| micrometer | 1 μm | 2 μm | 3 μm | 4 μm | 5 μm | 6 μm | 7 μm | 8 μm | 9 μm | 10 μm | 11 μm | 12 μm | 13 μm | 14 μm | 15 μm | 16 μm | 17 μm | 18 μm | 19 μm | 20 μm | 21 μm | 22 μm | 23 μm | 24 μm | 25 μm | 26 μm | 27 μm | 28 μm | 29 μm | 30 μm | 31 μm | 32 μm | 33 μm | 34 μm | 35 μm | 36 μm | 37 μm | 38 μm | 39 μm | 40 μm | 41 μm | 42 μm | 43 μm | 44 μm | 45 μm | 46 μm | 47 μm | 48 μm | 49 μm | 50 μm | 51 μm | 52 μm | 53 μm | 54 μm | 55 μm | 56 μm | 57 μm | 58 μm | 59 μm | 60 μm | 61 μm | 62 μm | 63 μm | 64 μm | 65 μm | 66 μm | 67 μm | 68 μm | 69 μm | 70 μm | 71 μm | 72 μm | 73 μm | 74 μm | 75 μm | 76 μm | 77 μm | 78 μm | 79 μm | 80 μm | 81 μm | 82 μm | 83 μm | 84 μm | 85 μm | 86 μm | 87 μm | 88 μm | 89 μm | 90 μm | 91 μm | 92 μm | 93 μm | 94 μm | 95 μm | 96 μm | 97 μm | 98 μm | 99 μm | 100 μm |
| finger (cloth) | 8.7489063867017 × 10-6 finger (cloth) | 1.7497812773403 × 10-5 finger (cloth) | 2.6246719160105 × 10-5 finger (cloth) | 3.4995625546807 × 10-5 finger (cloth) | 4.3744531933508 × 10-5 finger (cloth) | 5.249343832021 × 10-5 finger (cloth) | 6.1242344706912 × 10-5 finger (cloth) | 6.9991251093613 × 10-5 finger (cloth) | 7.8740157480315 × 10-5 finger (cloth) | 8.7489063867017 × 10-5 finger (cloth) | 9.6237970253718 × 10-5 finger (cloth) | 0.0001050 finger (cloth) | 0.0001137 finger (cloth) | 0.0001225 finger (cloth) | 0.0001312 finger (cloth) | 0.0001400 finger (cloth) | 0.0001487 finger (cloth) | 0.0001575 finger (cloth) | 0.0001662 finger (cloth) | 0.0001750 finger (cloth) | 0.0001837 finger (cloth) | 0.0001925 finger (cloth) | 0.0002012 finger (cloth) | 0.0002100 finger (cloth) | 0.0002187 finger (cloth) | 0.0002275 finger (cloth) | 0.0002362 finger (cloth) | 0.0002450 finger (cloth) | 0.0002537 finger (cloth) | 0.0002625 finger (cloth) | 0.0002712 finger (cloth) | 0.0002800 finger (cloth) | 0.0002887 finger (cloth) | 0.0002975 finger (cloth) | 0.0003062 finger (cloth) | 0.0003150 finger (cloth) | 0.0003237 finger (cloth) | 0.0003325 finger (cloth) | 0.0003412 finger (cloth) | 0.0003500 finger (cloth) | 0.0003587 finger (cloth) | 0.0003675 finger (cloth) | 0.0003762 finger (cloth) | 0.0003850 finger (cloth) | 0.0003937 finger (cloth) | 0.0004024 finger (cloth) | 0.0004112 finger (cloth) | 0.0004199 finger (cloth) | 0.0004287 finger (cloth) | 0.0004374 finger (cloth) | 0.0004462 finger (cloth) | 0.0004549 finger (cloth) | 0.0004637 finger (cloth) | 0.0004724 finger (cloth) | 0.0004812 finger (cloth) | 0.0004899 finger (cloth) | 0.0004987 finger (cloth) | 0.0005074 finger (cloth) | 0.0005162 finger (cloth) | 0.0005249 finger (cloth) | 0.0005337 finger (cloth) | 0.0005424 finger (cloth) | 0.0005512 finger (cloth) | 0.0005599 finger (cloth) | 0.0005687 finger (cloth) | 0.0005774 finger (cloth) | 0.0005862 finger (cloth) | 0.0005949 finger (cloth) | 0.0006037 finger (cloth) | 0.0006124 finger (cloth) | 0.0006212 finger (cloth) | 0.0006299 finger (cloth) | 0.0006387 finger (cloth) | 0.0006474 finger (cloth) | 0.0006562 finger (cloth) | 0.0006649 finger (cloth) | 0.0006737 finger (cloth) | 0.0006824 finger (cloth) | 0.0006912 finger (cloth) | 0.0006999 finger (cloth) | 0.0007087 finger (cloth) | 0.0007174 finger (cloth) | 0.0007262 finger (cloth) | 0.0007349 finger (cloth) | 0.0007437 finger (cloth) | 0.0007524 finger (cloth) | 0.0007612 finger (cloth) | 0.0007699 finger (cloth) | 0.0007787 finger (cloth) | 0.0007874 finger (cloth) | 0.0007962 finger (cloth) | 0.0008049 finger (cloth) | 0.0008136 finger (cloth) | 0.0008224 finger (cloth) | 0.0008311 finger (cloth) | 0.0008399 finger (cloth) | 0.0008486 finger (cloth) | 0.0008574 finger (cloth) | 0.0008661 finger (cloth) | 0.0008749 finger (cloth) |
The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equaling 1×10−6 of a metre (SI standard prefix "micro-" = 10−6); that is, one millionth of a metre (or one thousandth of a millimetre, 0.001 mm, or about 0.000039 inch).
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| micrometer | μm | ≡ 1×10-6 m | ≡ 1×10-6 m | Metric system SI |
| micrometers | finger (cloth) | micrometers | finger (cloth) |
|---|---|---|---|
| 1 | = 8.7489063867017E-6 | 4 | = 3.4995625546807E-5 |
| 1.5 | = 1.3123359580052E-5 | 4.5 | = 3.9370078740157E-5 |
| 2 | = 1.7497812773403E-5 | 5 | = 4.3744531933508E-5 |
| 2.5 | = 2.1872265966754E-5 | 5.5 | = 4.8118985126859E-5 |
| 3 | = 2.6246719160105E-5 | 6 | = 5.249343832021E-5 |
A finger (sometimes fingerbreadth or finger's breadth) is any of several units of measurement that are approximately the width of an adult human finger, including:
The digit, also known as digitus or digitus transversus (Latin), dactyl (Greek) or dactylus, or finger's breadth — 3⁄4 of an inch or 1⁄16 of a foot
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| finger (cloth) | ≡ 4 ⁄12 in | = 0.1143 m | Other (Length) |
| finger (cloth) | micrometers | finger (cloth) | micrometers |
|---|---|---|---|
| 1 | = 114300 | 4 | = 457200 |
| 1.5 | = 171450 | 4.5 | = 514350 |
| 2 | = 228600 | 5 | = 571500 |
| 2.5 | = 285750 | 5.5 | = 628650 |
| 3 | = 342900 | 6 | = 685800 |
| micrometers | finger (cloth) |
|---|---|
| 1 | = 8.7489063867017 × 10-6 |
| 114 300 | = 1 |
| Symbol | Definition |
|---|---|
| ≡ | exactly equal |
| ≈ | approximately equal to |
| = | equal to |
| digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |