| 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 |
| pace | 0.3 pace | 0.6 pace | 0.9 pace | 1.2 pace | 1.5 pace | 1.8 pace | 2.1 pace | 2.4 pace | 2.7 pace | 3 pace | 3.3 pace | 3.6 pace | 3.9 pace | 4.2 pace | 4.5 pace | 4.8 pace | 5.1 pace | 5.4 pace | 5.7 pace | 6 pace | 6.3 pace | 6.6 pace | 6.9 pace | 7.2 pace | 7.5 pace | 7.8 pace | 8.1 pace | 8.4 pace | 8.7 pace | 9 pace | 9.3 pace | 9.6 pace | 9.9 pace | 10.2 pace | 10.5 pace | 10.8 pace | 11.1 pace | 11.4 pace | 11.7 pace | 12 pace | 12.3 pace | 12.6 pace | 12.9 pace | 13.2 pace | 13.5 pace | 13.8 pace | 14.1 pace | 14.4 pace | 14.7 pace | 15 pace | 15.3 pace | 15.6 pace | 15.9 pace | 16.2 pace | 16.5 pace | 16.8 pace | 17.1 pace | 17.4 pace | 17.7 pace | 18 pace | 18.3 pace | 18.6 pace | 18.9 pace | 19.2 pace | 19.5 pace | 19.8 pace | 20.1 pace | 20.4 pace | 20.7 pace | 21 pace | 21.3 pace | 21.6 pace | 21.9 pace | 22.2 pace | 22.5 pace | 22.8 pace | 23.1 pace | 23.4 pace | 23.7 pace | 24 pace | 24.3 pace | 24.6 pace | 24.9 pace | 25.2 pace | 25.5 pace | 25.8 pace | 26.1 pace | 26.4 pace | 26.7 pace | 27 pace | 27.3 pace | 27.6 pace | 27.9 pace | 28.2 pace | 28.5 pace | 28.8 pace | 29.1 pace | 29.4 pace | 29.7 pace | 30 pace |
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 | paces | spans | paces |
|---|---|---|---|
| 1 | = 0.3 | 4 | = 1.2 |
| 1.5 | = 0.45 | 4.5 | = 1.35 |
| 2 | = 0.6 | 5 | = 1.5 |
| 2.5 | = 0.75 | 5.5 | = 1.65 |
| 3 | = 0.9 | 6 | = 1.8 |
A pace is a unit of length consisting either of one normal walking step (~0.75 m), or of a double step, returning to the same foot (~1.5 m). Like other traditional measurements, paces started as informal units but have since been standardized, often with the specific length set according to a typical brisk or military marching stride.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| pace | ≡ 2.5 ft | = 0.762 m | Imperial/US |
| paces | spans | paces | spans |
|---|---|---|---|
| 1 | = 3.3333333333333 | 4 | = 13.333333333333 |
| 1.5 | = 5 | 4.5 | = 15 |
| 2 | = 6.6666666666667 | 5 | = 16.666666666667 |
| 2.5 | = 8.3333333333333 | 5.5 | = 18.333333333333 |
| 3 | = 10 | 6 | = 20 |
| spans | paces |
|---|---|
| 1 | = 0.3 |
| 3.3333333 | = 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 …) |