foot, metric (short) | 1 smf | 2 smf | 3 smf | 4 smf | 5 smf | 6 smf | 7 smf | 8 smf | 9 smf | 10 smf | 11 smf | 12 smf | 13 smf | 14 smf | 15 smf | 16 smf | 17 smf | 18 smf | 19 smf | 20 smf | 21 smf | 22 smf | 23 smf | 24 smf | 25 smf | 26 smf | 27 smf | 28 smf | 29 smf | 30 smf | 31 smf | 32 smf | 33 smf | 34 smf | 35 smf | 36 smf | 37 smf | 38 smf | 39 smf | 40 smf | 41 smf | 42 smf | 43 smf | 44 smf | 45 smf | 46 smf | 47 smf | 48 smf | 49 smf | 50 smf | 51 smf | 52 smf | 53 smf | 54 smf | 55 smf | 56 smf | 57 smf | 58 smf | 59 smf | 60 smf | 61 smf | 62 smf | 63 smf | 64 smf | 65 smf | 66 smf | 67 smf | 68 smf | 69 smf | 70 smf | 71 smf | 72 smf | 73 smf | 74 smf | 75 smf | 76 smf | 77 smf | 78 smf | 79 smf | 80 smf | 81 smf | 82 smf | 83 smf | 84 smf | 85 smf | 86 smf | 87 smf | 88 smf | 89 smf | 90 smf | 91 smf | 92 smf | 93 smf | 94 smf | 95 smf | 96 smf | 97 smf | 98 smf | 99 smf | 100 smf |
span | 1.3123360 span | 2.6246719 span | 3.9370079 span | 5.2493438 span | 6.5616798 span | 7.8740157 span | 9.1863517 span | 10.4986877 span | 11.8110236 span | 13.1233596 span | 14.4356955 span | 15.7480315 span | 17.0603675 span | 18.3727034 span | 19.6850394 span | 20.9973753 span | 22.3097113 span | 23.6220472 span | 24.9343832 span | 26.2467192 span | 27.5590551 span | 28.8713911 span | 30.1837270 span | 31.4960630 span | 32.8083990 span | 34.1207349 span | 35.4330709 span | 36.7454068 span | 38.0577428 span | 39.3700787 span | 40.6824147 span | 41.9947507 span | 43.3070866 span | 44.6194226 span | 45.9317585 span | 47.2440945 span | 48.5564304 span | 49.8687664 span | 51.1811024 span | 52.4934383 span | 53.8057743 span | 55.1181102 span | 56.4304462 span | 57.7427822 span | 59.0551181 span | 60.3674541 span | 61.6797900 span | 62.9921260 span | 64.3044619 span | 65.6167979 span | 66.9291339 span | 68.2414698 span | 69.5538058 span | 70.8661417 span | 72.1784777 span | 73.4908136 span | 74.8031496 span | 76.1154856 span | 77.4278215 span | 78.7401575 span | 80.0524934 span | 81.3648294 span | 82.6771654 span | 83.9895013 span | 85.3018373 span | 86.6141732 span | 87.9265092 span | 89.2388451 span | 90.5511811 span | 91.8635171 span | 93.1758530 span | 94.4881890 span | 95.8005249 span | 97.1128609 span | 98.4251969 span | 99.7375328 span | 101.0498688 span | 102.3622047 span | 103.6745407 span | 104.9868766 span | 106.2992126 span | 107.6115486 span | 108.9238845 span | 110.2362205 span | 111.5485564 span | 112.8608924 span | 114.1732283 span | 115.4855643 span | 116.7979003 span | 118.1102362 span | 119.4225722 span | 120.7349081 span | 122.0472441 span | 123.3595801 span | 124.6719160 span | 125.9842520 span | 127.2965879 span | 128.6089239 span | 129.9212598 span | 131.2335958 span |
≡ 0.30 m
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot, metric (short) | smf | ≡ 0.30 m | ≡ 0.30 m | Metric system SI |
feet, metric (short) | spans | feet, metric (short) | spans |
---|---|---|---|
1 | = 1.3123359580052 | 4 | = 5.249343832021 |
1.5 | = 1.9685039370079 | 4.5 | = 5.9055118110236 |
2 | = 2.6246719160105 | 5 | = 6.5616797900262 |
2.5 | = 3.2808398950131 | 5.5 | = 7.2178477690289 |
3 | = 3.9370078740157 | 6 | = 7.8740157480315 |
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 | feet, metric (short) | spans | feet, metric (short) |
---|---|---|---|
1 | = 0.762 | 4 | = 3.048 |
1.5 | = 1.143 | 4.5 | = 3.429 |
2 | = 1.524 | 5 | = 3.81 |
2.5 | = 1.905 | 5.5 | = 4.191 |
3 | = 2.286 | 6 | = 4.572 |
feet, metric (short) | spans |
---|---|
1 | = 1.3123360 |
0.762 | = 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 …) |