| cape foot | 1 ft (Cape) | 2 ft (Cape) | 3 ft (Cape) | 4 ft (Cape) | 5 ft (Cape) | 6 ft (Cape) | 7 ft (Cape) | 8 ft (Cape) | 9 ft (Cape) | 10 ft (Cape) | 11 ft (Cape) | 12 ft (Cape) | 13 ft (Cape) | 14 ft (Cape) | 15 ft (Cape) | 16 ft (Cape) | 17 ft (Cape) | 18 ft (Cape) | 19 ft (Cape) | 20 ft (Cape) | 21 ft (Cape) | 22 ft (Cape) | 23 ft (Cape) | 24 ft (Cape) | 25 ft (Cape) | 26 ft (Cape) | 27 ft (Cape) | 28 ft (Cape) | 29 ft (Cape) | 30 ft (Cape) | 31 ft (Cape) | 32 ft (Cape) | 33 ft (Cape) | 34 ft (Cape) | 35 ft (Cape) | 36 ft (Cape) | 37 ft (Cape) | 38 ft (Cape) | 39 ft (Cape) | 40 ft (Cape) | 41 ft (Cape) | 42 ft (Cape) | 43 ft (Cape) | 44 ft (Cape) | 45 ft (Cape) | 46 ft (Cape) | 47 ft (Cape) | 48 ft (Cape) | 49 ft (Cape) | 50 ft (Cape) | 51 ft (Cape) | 52 ft (Cape) | 53 ft (Cape) | 54 ft (Cape) | 55 ft (Cape) | 56 ft (Cape) | 57 ft (Cape) | 58 ft (Cape) | 59 ft (Cape) | 60 ft (Cape) | 61 ft (Cape) | 62 ft (Cape) | 63 ft (Cape) | 64 ft (Cape) | 65 ft (Cape) | 66 ft (Cape) | 67 ft (Cape) | 68 ft (Cape) | 69 ft (Cape) | 70 ft (Cape) | 71 ft (Cape) | 72 ft (Cape) | 73 ft (Cape) | 74 ft (Cape) | 75 ft (Cape) | 76 ft (Cape) | 77 ft (Cape) | 78 ft (Cape) | 79 ft (Cape) | 80 ft (Cape) | 81 ft (Cape) | 82 ft (Cape) | 83 ft (Cape) | 84 ft (Cape) | 85 ft (Cape) | 86 ft (Cape) | 87 ft (Cape) | 88 ft (Cape) | 89 ft (Cape) | 90 ft (Cape) | 91 ft (Cape) | 92 ft (Cape) | 93 ft (Cape) | 94 ft (Cape) | 95 ft (Cape) | 96 ft (Cape) | 97 ft (Cape) | 98 ft (Cape) | 99 ft (Cape) | 100 ft (Cape) |
| fermtometer | 3.1485557516 × 1014 fm | 6.2971115032 × 1014 fm | 9.4456672548 × 1014 fm | 1.25942230064 × 1015 fm | 1.5742778758 × 1015 fm | 1.88913345096 × 1015 fm | 2.20398902612 × 1015 fm | 2.51884460128 × 1015 fm | 2.83370017644 × 1015 fm | 3.1485557516 × 1015 fm | 3.46341132676 × 1015 fm | 3.77826690192 × 1015 fm | 4.09312247708 × 1015 fm | 4.40797805224 × 1015 fm | 4.7228336274 × 1015 fm | 5.03768920256 × 1015 fm | 5.35254477772 × 1015 fm | 5.66740035288 × 1015 fm | 5.98225592804 × 1015 fm | 6.2971115032 × 1015 fm | 6.61196707836 × 1015 fm | 6.92682265352 × 1015 fm | 7.24167822868 × 1015 fm | 7.55653380384 × 1015 fm | 7.871389379 × 1015 fm | 8.18624495416 × 1015 fm | 8.50110052932 × 1015 fm | 8.81595610448 × 1015 fm | 9.13081167964 × 1015 fm | 9.4456672548 × 1015 fm | 9.76052282996 × 1015 fm | 1.007537840512 × 1016 fm | 1.039023398028 × 1016 fm | 1.070508955544 × 1016 fm | 1.10199451306 × 1016 fm | 1.133480070576 × 1016 fm | 1.164965628092 × 1016 fm | 1.196451185608 × 1016 fm | 1.227936743124 × 1016 fm | 1.25942230064 × 1016 fm | 1.290907858156 × 1016 fm | 1.322393415672 × 1016 fm | 1.353878973188 × 1016 fm | 1.385364530704 × 1016 fm | 1.41685008822 × 1016 fm | 1.448335645736 × 1016 fm | 1.479821203252 × 1016 fm | 1.511306760768 × 1016 fm | 1.542792318284 × 1016 fm | 1.5742778758 × 1016 fm | 1.605763433316 × 1016 fm | 1.637248990832 × 1016 fm | 1.668734548348 × 1016 fm | 1.700220105864 × 1016 fm | 1.73170566338 × 1016 fm | 1.763191220896 × 1016 fm | 1.794676778412 × 1016 fm | 1.826162335928 × 1016 fm | 1.857647893444 × 1016 fm | 1.88913345096 × 1016 fm | 1.920619008476 × 1016 fm | 1.952104565992 × 1016 fm | 1.983590123508 × 1016 fm | 2.015075681024 × 1016 fm | 2.04656123854 × 1016 fm | 2.078046796056 × 1016 fm | 2.109532353572 × 1016 fm | 2.141017911088 × 1016 fm | 2.172503468604 × 1016 fm | 2.20398902612 × 1016 fm | 2.235474583636 × 1016 fm | 2.266960141152 × 1016 fm | 2.298445698668 × 1016 fm | 2.329931256184 × 1016 fm | 2.3614168137 × 1016 fm | 2.392902371216 × 1016 fm | 2.424387928732 × 1016 fm | 2.455873486248 × 1016 fm | 2.487359043764 × 1016 fm | 2.51884460128 × 1016 fm | 2.550330158796 × 1016 fm | 2.581815716312 × 1016 fm | 2.613301273828 × 1016 fm | 2.644786831344 × 1016 fm | 2.67627238886 × 1016 fm | 2.707757946376 × 1016 fm | 2.739243503892 × 1016 fm | 2.770729061408 × 1016 fm | 2.802214618924 × 1016 fm | 2.83370017644 × 1016 fm | 2.865185733956 × 1016 fm | 2.896671291472 × 1016 fm | 2.928156848988 × 1016 fm | 2.959642406504 × 1016 fm | 2.99112796402 × 1016 fm | 3.022613521536 × 1016 fm | 3.054099079052 × 1016 fm | 3.085584636568 × 1016 fm | 3.117070194084 × 1016 fm | 3.1485557516 × 1016 fm |
A Cape foot is a unit of length defined as 1.0330 English feet (and equal to 12.396 English inches, or 0.31485557516 meters) found in documents of belts and diagrams relating to landed property.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| cape foot | ft (Cape) | Legally defined as 1.033 English feet in 1859 | ≈ 0.314858 m | Other (Length) |
| cape feet | fermtometers | cape feet | fermtometers |
|---|---|---|---|
| 1 | ≈ 3.1485557516E+14 | 4 | ≈ 1.25942230064E+15 |
| 1.5 | ≈ 4.7228336274E+14 | 4.5 | ≈ 1.41685008822E+15 |
| 2 | ≈ 6.2971115032E+14 | 5 | ≈ 1.5742778758E+15 |
| 2.5 | ≈ 7.871389379E+14 | 5.5 | ≈ 1.73170566338E+15 |
| 3 | ≈ 9.4456672548E+14 | 6 | ≈ 1.88913345096E+15 |
The femtometre (American spelling femtometer, symbol fm derived from the Danish and Norwegian word femten, "fifteen"+Ancient Greek: μέτρον, metrοn, "unit of measurement") is an SI unit of length equal to 10−15 metres, which means a quadrillionth of one. This distance can also be called a fermi and was so named in honour of physicist Enrico Fermi, as it is a typical length-scale of nuclear physics.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| fermtometer | fm | 1000 attometres = 1 femtometre = 1 fermi = 0.001 picometre = 1×10−15 metres 1000000 femtometres = 10 ångström = 1 nanometre. | ≡ 1×10-15 m | Metric system SI |
| fermtometers | cape feet | fermtometers | cape feet |
|---|---|---|---|
| 1 | ≈ 3.1760593710047E-15 | 4 | ≈ 1.2704237484019E-14 |
| 1.5 | ≈ 4.7640890565071E-15 | 4.5 | ≈ 1.4292267169521E-14 |
| 2 | ≈ 6.3521187420094E-15 | 5 | ≈ 1.5880296855024E-14 |
| 2.5 | ≈ 7.9401484275118E-15 | 5.5 | ≈ 1.7468326540526E-14 |
| 3 | ≈ 9.5281781130142E-15 | 6 | ≈ 1.9056356226028E-14 |
| cape feet | fermtometers |
|---|---|
| 1 | ≈ 3.1485557516 × 1014 |
| 3.1760593710047 × 10-15 | ≈ 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 …) |