| fathom | 1 ftm | 2 ftm | 3 ftm | 4 ftm | 5 ftm | 6 ftm | 7 ftm | 8 ftm | 9 ftm | 10 ftm | 11 ftm | 12 ftm | 13 ftm | 14 ftm | 15 ftm | 16 ftm | 17 ftm | 18 ftm | 19 ftm | 20 ftm | 21 ftm | 22 ftm | 23 ftm | 24 ftm | 25 ftm | 26 ftm | 27 ftm | 28 ftm | 29 ftm | 30 ftm | 31 ftm | 32 ftm | 33 ftm | 34 ftm | 35 ftm | 36 ftm | 37 ftm | 38 ftm | 39 ftm | 40 ftm | 41 ftm | 42 ftm | 43 ftm | 44 ftm | 45 ftm | 46 ftm | 47 ftm | 48 ftm | 49 ftm | 50 ftm | 51 ftm | 52 ftm | 53 ftm | 54 ftm | 55 ftm | 56 ftm | 57 ftm | 58 ftm | 59 ftm | 60 ftm | 61 ftm | 62 ftm | 63 ftm | 64 ftm | 65 ftm | 66 ftm | 67 ftm | 68 ftm | 69 ftm | 70 ftm | 71 ftm | 72 ftm | 73 ftm | 74 ftm | 75 ftm | 76 ftm | 77 ftm | 78 ftm | 79 ftm | 80 ftm | 81 ftm | 82 ftm | 83 ftm | 84 ftm | 85 ftm | 86 ftm | 87 ftm | 88 ftm | 89 ftm | 90 ftm | 91 ftm | 92 ftm | 93 ftm | 94 ftm | 95 ftm | 96 ftm | 97 ftm | 98 ftm | 99 ftm | 100 ftm |
| gigameter | 1.8288 × 10-9 Gm | 3.6576 × 10-9 Gm | 5.4864 × 10-9 Gm | 7.3152 × 10-9 Gm | 9.144 × 10-9 Gm | 1.09728 × 10-8 Gm | 1.28016 × 10-8 Gm | 1.46304 × 10-8 Gm | 1.64592 × 10-8 Gm | 1.8288 × 10-8 Gm | 2.01168 × 10-8 Gm | 2.19456 × 10-8 Gm | 2.37744 × 10-8 Gm | 2.56032 × 10-8 Gm | 2.7432 × 10-8 Gm | 2.92608 × 10-8 Gm | 3.10896 × 10-8 Gm | 3.29184 × 10-8 Gm | 3.47472 × 10-8 Gm | 3.6576 × 10-8 Gm | 3.84048 × 10-8 Gm | 4.02336 × 10-8 Gm | 4.20624 × 10-8 Gm | 4.38912 × 10-8 Gm | 4.572 × 10-8 Gm | 4.75488 × 10-8 Gm | 4.93776 × 10-8 Gm | 5.12064 × 10-8 Gm | 5.30352 × 10-8 Gm | 5.4864 × 10-8 Gm | 5.66928 × 10-8 Gm | 5.85216 × 10-8 Gm | 6.03504 × 10-8 Gm | 6.21792 × 10-8 Gm | 6.4008 × 10-8 Gm | 6.58368 × 10-8 Gm | 6.76656 × 10-8 Gm | 6.94944 × 10-8 Gm | 7.13232 × 10-8 Gm | 7.3152 × 10-8 Gm | 7.49808 × 10-8 Gm | 7.68096 × 10-8 Gm | 7.86384 × 10-8 Gm | 8.04672 × 10-8 Gm | 8.2296 × 10-8 Gm | 8.41248 × 10-8 Gm | 8.59536 × 10-8 Gm | 8.77824 × 10-8 Gm | 8.96112 × 10-8 Gm | 9.144 × 10-8 Gm | 9.32688 × 10-8 Gm | 9.50976 × 10-8 Gm | 9.69264 × 10-8 Gm | 9.87552 × 10-8 Gm | 1.00584 × 10-7 Gm | 1.024128 × 10-7 Gm | 1.042416 × 10-7 Gm | 1.060704 × 10-7 Gm | 1.078992 × 10-7 Gm | 1.09728 × 10-7 Gm | 1.115568 × 10-7 Gm | 1.133856 × 10-7 Gm | 1.152144 × 10-7 Gm | 1.170432 × 10-7 Gm | 1.18872 × 10-7 Gm | 1.207008 × 10-7 Gm | 1.225296 × 10-7 Gm | 1.243584 × 10-7 Gm | 1.261872 × 10-7 Gm | 1.28016 × 10-7 Gm | 1.298448 × 10-7 Gm | 1.316736 × 10-7 Gm | 1.335024 × 10-7 Gm | 1.353312 × 10-7 Gm | 1.3716 × 10-7 Gm | 1.389888 × 10-7 Gm | 1.408176 × 10-7 Gm | 1.426464 × 10-7 Gm | 1.444752 × 10-7 Gm | 1.46304 × 10-7 Gm | 1.481328 × 10-7 Gm | 1.499616 × 10-7 Gm | 1.517904 × 10-7 Gm | 1.536192 × 10-7 Gm | 1.55448 × 10-7 Gm | 1.572768 × 10-7 Gm | 1.591056 × 10-7 Gm | 1.609344 × 10-7 Gm | 1.627632 × 10-7 Gm | 1.64592 × 10-7 Gm | 1.664208 × 10-7 Gm | 1.682496 × 10-7 Gm | 1.700784 × 10-7 Gm | 1.719072 × 10-7 Gm | 1.73736 × 10-7 Gm | 1.755648 × 10-7 Gm | 1.773936 × 10-7 Gm | 1.792224 × 10-7 Gm | 1.810512 × 10-7 Gm | 1.8288 × 10-7 Gm |
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 | gigameters | fathoms | gigameters |
|---|---|---|---|
| 1 | = 1.8288E-9 | 4 | = 7.3152E-9 |
| 1.5 | = 2.7432E-9 | 4.5 | = 8.2296E-9 |
| 2 | = 3.6576E-9 | 5 | = 9.144E-9 |
| 2.5 | = 4.572E-9 | 5.5 | = 1.00584E-8 |
| 3 | = 5.4864E-9 | 6 | = 1.09728E-8 |
Gigameter or gigametre is equal to 1,000,000,000 meters or 106 meters (unit of length), comes from a combination of the metric prefix giga (G) and the SI unit of length meter (m). Plural name is gigameters.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| gigameter | Gm | ≡ 1×109 m | ≡ 1×109 m | Metric system SI |
| gigameters | fathoms | gigameters | fathoms |
|---|---|---|---|
| 1 | = 546806649.16885 | 4 | = 2187226596.6754 |
| 1.5 | = 820209973.75328 | 4.5 | = 2460629921.2598 |
| 2 | = 1093613298.3377 | 5 | = 2734033245.8443 |
| 2.5 | = 1367016622.9221 | 5.5 | = 3007436570.4287 |
| 3 | = 1640419947.5066 | 6 | = 3280839895.0131 |
| fathoms | gigameters |
|---|---|
| 1 | = 1.8288 × 10-9 |
| 546,806,649.16885 | = 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 …) |