| span | 1 span | 2 span | 3 span | 4 span | 5 span | 6 span | 7 span | 8 span | 9 span | 10 span | 11 span | 12 span | 13 span | 14 span | 15 span | 16 span | 17 span | 18 span | 19 span | 20 span | 21 span | 22 span | 23 span | 24 span | 25 span | 26 span | 27 span | 28 span | 29 span | 30 span | 31 span | 32 span | 33 span | 34 span | 35 span | 36 span | 37 span | 38 span | 39 span | 40 span | 41 span | 42 span | 43 span | 44 span | 45 span | 46 span | 47 span | 48 span | 49 span | 50 span | 51 span | 52 span | 53 span | 54 span | 55 span | 56 span | 57 span | 58 span | 59 span | 60 span | 61 span | 62 span | 63 span | 64 span | 65 span | 66 span | 67 span | 68 span | 69 span | 70 span | 71 span | 72 span | 73 span | 74 span | 75 span | 76 span | 77 span | 78 span | 79 span | 80 span | 81 span | 82 span | 83 span | 84 span | 85 span | 86 span | 87 span | 88 span | 89 span | 90 span | 91 span | 92 span | 93 span | 94 span | 95 span | 96 span | 97 span | 98 span | 99 span | 100 span |
| finger | 10.2857143 finger (US) | 20.5714286 finger (US) | 30.8571429 finger (US) | 41.1428571 finger (US) | 51.4285714 finger (US) | 61.7142857 finger (US) | 72 finger (US) | 82.2857143 finger (US) | 92.5714286 finger (US) | 102.8571429 finger (US) | 113.1428571 finger (US) | 123.4285714 finger (US) | 133.7142857 finger (US) | 144 finger (US) | 154.2857143 finger (US) | 164.5714286 finger (US) | 174.8571429 finger (US) | 185.1428571 finger (US) | 195.4285714 finger (US) | 205.7142857 finger (US) | 216 finger (US) | 226.2857143 finger (US) | 236.5714286 finger (US) | 246.8571429 finger (US) | 257.1428571 finger (US) | 267.4285714 finger (US) | 277.7142857 finger (US) | 288 finger (US) | 298.2857143 finger (US) | 308.5714286 finger (US) | 318.8571429 finger (US) | 329.1428571 finger (US) | 339.4285714 finger (US) | 349.7142857 finger (US) | 360 finger (US) | 370.2857143 finger (US) | 380.5714286 finger (US) | 390.8571429 finger (US) | 401.1428571 finger (US) | 411.4285714 finger (US) | 421.7142857 finger (US) | 432 finger (US) | 442.2857143 finger (US) | 452.5714286 finger (US) | 462.8571429 finger (US) | 473.1428571 finger (US) | 483.4285714 finger (US) | 493.7142857 finger (US) | 504 finger (US) | 514.2857143 finger (US) | 524.5714286 finger (US) | 534.8571429 finger (US) | 545.1428571 finger (US) | 555.4285714 finger (US) | 565.7142857 finger (US) | 576 finger (US) | 586.2857143 finger (US) | 596.5714286 finger (US) | 606.8571429 finger (US) | 617.1428571 finger (US) | 627.4285714 finger (US) | 637.7142857 finger (US) | 648 finger (US) | 658.2857143 finger (US) | 668.5714286 finger (US) | 678.8571429 finger (US) | 689.1428571 finger (US) | 699.4285714 finger (US) | 709.7142857 finger (US) | 720 finger (US) | 730.2857143 finger (US) | 740.5714286 finger (US) | 750.8571429 finger (US) | 761.1428571 finger (US) | 771.4285714 finger (US) | 781.7142857 finger (US) | 792 finger (US) | 802.2857143 finger (US) | 812.5714286 finger (US) | 822.8571429 finger (US) | 833.1428571 finger (US) | 843.4285714 finger (US) | 853.7142857 finger (US) | 864 finger (US) | 874.2857143 finger (US) | 884.5714286 finger (US) | 894.8571429 finger (US) | 905.1428571 finger (US) | 915.4285714 finger (US) | 925.7142857 finger (US) | 936 finger (US) | 946.2857143 finger (US) | 956.5714286 finger (US) | 966.8571429 finger (US) | 977.1428571 finger (US) | 987.4285714 finger (US) | 997.7142857 finger (US) | 1 008 finger (US) | 1,018.2857143 finger (US) | 1,028.5714286 finger (US) |
A span is the distance measured by a human hand, from the tip of the thumb to the tip of the little finger. In ancient times, a span was considered to be half a cubit. Sometimes the distinction is made between the great span (thumb to little finger) and little span (index finger to little finger).
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| span | span | ≡ 9 in | = 0.2286 m | Imperial/US |
| spans | finger | spans | finger |
|---|---|---|---|
| 1 | = 10.285714285714 | 4 | = 41.142857142857 |
| 1.5 | = 15.428571428571 | 4.5 | = 46.285714285714 |
| 2 | = 20.571428571429 | 5 | = 51.428571428571 |
| 2.5 | = 25.714285714286 | 5.5 | = 56.571428571429 |
| 3 | = 30.857142857143 | 6 | = 61.714285714286 |
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 | finger (US) | ≡ 7⁄8 in | = 0.022225 m | Imperial/US |
| finger | spans | finger | spans |
|---|---|---|---|
| 1 | = 0.097222222222222 | 4 | = 0.38888888888889 |
| 1.5 | = 0.14583333333333 | 4.5 | = 0.4375 |
| 2 | = 0.19444444444444 | 5 | = 0.48611111111111 |
| 2.5 | = 0.24305555555556 | 5.5 | = 0.53472222222222 |
| 3 | = 0.29166666666667 | 6 | = 0.58333333333333 |
| spans | finger |
|---|---|
| 1 | = 10.2857143 |
| 0.0972222 | = 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 …) |