| nanometer | 1 nm | 2 nm | 3 nm | 4 nm | 5 nm | 6 nm | 7 nm | 8 nm | 9 nm | 10 nm | 11 nm | 12 nm | 13 nm | 14 nm | 15 nm | 16 nm | 17 nm | 18 nm | 19 nm | 20 nm | 21 nm | 22 nm | 23 nm | 24 nm | 25 nm | 26 nm | 27 nm | 28 nm | 29 nm | 30 nm | 31 nm | 32 nm | 33 nm | 34 nm | 35 nm | 36 nm | 37 nm | 38 nm | 39 nm | 40 nm | 41 nm | 42 nm | 43 nm | 44 nm | 45 nm | 46 nm | 47 nm | 48 nm | 49 nm | 50 nm | 51 nm | 52 nm | 53 nm | 54 nm | 55 nm | 56 nm | 57 nm | 58 nm | 59 nm | 60 nm | 61 nm | 62 nm | 63 nm | 64 nm | 65 nm | 66 nm | 67 nm | 68 nm | 69 nm | 70 nm | 71 nm | 72 nm | 73 nm | 74 nm | 75 nm | 76 nm | 77 nm | 78 nm | 79 nm | 80 nm | 81 nm | 82 nm | 83 nm | 84 nm | 85 nm | 86 nm | 87 nm | 88 nm | 89 nm | 90 nm | 91 nm | 92 nm | 93 nm | 94 nm | 95 nm | 96 nm | 97 nm | 98 nm | 99 nm | 100 nm |
| fathom | 5.4680664916885 × 10-10 ftm | 1.0936132983377 × 10-9 ftm | 1.6404199475066 × 10-9 ftm | 2.1872265966754 × 10-9 ftm | 2.7340332458443 × 10-9 ftm | 3.2808398950131 × 10-9 ftm | 3.827646544182 × 10-9 ftm | 4.3744531933508 × 10-9 ftm | 4.9212598425197 × 10-9 ftm | 5.4680664916885 × 10-9 ftm | 6.0148731408574 × 10-9 ftm | 6.5616797900262 × 10-9 ftm | 7.1084864391951 × 10-9 ftm | 7.655293088364 × 10-9 ftm | 8.2020997375328 × 10-9 ftm | 8.7489063867017 × 10-9 ftm | 9.2957130358705 × 10-9 ftm | 9.8425196850394 × 10-9 ftm | 1.0389326334208 × 10-8 ftm | 1.0936132983377 × 10-8 ftm | 1.1482939632546 × 10-8 ftm | 1.2029746281715 × 10-8 ftm | 1.2576552930884 × 10-8 ftm | 1.3123359580052 × 10-8 ftm | 1.3670166229221 × 10-8 ftm | 1.421697287839 × 10-8 ftm | 1.4763779527559 × 10-8 ftm | 1.5310586176728 × 10-8 ftm | 1.5857392825897 × 10-8 ftm | 1.6404199475066 × 10-8 ftm | 1.6951006124234 × 10-8 ftm | 1.7497812773403 × 10-8 ftm | 1.8044619422572 × 10-8 ftm | 1.8591426071741 × 10-8 ftm | 1.913823272091 × 10-8 ftm | 1.9685039370079 × 10-8 ftm | 2.0231846019248 × 10-8 ftm | 2.0778652668416 × 10-8 ftm | 2.1325459317585 × 10-8 ftm | 2.1872265966754 × 10-8 ftm | 2.2419072615923 × 10-8 ftm | 2.2965879265092 × 10-8 ftm | 2.3512685914261 × 10-8 ftm | 2.405949256343 × 10-8 ftm | 2.4606299212598 × 10-8 ftm | 2.5153105861767 × 10-8 ftm | 2.5699912510936 × 10-8 ftm | 2.6246719160105 × 10-8 ftm | 2.6793525809274 × 10-8 ftm | 2.7340332458443 × 10-8 ftm | 2.7887139107612 × 10-8 ftm | 2.843394575678 × 10-8 ftm | 2.8980752405949 × 10-8 ftm | 2.9527559055118 × 10-8 ftm | 3.0074365704287 × 10-8 ftm | 3.0621172353456 × 10-8 ftm | 3.1167979002625 × 10-8 ftm | 3.1714785651794 × 10-8 ftm | 3.2261592300962 × 10-8 ftm | 3.2808398950131 × 10-8 ftm | 3.33552055993 × 10-8 ftm | 3.3902012248469 × 10-8 ftm | 3.4448818897638 × 10-8 ftm | 3.4995625546807 × 10-8 ftm | 3.5542432195976 × 10-8 ftm | 3.6089238845144 × 10-8 ftm | 3.6636045494313 × 10-8 ftm | 3.7182852143482 × 10-8 ftm | 3.7729658792651 × 10-8 ftm | 3.827646544182 × 10-8 ftm | 3.8823272090989 × 10-8 ftm | 