foot, metric | 1 mf | 2 mf | 3 mf | 4 mf | 5 mf | 6 mf | 7 mf | 8 mf | 9 mf | 10 mf | 11 mf | 12 mf | 13 mf | 14 mf | 15 mf | 16 mf | 17 mf | 18 mf | 19 mf | 20 mf | 21 mf | 22 mf | 23 mf | 24 mf | 25 mf | 26 mf | 27 mf | 28 mf | 29 mf | 30 mf | 31 mf | 32 mf | 33 mf | 34 mf | 35 mf | 36 mf | 37 mf | 38 mf | 39 mf | 40 mf | 41 mf | 42 mf | 43 mf | 44 mf | 45 mf | 46 mf | 47 mf | 48 mf | 49 mf | 50 mf | 51 mf | 52 mf | 53 mf | 54 mf | 55 mf | 56 mf | 57 mf | 58 mf | 59 mf | 60 mf | 61 mf | 62 mf | 63 mf | 64 mf | 65 mf | 66 mf | 67 mf | 68 mf | 69 mf | 70 mf | 71 mf | 72 mf | 73 mf | 74 mf | 75 mf | 76 mf | 77 mf | 78 mf | 79 mf | 80 mf | 81 mf | 82 mf | 83 mf | 84 mf | 85 mf | 86 mf | 87 mf | 88 mf | 89 mf | 90 mf | 91 mf | 92 mf | 93 mf | 94 mf | 95 mf | 96 mf | 97 mf | 98 mf | 99 mf | 100 mf |
ell | 0.2766647 ell | 0.5533294 ell | 0.8299941 ell | 1.1066588 ell | 1.3833236 ell | 1.6599883 ell | 1.9366530 ell | 2.2133177 ell | 2.4899824 ell | 2.7666471 ell | 3.0433118 ell | 3.3199765 ell | 3.5966413 ell | 3.8733060 ell | 4.1499707 ell | 4.4266354 ell | 4.7033001 ell | 4.9799648 ell | 5.2566295 ell | 5.5332942 ell | 5.8099590 ell | 6.0866237 ell | 6.3632884 ell | 6.6399531 ell | 6.9166178 ell | 7.1932825 ell | 7.4699472 ell | 7.7466119 ell | 8.0232767 ell | 8.2999414 ell | 8.5766061 ell | 8.8532708 ell | 9.1299355 ell | 9.4066002 ell | 9.6832649 ell | 9.9599296 ell | 10.2365944 ell | 10.5132591 ell | 10.7899238 ell | 11.0665885 ell | 11.3432532 ell | 11.6199179 ell | 11.8965826 ell | 12.1732473 ell | 12.4499120 ell | 12.7265768 ell | 13.0032415 ell | 13.2799062 ell | 13.5565709 ell | 13.8332356 ell | 14.1099003 ell | 14.3865650 ell | 14.6632297 ell | 14.9398945 ell | 15.2165592 ell | 15.4932239 ell | 15.7698886 ell | 16.0465533 ell | 16.3232180 ell | 16.5998827 ell | 16.8765474 ell | 17.1532122 ell | 17.4298769 ell | 17.7065416 ell | 17.9832063 ell | 18.2598710 ell | 18.5365357 ell | 18.8132004 ell | 19.0898651 ell | 19.3665299 ell | 19.6431946 ell | 19.9198593 ell | 20.1965240 ell | 20.4731887 ell | 20.7498534 ell | 21.0265181 ell | 21.3031828 ell | 21.5798475 ell | 21.8565123 ell | 22.1331770 ell | 22.4098417 ell | 22.6865064 ell | 22.9631711 ell | 23.2398358 ell | 23.5165005 ell | 23.7931652 ell | 24.0698300 ell | 24.3464947 ell | 24.6231594 ell | 24.8998241 ell | 25.1764888 ell | 25.4531535 ell | 25.7298182 ell | 26.0064829 ell | 26.2831477 ell | 26.5598124 ell | 26.8364771 ell | 27.1131418 ell | 27.3898065 ell | 27.6664712 ell |
A metric foot is a nickname for a preferred number length of 3 basic modules (3 M), or 30 centimetres (11.811 in). The 30 cm metric ruler was a similar length to the traditional imperial one-foot ruler. A metric foot is 4.8 millimetres (0.189 in) shorter than an imperial foot.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot, metric | mf | ≡ √ 1⁄10 m | ≈ 0.31622776602 m | Metric system Non-SI |
feet, metric | ell | feet, metric | ell |
---|---|---|---|
1 | ≈ 0.27666471217848 | 4 | ≈ 1.1066588487139 |
1.5 | ≈ 0.41499706826772 | 4.5 | ≈ 1.2449912048031 |
2 | ≈ 0.55332942435696 | 5 | ≈ 1.3833235608924 |
2.5 | ≈ 0.69166178044619 | 5.5 | ≈ 1.5216559169816 |
3 | ≈ 0.82999413653543 | 6 | ≈ 1.6599882730709 |
An ell (from Proto-Germanic *alinō, cognate with Latin ulna) is a unit of measurement, originally a cubit, i.e., approximating the length of a man's arm from the elbow ("elbow" means the bend or bow of the ell or arm) to the tip of the middle finger, or about 18 inches (457 mm); in later usage, any of several longer units.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
ell | ell | ≡ 45 in (In England usually) | = 1.143 m | Other (Length) |
ell | feet, metric | ell | feet, metric |
---|---|---|---|
1 | ≈ 3.6144833655363 | 4 | ≈ 14.457933462145 |
1.5 | ≈ 5.4217250483045 | 4.5 | ≈ 16.265175144913 |
2 | ≈ 7.2289667310726 | 5 | ≈ 18.072416827682 |
2.5 | ≈ 9.0362084138408 | 5.5 | ≈ 19.87965851045 |
3 | ≈ 10.843450096609 | 6 | ≈ 21.686900193218 |
feet, metric | ell |
---|---|
1 | ≈ 0.2766647 |
3.6144834 | ≈ 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 …) |