| finger | 1 finger (US) | 2 finger (US) | 3 finger (US) | 4 finger (US) | 5 finger (US) | 6 finger (US) | 7 finger (US) | 8 finger (US) | 9 finger (US) | 10 finger (US) | 11 finger (US) | 12 finger (US) | 13 finger (US) | 14 finger (US) | 15 finger (US) | 16 finger (US) | 17 finger (US) | 18 finger (US) | 19 finger (US) | 20 finger (US) | 21 finger (US) | 22 finger (US) | 23 finger (US) | 24 finger (US) | 25 finger (US) | 26 finger (US) | 27 finger (US) | 28 finger (US) | 29 finger (US) | 30 finger (US) | 31 finger (US) | 32 finger (US) | 33 finger (US) | 34 finger (US) | 35 finger (US) | 36 finger (US) | 37 finger (US) | 38 finger (US) | 39 finger (US) | 40 finger (US) | 41 finger (US) | 42 finger (US) | 43 finger (US) | 44 finger (US) | 45 finger (US) | 46 finger (US) | 47 finger (US) | 48 finger (US) | 49 finger (US) | 50 finger (US) | 51 finger (US) | 52 finger (US) | 53 finger (US) | 54 finger (US) | 55 finger (US) | 56 finger (US) | 57 finger (US) | 58 finger (US) | 59 finger (US) | 60 finger (US) | 61 finger (US) | 62 finger (US) | 63 finger (US) | 64 finger (US) | 65 finger (US) | 66 finger (US) | 67 finger (US) | 68 finger (US) | 69 finger (US) | 70 finger (US) | 71 finger (US) | 72 finger (US) | 73 finger (US) | 74 finger (US) | 75 finger (US) | 76 finger (US) | 77 finger (US) | 78 finger (US) | 79 finger (US) | 80 finger (US) | 81 finger (US) | 82 finger (US) | 83 finger (US) | 84 finger (US) | 85 finger (US) | 86 finger (US) | 87 finger (US) | 88 finger (US) | 89 finger (US) | 90 finger (US) | 91 finger (US) | 92 finger (US) | 93 finger (US) | 94 finger (US) | 95 finger (US) | 96 finger (US) | 97 finger (US) | 98 finger (US) | 99 finger (US) | 100 finger (US) |
| span | 0.0972222 span | 0.1944444 span | 0.2916667 span | 0.3888889 span | 0.4861111 span | 0.5833333 span | 0.6805556 span | 0.7777778 span | 0.875 span | 0.9722222 span | 1.0694444 span | 1.1666667 span | 1.2638889 span | 1.3611111 span | 1.4583333 span | 1.5555556 span | 1.6527778 span | 1.75 span | 1.8472222 span | 1.9444444 span | 2.0416667 span | 2.1388889 span | 2.2361111 span | 2.3333333 span | 2.4305556 span | 2.5277778 span | 2.625 span | 2.7222222 span | 2.8194444 span | 2.9166667 span | 3.0138889 span | 3.1111111 span | 3.2083333 span | 3.3055556 span | 3.4027778 span | 3.5 span | 3.5972222 span | 3.6944444 span | 3.7916667 span | 3.8888889 span | 3.9861111 span | 4.0833333 span | 4.1805556 span | 4.2777778 span | 4.375 span | 4.4722222 span | 4.5694444 span | 4.6666667 span | 4.7638889 span | 4.8611111 span | 4.9583333 span | 5.0555556 span | 5.1527778 span | 5.25 span | 5.3472222 span | 5.4444444 span | 5.5416667 span | 5.6388889 span | 5.7361111 span | 5.8333333 span | 5.9305556 span | 6.0277778 span | 6.125 span | 6.2222222 span | 6.3194444 span | 6.4166667 span | 6.5138889 span | 6.6111111 span | 6.7083333 span | 6.8055556 span | 6.9027778 span | 7 span | 7.0972222 span | 7.1944444 span | 7.2916667 span | 7.3888889 span | 7.4861111 span | 7.5833333 span | 7.6805556 span | 7.7777778 span | 7.875 span | 7.9722222 span | 8.0694444 span | 8.1666667 span | 8.2638889 span | 8.3611111 span | 8.4583333 span | 8.5555556 span | 8.6527778 span | 8.75 span | 8.8472222 span | 8.9444444 span | 9.0416667 span | 9.1388889 span | 9.2361111 span | 9.3333333 span | 9.4305556 span | 9.5277778 span | 9.625 span | 9.7222222 span |
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 |
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 |
| finger | spans |
|---|---|
| 1 | = 0.0972222 |
| 10.2857143 | = 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 …) |