 3280 | 1094 | 0.621 | 0.54 | 0.54 |
inch | 1 | 0.0833 | 0.0278 | 1.58 10-5 | 1.37 10-5 | 1.37 10-4 |
foot | 12 | 1 | 0.33 | 1.89 10-4 | 1.65 10-4 | 1.65 10-3 |
yard | 36 | 3 | 1 | 5.7 10-4 | 4.9 10-4 | 4.9 10-3 |
mile | 63398 | 5280 | 1761 | 1 | 0.87 | 8.7 |
nautical mile | 72908 | 6076 | 2025 | 1.15 | 1 | 10 |
cable | 7291 | 607.6 | 203 | 0.11 | 0.1 | 1 |
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metre | decimeters | centimeters | millimeters | micrometers | nanometers | ångströms | hectometers | kilometers | |
metre | 1 | 10 | 100 | 1000 | 106 | 109 | 1010 | 0.01 | 0.001 |
decimeter | 0.1 | 1 | 10 | 100 | 105 | 108 | 109 | 0.001 | 0.0001 |
centimeter | 0.01 | 0.1 | 1 | 10 | 104 | 107 | 108 | 0.0001 | 0.00001 |
millimeter | 0.001 | 0.01 | 0.1 | 1 | 103 | 106 | 107 | 0.00001 | 0.000001 |
micrometer | 10-6 | 10-5 | 10-4 | 10-3 | 1 | 103 | 104 | 10-8 | 10-9 |
nanometer | 10-9 | 10-8 | 10-7 | 10-6 | 10-3 | 1 | 10 | 10-11 | 10-12 |
ångströms | 10-10 | 10-9 | 10-8 | 10-7 | 10-4 | 0.1 | 1 | 10-12 | 10-13 |
hectometer | 100 | 1000 | 104 | 105 | 108 | 1011 | 1012 | 1 | 0.1 |
kilometer | 1000 | 104 | 105 | 106 | 109 | 1012 | 1013 | 10 | 1 |
inch | 0.0254 | 0.254 | 2.54 | 25.4 | 2.54 104 | 2.54 107 | 2.54 108 | 2.54 10-4 | 2.54 10-5 |
foot | 0.3048 | 3.048 | 30.48 | 304.8 | 3.05 105 | 3.05 108 | 3.05 109 | 3.05 10-3 | 3.05 10-4 |
yard | 0.914 | 9.14 | 91.4 | 914 | 9.14 105 | 9.14 108 | 9.14 109 | 9.14 10-3 | 9.14 10-4 |
mile | 1610 | 1.61 104 | 1.61 105 | 1.61 106 | 1.61 107 | 1.61 1012 | 1.61 1013 | 1.61 102 | 1.61 |
nautical mile | 1852 | 1.85 104 | 1.85 105 | 1.85 106 | 1.85 107 | 1.85 1012 | 1.85 1013 | 1.85 102 | 1.85 |
cable | 185 | 1.85 103 | 1.85 104 | 1.85 105 | 1.85 106 | 1.85 1011 | 1.85 1012 | 1.85 | 0.185 |
Note that since the metrification of the inch the inch has been specified as exactly 25.4 mm.
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A nautical mile is now 1852 m (6080 feet) - it was originally defined as one minute of arc of a great circle - or 1/60 of 1/360 of the earth's circumference. The ordinary mile is more precisely known as the statute mile - as defined by statute or law.
4" (inches) can be converted to feet by multiplying inches with factor 0.0833 from the table above
4 (inches) 0.0833 (feet/inch) = 0.333 feet
Inches | Feet | |
---|---|---|
fraction | decimal | |
1 | 1/12 | 0.08 |
2 | 2/12 | 0.17 |
3 | 3/12 | 0.25 |
4 | 4/12 | 0.33 |
5 | 5/12 | 0.42 |
6 | 6/12 | 0.5 |
7 | 7/12 | 0.58 |
8 | 8/12 | 0.67 |
9 | 9/12 | 0.75 |
10 | 10/12 | 0.83 |
11 | 11/12 | 0.92 |
12 | 12/12 | 1 |
Note that the standard reference temperature for industrial length measurement is 20 oC (68 oF).
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