| 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) |
| nail (cloth) | 0.3888889 nail (cloth) | 0.7777778 nail (cloth) | 1.1666667 nail (cloth) | 1.5555556 nail (cloth) | 1.9444444 nail (cloth) | 2.3333333 nail (cloth) | 2.7222222 nail (cloth) | 3.1111111 nail (cloth) | 3.5 nail (cloth) | 3.8888889 nail (cloth) | 4.2777778 nail (cloth) | 4.6666667 nail (cloth) | 5.0555556 nail (cloth) | 5.4444444 nail (cloth) | 5.8333333 nail (cloth) | 6.2222222 nail (cloth) | 6.6111111 nail (cloth) | 7 nail (cloth) | 7.3888889 nail (cloth) | 7.7777778 nail (cloth) | 8.1666667 nail (cloth) | 8.5555556 nail (cloth) | 8.9444444 nail (cloth) | 9.3333333 nail (cloth) | 9.7222222 nail (cloth) | 10.1111111 nail (cloth) | 10.5 nail (cloth) | 10.8888889 nail (cloth) | 11.2777778 nail (cloth) | 11.6666667 nail (cloth) | 12.0555556 nail (cloth) | 12.4444444 nail (cloth) | 12.8333333 nail (cloth) | 13.2222222 nail (cloth) | 13.6111111 nail (cloth) | 14 nail (cloth) | 14.3888889 nail (cloth) | 14.7777778 nail (cloth) | 15.1666667 nail (cloth) | 15.5555556 nail (cloth) | 15.9444444 nail (cloth) | 16.3333333 nail (cloth) | 16.7222222 nail (cloth) | 17.1111111 nail (cloth) | 17.5 nail (cloth) | 17.8888889 nail (cloth) | 18.2777778 nail (cloth) | 18.6666667 nail (cloth) | 19.0555556 nail (cloth) | 19.4444444 nail (cloth) | 19.8333333 nail (cloth) | 20.2222222 nail (cloth) | 20.6111111 nail (cloth) | 21 nail (cloth) | 21.3888889 nail (cloth) | 21.7777778 nail (cloth) | 22.1666667 nail (cloth) | 22.5555556 nail (cloth) | 22.9444444 nail (cloth) | 23.3333333 nail (cloth) | 23.7222222 nail (cloth) | 24.1111111 nail (cloth) | 24.5 nail (cloth) | 24.8888889 nail (cloth) | 25.2777778 nail (cloth) | 25.6666667 nail (cloth) | 26.0555556 nail (cloth) | 26.4444444 nail (cloth) | 26.8333333 nail (cloth) | 27.2222222 nail (cloth) | 27.6111111 nail (cloth) | 28 nail (cloth) | 28.3888889 nail (cloth) | 28.7777778 nail (cloth) | 29.1666667 nail (cloth) | 29.5555556 nail (cloth) | 29.9444444 nail (cloth) | 30.3333333 nail (cloth) | 30.7222222 nail (cloth) | 31.1111111 nail (cloth) | 31.5 nail (cloth) | 31.8888889 nail (cloth) | 32.2777778 nail (cloth) | 32.6666667 nail (cloth) | 33.0555556 nail (cloth) | 33.4444444 nail (cloth) | 33.8333333 nail (cloth) | 34.2222222 nail (cloth) | 34.6111111 nail (cloth) | 35 nail (cloth) | 35.3888889 nail (cloth) | 35.7777778 nail (cloth) | 36.1666667 nail (cloth) | 36.5555556 nail (cloth) | 36.9444444 nail (cloth) | 37.3333333 nail (cloth) | 37.7222222 nail (cloth) | 38.1111111 nail (cloth) | 38.5 nail (cloth) | 38.8888889 nail (cloth) |
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 | nails (cloth) | finger | nails (cloth) |
|---|---|---|---|
| 1 | = 0.38888888888889 | 4 | = 1.5555555555556 |
| 1.5 | = 0.58333333333333 | 4.5 | = 1.75 |
| 2 | = 0.77777777777778 | 5 | = 1.9444444444444 |
| 2.5 | = 0.97222222222222 | 5.5 | = 2.1388888888889 |
| 3 | = 1.1666666666667 | 6 | = 2.3333333333333 |
A nail, as a unit of cloth measurement, is generally a sixteenth of a yard or 2 1/4 inches (5.715 cm). The nail was apparently named after the practice of hammering brass nails into the counter at shops where cloth was sold.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| nail (cloth) | ≡ 2 1⁄4 in | = 0.05715 m | Other (Length) |
| nails (cloth) | finger | nails (cloth) | finger |
|---|---|---|---|
| 1 | = 2.5714285714286 | 4 | = 10.285714285714 |
| 1.5 | = 3.8571428571429 | 4.5 | = 11.571428571429 |
| 2 | = 5.1428571428571 | 5 | = 12.857142857143 |
| 2.5 | = 6.4285714285714 | 5.5 | = 14.142857142857 |
| 3 | = 7.7142857142857 | 6 | = 15.428571428571 |
| finger | nails (cloth) |
|---|---|
| 1 | = 0.3888889 |
| 2.5714286 | = 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 …) |