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 |
inch | 3.9370078740157 × 10-14 in | 7.8740157480315 × 10-14 in | 1.1811023622047 × 10-13 in | 1.5748031496063 × 10-13 in | 1.9685039370079 × 10-13 in | 2.3622047244094 × 10-13 in | 2.755905511811 × 10-13 in | 3.1496062992126 × 10-13 in | 3.5433070866142 × 10-13 in | 3.9370078740157 × 10-13 in | 4.3307086614173 × 10-13 in | 4.7244094488189 × 10-13 in | 5.1181102362205 × 10-13 in | 5.511811023622 × 10-13 in | 5.9055118110236 × 10-13 in | 6.2992125984252 × 10-13 in | 6.6929133858268 × 10-13 in | 7.0866141732283 × 10-13 in | 7.4803149606299 × 10-13 in | 7.8740157480315 × 10-13 in | 8.2677165354331 × 10-13 in | 8.6614173228346 × 10-13 in | 9.0551181102362 × 10-13 in | 9.4488188976378 × 10-13 in | 9.8425196850394 × 10-13 in | 1.0236220472441 × 10-12 in | 1.0629921259843 × 10-12 in | 1.1023622047244 × 10-12 in | 1.1417322834646 × 10-12 in | 1.1811023622047 × 10-12 in | 1.2204724409449 × 10-12 in | 1.259842519685 × 10-12 in | 1.2992125984252 × 10-12 in | 1.3385826771654 × 10-12 in | 1.3779527559055 × 10-12 in | 1.4173228346457 × 10-12 in | 1.4566929133858 × 10-12 in | 1.496062992126 × 10-12 in | 1.5354330708661 × 10-12 in | 1.5748031496063 × 10-12 in | 1.6141732283465 × 10-12 in | 1.6535433070866 × 10-12 in | 1.6929133858268 × 10-12 in | 1.7322834645669 × 10-12 in | 1.7716535433071 × 10-12 in | 1.8110236220472 × 10-12 in | 1.8503937007874 × 10-12 in | 1.8897637795276 × 10-12 in | 1.9291338582677 × 10-12 in | 1.9685039370079 × 10-12 in | 2.007874015748 × 10-12 in | 2.0472440944882 × 10-12 in | 2.0866141732283 × 10-12 in | 2.1259842519685 × 10-12 in | 2.1653543307087 × 10-12 in | 2.2047244094488 × 10-12 in | 2.244094488189 × 10-12 in | 2.2834645669291 × 10-12 in | 2.3228346456693 × 10-12 in | 2.3622047244094 × 10-12 in | 2.4015748031496 × 10-12 in | 2.4409448818898 × 10-12 in | 2.4803149606299 × 10-12 in | 2.5196850393701 × 10-12 in | 2.5590551181102 × 10-12 in | 2.5984251968504 × 10-12 in | 2.6377952755906 × 10-12 in | 2.6771653543307 × 10-12 in | 2.7165354330709 × 10-12 in | 2.755905511811 × 10-12 in | 2.7952755905512 × 10-12 in | 2.8346456692913 × 10-12 in | 2.8740157480315 × 10-12 in | 2.9133858267717 × 10-12 in | 2.9527559055118 × 10-12 in | 2.992125984252 × 10-12 in | 3.0314960629921 × 10-12 in | 3.0708661417323 × 10-12 in | 3.1102362204724 × 10-12 in | 3.1496062992126 × 10-12 in | 3.1889763779528 × 10-12 in | 3.2283464566929 × 10-12 in | 3.2677165354331 × 10-12 in | 3.3070866141732 × 10-12 in | 3.3464566929134 × 10-12 in | 3.3858267716535 × 10-12 in | 3.4251968503937 × 10-12 in | 3.4645669291339 × 10-12 in | 3.503937007874 × 10-12 in | 3.5433070866142 × 10-12 in | 3.5826771653543 × 10-12 in | 3.6220472440945 × 10-12 in | 3.6614173228346 × 10-12 in | 3.7007874015748 × 10-12 in | 3.740157480315 × 10-12 in | 3.7795275590551 × 10-12 in | 3.8188976377953 × 10-12 in | 3.8582677165354 × 10-12 in | 3.8976377952756 × 10-12 in | 3.9370078740157 × 10-12 in |
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 | inches | fermtometers | inches |
---|---|---|---|
1 | ≡ 3.9370078740157E-14 | 4 | ≡ 1.5748031496063E-13 |
1.5 | ≡ 5.9055118110236E-14 | 4.5 | ≡ 1.7716535433071E-13 |
2 | ≡ 7.8740157480315E-14 | 5 | ≡ 1.9685039370079E-13 |
2.5 | ≡ 9.8425196850394E-14 | 5.5 | ≡ 2.1653543307087E-13 |
3 | ≡ 1.1811023622047E-13 | 6 | ≡ 2.3622047244094E-13 |
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 | fermtometers | inches | fermtometers |
---|---|---|---|
1 | ≡ 25400000000000 | 4 | ≡ 1.016E+14 |
1.5 | ≡ 38100000000000 | 4.5 | ≡ 1.143E+14 |
2 | ≡ 50800000000000 | 5 | ≡ 1.27E+14 |
2.5 | ≡ 63500000000000 | 5.5 | ≡ 1.397E+14 |
3 | ≡ 76200000000000 | 6 | ≡ 1.524E+14 |
fermtometers | inches |
---|---|
1 | ≡ 3.9370078740157 × 10-14 |
25 400 000 000 000 | ≡ 1 |
You can find the conversion in other languages in the following:
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 …) |