| 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 |
| inch | 11.8110236 in | 23.6220472 in | 35.4330709 in | 47.2440945 in | 59.0551181 in | 70.8661417 in | 82.6771654 in | 94.4881890 in | 106.2992126 in | 118.1102362 in | 129.9212598 in | 141.7322835 in | 153.5433071 in | 165.3543307 in | 177.1653543 in | 188.9763780 in | 200.7874016 in | 212.5984252 in | 224.4094488 in | 236.2204724 in | 248.0314961 in | 259.8425197 in | 271.6535433 in | 283.4645669 in | 295.2755906 in | 307.0866142 in | 318.8976378 in | 330.7086614 in | 342.5196850 in | 354.3307087 in | 366.1417323 in | 377.9527559 in | 389.7637795 in | 401.5748031 in | 413.3858268 in | 425.1968504 in | 437.0078740 in | 448.8188976 in | 460.6299213 in | 472.4409449 in | 484.2519685 in | 496.0629921 in | 507.8740157 in | 519.6850394 in | 531.4960630 in | 543.3070866 in | 555.1181102 in | 566.9291339 in | 578.7401575 in | 590.5511811 in | 602.3622047 in | 614.1732283 in | 625.9842520 in | 637.7952756 in | 649.6062992 in | 661.4173228 in | 673.2283465 in | 685.0393701 in | 696.8503937 in | 708.6614173 in | 720.4724409 in | 732.2834646 in | 744.0944882 in | 755.9055118 in | 767.7165354 in | 779.5275591 in | 791.3385827 in | 803.1496063 in | 814.9606299 in | 826.7716535 in | 838.5826772 in | 850.3937008 in | 862.2047244 in | 874.0157480 in | 885.8267717 in | 897.6377953 in | 909.4488189 in | 921.2598425 in | 933.0708661 in | 944.8818898 in | 956.6929134 in | 968.5039370 in | 980.3149606 in | 992.1259843 in | 1,003.9370079 in | 1,015.7480315 in | 1,027.5590551 in | 1,039.3700787 in | 1,051.1811024 in | 1,062.9921260 in | 1,074.8031496 in | 1,086.6141732 in | 1,098.4251969 in | 1,110.2362205 in | 1,122.0472441 in | 1,133.8582677 in | 1,145.6692913 in | 1,157.4803150 in | 1,169.2913386 in | 1,181.1023622 in |
≡ 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) | inches | feet, metric (short) | inches |
|---|---|---|---|
| 1 | ≡ 11.811023622047 | 4 | ≡ 47.244094488189 |
| 1.5 | ≡ 17.716535433071 | 4.5 | ≡ 53.149606299213 |
| 2 | ≡ 23.622047244094 | 5 | ≡ 59.055118110236 |
| 2.5 | ≡ 29.527559055118 | 5.5 | ≡ 64.96062992126 |
| 3 | ≡ 35.433070866142 | 6 | ≡ 70.866141732283 |
The inch (abbreviation: in or ″) is a unit of length in the (British) imperial and United States customary systems of measurement now formally equal to 1⁄36 yard but usually understood as 1⁄12 of a foot. Derived from the Roman uncia ("twelfth"), inch is also sometimes used to translate related units in other measurement systems, usually understood as deriving from the width of the human thumb.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| inch | in | ≡ 2.54 cm ≡ 1⁄36 yd ≡ 1⁄12 ft | ≡ 0.0254 m | Imperial/US |
| inches | feet, metric (short) | inches | feet, metric (short) |
|---|---|---|---|
| 1 | ≡ 0.084666666666667 | 4 | ≡ 0.33866666666667 |
| 1.5 | ≡ 0.127 | 4.5 | ≡ 0.381 |
| 2 | ≡ 0.16933333333333 | 5 | ≡ 0.42333333333333 |
| 2.5 | ≡ 0.21166666666667 | 5.5 | ≡ 0.46566666666667 |
| 3 | ≡ 0.254 | 6 | ≡ 0.508 |
| feet, metric (short) | inches |
|---|---|
| 1 | ≡ 11.8110236 |
| 0.0846667 | ≡ 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 …) |