fermtometer | 1 fm | 2 fm | 3 fm | 4 fm | 5 fm | 6 fm | 7 fm | 8 fm | 9 fm | 10 fm | 11 fm | 12 fm | 13 fm | 14 fm | 15 fm | 16 fm | 17 fm | 18 fm | 19 fm | 20 fm | 21 fm | 22 fm | 23 fm | 24 fm | 25 fm | 26 fm | 27 fm | 28 fm | 29 fm | 30 fm | 31 fm | 32 fm | 33 fm | 34 fm | 35 fm | 36 fm | 37 fm | 38 fm | 39 fm | 40 fm | 41 fm | 42 fm | 43 fm | 44 fm | 45 fm | 46 fm | 47 fm | 48 fm | 49 fm | 50 fm | 51 fm | 52 fm | 53 fm | 54 fm | 55 fm | 56 fm | 57 fm | 58 fm | 59 fm | 60 fm | 61 fm | 62 fm | 63 fm | 64 fm | 65 fm | 66 fm | 67 fm | 68 fm | 69 fm | 70 fm | 71 fm | 72 fm | 73 fm | 74 fm | 75 fm | 76 fm | 77 fm | 78 fm | 79 fm | 80 fm | 81 fm | 82 fm | 83 fm | 84 fm | 85 fm | 86 fm | 87 fm | 88 fm | 89 fm | 90 fm | 91 fm | 92 fm | 93 fm | 94 fm | 95 fm | 96 fm | 97 fm | 98 fm | 99 fm | 100 fm |
cape foot | 3.1760593710047 × 10-15 ft (Cape) | 6.3521187420094 × 10-15 ft (Cape) | 9.5281781130142 × 10-15 ft (Cape) | 1.2704237484019 × 10-14 ft (Cape) | 1.5880296855024 × 10-14 ft (Cape) | 1.9056356226028 × 10-14 ft (Cape) | 2.2232415597033 × 10-14 ft (Cape) | 2.5408474968038 × 10-14 ft (Cape) | 2.8584534339043 × 10-14 ft (Cape) | 3.1760593710047 × 10-14 ft (Cape) | 3.4936653081052 × 10-14 ft (Cape) | 3.8112712452057 × 10-14 ft (Cape) | 4.1288771823061 × 10-14 ft (Cape) | 4.4464831194066 × 10-14 ft (Cape) | 4.7640890565071 × 10-14 ft (Cape) | 5.0816949936076 × 10-14 ft (Cape) | 5.399300930708 × 10-14 ft (Cape) | 5.7169068678085 × 10-14 ft (Cape) | 6.034512804909 × 10-14 ft (Cape) | 6.3521187420094 × 10-14 ft (Cape) | 6.6697246791099 × 10-14 ft (Cape) | 6.9873306162104 × 10-14 ft (Cape) | 7.3049365533109 × 10-14 ft (Cape) | 7.6225424904113 × 10-14 ft (Cape) | 7.9401484275118 × 10-14 ft (Cape) | 8.2577543646123 × 10-14 ft (Cape) | 8.5753603017128 × 10-14 ft (Cape) | 8.8929662388132 × 10-14 ft (Cape) | 9.2105721759137 × 10-14 ft (Cape) | 9.5281781130142 × 10-14 ft (Cape) | 9.8457840501146 × 10-14 ft (Cape) | 1.0163389987215 × 10-13 ft (Cape) | 1.0480995924316 × 10-13 ft (Cape) | 1.0798601861416 × 10-13 ft (Cape) | 1.1116207798517 × 10-13 ft (Cape) | 1.1433813735617 × 10-13 ft (Cape) | 1.1751419672717 × 10-13 ft (Cape) | 1.2069025609818 × 10-13 ft (Cape) | 1.2386631546918 × 10-13 ft (Cape) | 1.2704237484019 × 10-13 ft (Cape) | 1.3021843421119 × 10-13 ft (Cape) | 1.333944935822 × 10-13 ft (Cape) | 1.365705529532 × 10-13 ft (Cape) | 1.3974661232421 × 10-13 ft (Cape) | 1.4292267169521 × 10-13 ft (Cape) | 1.4609873106622 × 10-13 ft (Cape) | 1.4927479043722 × 10-13 ft (Cape) | 1.5245084980823 × 10-13 ft (Cape) | 1.5562690917923 × 10-13 ft (Cape) | 1.5880296855024 × 10-13 ft (Cape) | 1.6197902792124 × 10-13 ft (Cape) | 1.6515508729225 × 10-13 ft (Cape) | 1.6833114666325 × 10-13 ft (Cape) | 1.7150720603426 × 10-13 ft (Cape) | 1.7468326540526 × 10-13 ft (Cape) | 1.7785932477626 × 10-13 ft (Cape) | 1.8103538414727 × 10-13 ft (Cape) | 1.8421144351827 × 10-13 ft (Cape) | 1.8738750288928 × 10-13 ft (Cape) | 1.9056356226028 × 10-13 ft (Cape) | 1.9373962163129 × 10-13 ft (Cape) | 1.9691568100229 × 10-13 ft (Cape) | 2.000917403733 × 10-13 ft (Cape) | 2.032677997443 × 10-13 ft (Cape) | 2.0644385911531 × 10-13 ft (Cape) | 2.0961991848631 × 10-13 ft (Cape) | 2.1279597785732 × 10-13 ft (Cape) | 2.1597203722832 × 10-13 ft (Cape) | 2.1914809659933 × 10-13 ft (Cape) | 2.2232415597033 × 10-13 ft (Cape) | 2.2550021534134 × 10-13 ft (Cape) | 2.2867627471234 × 10-13 ft (Cape) | 2.3185233408334 × 10-13 ft (Cape) | 2.3502839345435 × 10-13 ft (Cape) | 2.3820445282535 × 10-13 ft (Cape) | 2.4138051219636 × 10-13 ft (Cape) | 2.4455657156736 × 10-13 ft (Cape) | 2.4773263093837 × 10-13 ft (Cape) | 2.5090869030937 × 10-13 ft (Cape) | 2.5408474968038 × 10-13 ft (Cape) | 2.5726080905138 × 10-13 ft (Cape) | 2.6043686842239 × 10-13 ft (Cape) | 2.6361292779339 × 10-13 ft (Cape) | 2.667889871644 × 10-13 ft (Cape) | 2.699650465354 × 10-13 ft (Cape) | 2.7314110590641 × 10-13 ft (Cape) | 2.7631716527741 × 10-13 ft (Cape) | 2.7949322464842 × 10-13 ft (Cape) | 2.8266928401942 × 10-13 ft (Cape) | 2.8584534339043 × 10-13 ft (Cape) | 2.8902140276143 × 10-13 ft (Cape) | 2.9219746213243 × 10-13 ft (Cape) | 2.9537352150344 × 10-13 ft (Cape) | 2.9854958087444 × 10-13 ft (Cape) | 3.0172564024545 × 10-13 ft (Cape) | 3.0490169961645 × 10-13 ft (Cape) | 3.0807775898746 × 10-13 ft (Cape) | 3.1125381835846 × 10-13 ft (Cape) | 3.1442987772947 × 10-13 ft (Cape) | 3.1760593710047 × 10-13 ft (Cape) |
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 |
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 |
fermtometers | cape feet |
---|---|
1 | ≈ 3.1760593710047 × 10-15 |
3.1485557516 × 1014 | ≈ 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 …) |