| finger (cloth) | 1 finger (cloth) | 2 finger (cloth) | 3 finger (cloth) | 4 finger (cloth) | 5 finger (cloth) | 6 finger (cloth) | 7 finger (cloth) | 8 finger (cloth) | 9 finger (cloth) | 10 finger (cloth) | 11 finger (cloth) | 12 finger (cloth) | 13 finger (cloth) | 14 finger (cloth) | 15 finger (cloth) | 16 finger (cloth) | 17 finger (cloth) | 18 finger (cloth) | 19 finger (cloth) | 20 finger (cloth) | 21 finger (cloth) | 22 finger (cloth) | 23 finger (cloth) | 24 finger (cloth) | 25 finger (cloth) | 26 finger (cloth) | 27 finger (cloth) | 28 finger (cloth) | 29 finger (cloth) | 30 finger (cloth) | 31 finger (cloth) | 32 finger (cloth) | 33 finger (cloth) | 34 finger (cloth) | 35 finger (cloth) | 36 finger (cloth) | 37 finger (cloth) | 38 finger (cloth) | 39 finger (cloth) | 40 finger (cloth) | 41 finger (cloth) | 42 finger (cloth) | 43 finger (cloth) | 44 finger (cloth) | 45 finger (cloth) | 46 finger (cloth) | 47 finger (cloth) | 48 finger (cloth) | 49 finger (cloth) | 50 finger (cloth) | 51 finger (cloth) | 52 finger (cloth) | 53 finger (cloth) | 54 finger (cloth) | 55 finger (cloth) | 56 finger (cloth) | 57 finger (cloth) | 58 finger (cloth) | 59 finger (cloth) | 60 finger (cloth) | 61 finger (cloth) | 62 finger (cloth) | 63 finger (cloth) | 64 finger (cloth) | 65 finger (cloth) | 66 finger (cloth) | 67 finger (cloth) | 68 finger (cloth) | 69 finger (cloth) | 70 finger (cloth) | 71 finger (cloth) | 72 finger (cloth) | 73 finger (cloth) | 74 finger (cloth) | 75 finger (cloth) | 76 finger (cloth) | 77 finger (cloth) | 78 finger (cloth) | 79 finger (cloth) | 80 finger (cloth) | 81 finger (cloth) | 82 finger (cloth) | 83 finger (cloth) | 84 finger (cloth) | 85 finger (cloth) | 86 finger (cloth) | 87 finger (cloth) | 88 finger (cloth) | 89 finger (cloth) | 90 finger (cloth) | 91 finger (cloth) | 92 finger (cloth) | 93 finger (cloth) | 94 finger (cloth) | 95 finger (cloth) | 96 finger (cloth) | 97 finger (cloth) | 98 finger (cloth) | 99 finger (cloth) | 100 finger (cloth) |
| fermtometer | 1.143 × 1014 fm | 2.286 × 1014 fm | 3.429 × 1014 fm | 4.572 × 1014 fm | 5.715 × 1014 fm | 6.858 × 1014 fm | 8.001 × 1014 fm | 9.144 × 1014 fm | 1.0287 × 1015 fm | 1.143 × 1015 fm | 1.2573 × 1015 fm | 1.3716 × 1015 fm | 1.4859 × 1015 fm | 1.6002 × 1015 fm | 1.7145 × 1015 fm | 1.8288 × 1015 fm | 1.9431 × 1015 fm | 2.0574 × 1015 fm | 2.1717 × 1015 fm | 2.286 × 1015 fm | 2.4003 × 1015 fm | 2.5146 × 1015 fm | 2.6289 × 1015 fm | 2.7432 × 1015 fm | 2.8575 × 1015 fm | 2.9718 × 1015 fm | 3.0861 × 1015 fm | 3.2004 × 1015 fm | 3.3147 × 1015 fm | 3.429 × 1015 fm | 3.5433 × 1015 fm | 3.6576 × 1015 fm | 3.7719 × 1015 fm | 3.8862 × 1015 fm | 4.0005 × 1015 fm | 4.1148 × 1015 fm | 4.2291 × 1015 fm | 4.3434 × 1015 fm | 4.4577 × 1015 fm | 4.572 × 1015 fm | 4.6863 × 1015 fm | 4.8006 × 1015 fm | 4.9149 × 1015 fm | 5.0292 × 1015 fm | 5.1435 × 1015 fm | 5.2578 × 1015 fm | 5.3721 × 1015 fm | 5.4864 × 1015 fm | 5.6007 × 1015 fm | 5.715 × 1015 fm | 5.8293 × 1015 fm | 5.9436 × 1015 fm | 6.0579 × 1015 fm | 6.1722 × 1015 fm | 6.2865 × 1015 fm | 6.4008 × 1015 fm | 6.5151 × 1015 fm | 6.6294 × 1015 fm | 6.7437 × 1015 fm | 6.858 × 1015 fm | 6.9723 × 1015 fm | 7.0866 × 1015 fm | 7.2009 × 1015 fm | 7.3152 × 1015 fm | 7.4295 × 1015 fm | 7.5438 × 1015 fm | 7.6581 × 1015 fm | 7.7724 × 1015 fm | 7.8867 × 1015 fm | 8.001 × 1015 fm | 8.1153 × 1015 fm | 8.2296 × 1015 fm | 8.3439 × 1015 fm | 8.4582 × 1015 fm | 8.5725 × 1015 fm | 8.6868 × 1015 fm | 8.8011 × 1015 fm | 8.9154 × 1015 fm | 9.0297 × 1015 fm | 9.144 × 1015 fm | 9.2583 × 1015 fm | 9.3726 × 1015 fm | 9.4869 × 1015 fm | 9.6012 × 1015 fm | 9.7155 × 1015 fm | 9.8298 × 1015 fm | 9.9441 × 1015 fm | 1.00584 × 1016 fm | 1.01727 × 1016 fm | 1.0287 × 1016 fm | 1.04013 × 1016 fm | 1.05156 × 1016 fm | 1.06299 × 1016 fm | 1.07442 × 1016 fm | 1.08585 × 1016 fm | 1.09728 × 1016 fm | 1.10871 × 1016 fm | 1.12014 × 1016 fm | 1.13157 × 1016 fm | 1.143 × 1016 fm |
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) | fermtometers | finger (cloth) | fermtometers |
|---|---|---|---|
| 1 | = 1.143E+14 | 4 | = 4.572E+14 |
| 1.5 | = 1.7145E+14 | 4.5 | = 5.1435E+14 |
| 2 | = 2.286E+14 | 5 | = 5.715E+14 |
| 2.5 | = 2.8575E+14 | 5.5 | = 6.2865E+14 |
| 3 | = 3.429E+14 | 6 | = 6.858E+14 |
The femtometre (American spelling femtometer, symbol fm derived from the Danish and Norwegian word femten, "fifteen"+Ancient Greek: μέτρον, metrοn, "unit of measurement") is an SI unit of length equal to 10−15 metres, which means a quadrillionth of one. This distance can also be called a fermi and was so named in honour of physicist Enrico Fermi, as it is a typical length-scale of nuclear physics.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| fermtometer | fm | 1000 attometres = 1 femtometre = 1 fermi = 0.001 picometre = 1×10−15 metres 1000000 femtometres = 10 ångström = 1 nanometre. | ≡ 1×10-15 m | Metric system SI |
| fermtometers | finger (cloth) | fermtometers | finger (cloth) |
|---|---|---|---|
| 1 | = 8.7489063867017E-15 | 4 | = 3.4995625546807E-14 |
| 1.5 | = 1.3123359580052E-14 | 4.5 | = 3.9370078740157E-14 |
| 2 | = 1.7497812773403E-14 | 5 | = 4.3744531933508E-14 |
| 2.5 | = 2.1872265966754E-14 | 5.5 | = 4.8118985126859E-14 |
| 3 | = 2.6246719160105E-14 | 6 | = 5.249343832021E-14 |
| finger (cloth) | fermtometers |
|---|---|
| 1 | = 1.143 × 1014 |
| 8.7489063867017 × 10-15 | = 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 …) |