3.9370078740157 × 10-8 ftm | 3.9916885389326 × 10-8 ftm | 4.0463692038495 × 10-8 ftm | 4.1010498687664 × 10-8 ftm | 4.1557305336833 × 10-8 ftm | 4.2104111986002 × 10-8 ftm | 4.2650918635171 × 10-8 ftm | 4.3197725284339 × 10-8 ftm | 4.3744531933508 × 10-8 ftm | 4.4291338582677 × 10-8 ftm | 4.4838145231846 × 10-8 ftm | 4.5384951881015 × 10-8 ftm | 4.5931758530184 × 10-8 ftm | 4.6478565179353 × 10-8 ftm | 4.7025371828521 × 10-8 ftm | 4.757217847769 × 10-8 ftm | 4.8118985126859 × 10-8 ftm | 4.8665791776028 × 10-8 ftm | 4.9212598425197 × 10-8 ftm | 4.9759405074366 × 10-8 ftm | 5.0306211723535 × 10-8 ftm | 5.0853018372703 × 10-8 ftm | 5.1399825021872 × 10-8 ftm | 5.1946631671041 × 10-8 ftm | 5.249343832021 × 10-8 ftm | 5.3040244969379 × 10-8 ftm | 5.3587051618548 × 10-8 ftm | 5.4133858267717 × 10-8 ftm | 5.4680664916885 × 10-8 ftm |
The nanometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: nm) or nanometer (American spelling) is a unit of length in the metric system, equal to one billionth of a metre (0.000000001 m). The name combines the SI prefix nano- (from the Ancient Greek νάνος, nanos, "dwarf") with the parent unit name metre (from Greek μέτρον, metrοn, "unit of measurement"). It can be written in scientific notation as 1×10−9 m, in engineering notation as 1 E−9 m, and is simply 1/1000000000 metres.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| nanometer | nm | = 3.2808×10−9 ft | ≡ 1×10-9 m ≡ 0.000000001 m | Metric system SI |
| nanometers | fathoms | nanometers | fathoms |
|---|---|---|---|
| 1 | = 5.4680664916885E-10 | 4 | = 2.1872265966754E-9 |
| 1.5 | = 8.2020997375328E-10 | 4.5 | = 2.4606299212598E-9 |
| 2 | = 1.0936132983377E-9 | 5 | = 2.7340332458443E-9 |
| 2.5 | = 1.3670166229221E-9 | 5.5 | = 3.0074365704287E-9 |
| 3 | = 1.6404199475066E-9 | 6 | = 3.2808398950131E-9 |
A fathom is a unit of length in the imperial and the U.S. customary systems equal to 6 feet (1.8288 metres), used especially for measuring the depth of water.
There are two yards (6 feet) in an imperial fathom. Originally the span of a man's outstretched arms, the size of a fathom has varied slightly depending on whether it was defined as a thousandth of an (Admiralty) nautical mile or as a multiple of the imperial yard. Formerly, the term was used for any of several units of length varying around 5–5 1⁄2 feet.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| fathom | ftm | ≡ 6 ft | = 1.8288 m | Imperial/US |
| fathoms | nanometers | fathoms | nanometers |
|---|---|---|---|
| 1 | = 1828800000 | 4 | = 7315200000 |
| 1.5 | = 2743200000 | 4.5 | = 8229600000 |
| 2 | = 3657600000 | 5 | = 9144000000 |
| 2.5 | = 4572000000 | 5.5 | = 10058400000 |
| 3 | = 5486400000 | 6 | = 10972800000 |
| nanometers | fathoms |
|---|---|
| 1 | = 5.4680664916885 × 10-10 |
| 1 828 800 000 | = 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 …) |