picometer | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm | 12 pm | 13 pm | 14 pm | 15 pm | 16 pm | 17 pm | 18 pm | 19 pm | 20 pm | 21 pm | 22 pm | 23 pm | 24 pm | 25 pm | 26 pm | 27 pm | 28 pm | 29 pm | 30 pm | 31 pm | 32 pm | 33 pm | 34 pm | 35 pm | 36 pm | 37 pm | 38 pm | 39 pm | 40 pm | 41 pm | 42 pm | 43 pm | 44 pm | 45 pm | 46 pm | 47 pm | 48 pm | 49 pm | 50 pm | 51 pm | 52 pm | 53 pm | 54 pm | 55 pm | 56 pm | 57 pm | 58 pm | 59 pm | 60 pm | 61 pm | 62 pm | 63 pm | 64 pm | 65 pm | 66 pm | 67 pm | 68 pm | 69 pm | 70 pm | 71 pm | 72 pm | 73 pm | 74 pm | 75 pm | 76 pm | 77 pm | 78 pm | 79 pm | 80 pm | 81 pm | 82 pm | 83 pm | 84 pm | 85 pm | 86 pm | 87 pm | 88 pm | 89 pm | 90 pm | 91 pm | 92 pm | 93 pm | 94 pm | 95 pm | 96 pm | 97 pm | 98 pm | 99 pm | 100 pm |
fermi | 1 000 fm | 2 000 fm | 3 000 fm | 4 000 fm | 5 000 fm | 6 000 fm | 7 000 fm | 8 000 fm | 9 000 fm | 10 000 fm | 11 000 fm | 12 000 fm | 13 000 fm | 14 000 fm | 15 000 fm | 16 000 fm | 17 000 fm | 18 000 fm | 19 000 fm | 20 000 fm | 21 000 fm | 22 000 fm | 23 000 fm | 24 000 fm | 25 000 fm | 26 000 fm | 27 000 fm | 28 000 fm | 29 000 fm | 30 000 fm | 31 000 fm | 32 000 fm | 33 000 fm | 34 000 fm | 35 000 fm | 36 000 fm | 37 000 fm | 38 000 fm | 39 000 fm | 40 000 fm | 41 000 fm | 42 000 fm | 43 000 fm | 44 000 fm | 45 000 fm | 46 000 fm | 47 000 fm | 48 000 fm | 49 000 fm | 50 000 fm | 51 000 fm | 52 000 fm | 53 000 fm | 54 000 fm | 55 000 fm | 56 000 fm | 57 000 fm | 58 000 fm | 59 000 fm | 60 000 fm | 61 000 fm | 62 000 fm | 63 000 fm | 64 000 fm | 65 000 fm | 66 000 fm | 67 000 fm | 68 000 fm | 69 000 fm | 70 000 fm | 71 000 fm | 72 000 fm | 73 000 fm | 74 000 fm | 75 000 fm | 76 000 fm | 77 000 fm | 78 000 fm | 79 000 fm | 80 000 fm | 81 000 fm | 82 000 fm | 83 000 fm | 84 000 fm | 85 000 fm | 86 000 fm | 87 000 fm | 88 000 fm | 89 000 fm | 90 000 fm | 91 000 fm | 92 000 fm | 93 000 fm | 94 000 fm | 95 000 fm | 96 000 fm | 97 000 fm | 98 000 fm | 99 000 fm | 100 000 fm |
The picometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: pm) or picometer (American spelling) is a unit of length in the metric system, equal to 1×10−12 m, or one trillionth ( 1 / 1000000000000 ) of a metre, which is the SI base unit of length.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
picometer | pm | ≡ 1×10-12 m | ≡ 1×10-12 m | Metric system SI |
picometers | fermi | picometers | fermi |
---|---|---|---|
1 | ≡ 1000 | 4 | ≡ 4000 |
1.5 | ≡ 1500 | 4.5 | ≡ 4500 |
2 | ≡ 2000 | 5 | ≡ 5000 |
2.5 | ≡ 2500 | 5.5 | ≡ 5500 |
3 | ≡ 3000 | 6 | ≡ 6000 |
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 |
---|---|---|---|---|
fermi | fm | ≡ 1×10−15 m | ≡ 1×10−15 m | Metric system Non-SI |
fermi | picometers | fermi | picometers |
---|---|---|---|
1 | ≡ 0.001 | 4 | ≡ 0.004 |
1.5 | ≡ 0.0015 | 4.5 | ≡ 0.0045 |
2 | ≡ 0.002 | 5 | ≡ 0.005 |
2.5 | ≡ 0.0025 | 5.5 | ≡ 0.0055 |
3 | ≡ 0.003 | 6 | ≡ 0.006 |
picometers | fermi |
---|---|
1 | ≡ 1 000 |
0.001 | ≡ 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 …) |