| light-second | 1 light-second | 2 light-second | 3 light-second | 4 light-second | 5 light-second | 6 light-second | 7 light-second | 8 light-second | 9 light-second | 10 light-second | 11 light-second | 12 light-second | 13 light-second | 14 light-second | 15 light-second | 16 light-second | 17 light-second | 18 light-second | 19 light-second | 20 light-second | 21 light-second | 22 light-second | 23 light-second | 24 light-second | 25 light-second | 26 light-second | 27 light-second | 28 light-second | 29 light-second | 30 light-second | 31 light-second | 32 light-second | 33 light-second | 34 light-second | 35 light-second | 36 light-second | 37 light-second | 38 light-second | 39 light-second | 40 light-second | 41 light-second | 42 light-second | 43 light-second | 44 light-second | 45 light-second | 46 light-second | 47 light-second | 48 light-second | 49 light-second | 50 light-second | 51 light-second | 52 light-second | 53 light-second | 54 light-second | 55 light-second | 56 light-second | 57 light-second | 58 light-second | 59 light-second | 60 light-second | 61 light-second | 62 light-second | 63 light-second | 64 light-second | 65 light-second | 66 light-second | 67 light-second | 68 light-second | 69 light-second | 70 light-second | 71 light-second | 72 light-second | 73 light-second | 74 light-second | 75 light-second | 76 light-second | 77 light-second | 78 light-second | 79 light-second | 80 light-second | 81 light-second | 82 light-second | 83 light-second | 84 light-second | 85 light-second | 86 light-second | 87 light-second | 88 light-second | 89 light-second | 90 light-second | 91 light-second | 92 light-second | 93 light-second | 94 light-second | 95 light-second | 96 light-second | 97 light-second | 98 light-second | 99 light-second | 100 light-second |
| rod | 59,610,367.056391 rd | 119,220,734.11278 rd | 178,831,101.16917 rd | 238,441,468.22556 rd | 298,051,835.28195 rd | 357,662,202.33834 rd | 417,272,569.39473 rd | 476,882,936.45113 rd | 536,493,303.50752 rd | 596,103,670.56391 rd | 655,714,037.6203 rd | 715,324,404.67669 rd | 774,934,771.73308 rd | 834,545,138.78947 rd | 894,155,505.84586 rd | 953,765,872.90225 rd | 1,013,376,239.9586 rd | 1,072,986,607.015 rd | 1,132,596,974.0714 rd | 1,192,207,341.1278 rd | 1,251,817,708.1842 rd | 1,311,428,075.2406 rd | 1,371,038,442.297 rd | 1,430,648,809.3534 rd | 1,490,259,176.4098 rd | 1,549,869,543.4662 rd | 1,609,479,910.5225 rd | 1,669,090,277.5789 rd | 1,728,700,644.6353 rd | 1,788,311,011.6917 rd | 1,847,921,378.7481 rd | 1,907,531,745.8045 rd | 1,967,142,112.8609 rd | 2,026,752,479.9173 rd | 2,086,362,846.9737 rd | 2,145,973,214.0301 rd | 2,205,583,581.0865 rd | 2,265,193,948.1428 rd | 2,324,804,315.1992 rd | 2,384,414,682.2556 rd | 2,444,025,049.312 rd | 2,503,635,416.3684 rd | 2,563,245,783.4248 rd | 2,622,856,150.4812 rd | 2,682,466,517.5376 rd | 2,742,076,884.594 rd | 2,801,687,251.6504 rd | 2,861,297,618.7068 rd | 2,920,907,985.7631 rd | 2,980,518,352.8195 rd | 3,040,128,719.8759 rd | 3,099,739,086.9323 rd | 3,159,349,453.9887 rd | 3,218,959,821.0451 rd | 3,278,570,188.1015 rd | 3,338,180,555.1579 rd | 3,397,790,922.2143 rd | 3,457,401,289.2707 rd | 3,517,011,656.327 rd | 3,576,622,023.3834 rd | 3,636,232,390.4398 rd | 3,695,842,757.4962 rd | 3,755,453,124.5526 rd | 3,815,063,491.609 rd | 3,874,673,858.6654 rd | 3,934,284,225.7218 rd | 3,993,894,592.7782 rd | 4,053,504,959.8346 rd | 4,113,115,326.891 rd | 4,172,725,693.9473 rd | 4,232,336,061.0037 rd | 4,291,946,428.0601 rd | 4,351,556,795.1165 rd | 4,411,167,162.1729 rd | 4,470,777,529.2293 rd | 4,530,387,896.2857 rd | 4,589,998,263.3421 rd | 4,649,608,630.3985 rd | 4,709,218,997.4549 rd | 4,768,829,364.5113 rd | 4,828,439,731.5676 rd | 4,888,050,098.624 rd | 4,947,660,465.6804 rd | 5,007,270,832.7368 rd | 5,066,881,199.7932 rd | 5,126,491,566.8496 rd | 5,186,101,933.906 rd | 5,245,712,300.9624 rd | 5,305,322,668.0188 rd | 5,364,933,035.0752 rd | 5,424,543,402.1316 rd | 5,484,153,769.1879 rd | 5,543,764,136.2443 rd | 5,603,374,503.3007 rd | 5,662,984,870.3571 rd | 5,722,595,237.4135 rd | 5,782,205,604.4699 rd | 5,841,815,971.5263 rd | 5,901,426,338.5827 rd | 5,961,036,705.6391 rd |
The light-second is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space in onesecond, and is equal to exactly 299792458 metres (just over 186282 miles).
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| light-second | ≡ Distance light travels in one second in vacuum | ≡ 299 792 458 m | Science - Astronomy (Length) |
| light-seconds | rods | light-seconds | rods |
|---|---|---|---|
| 1 | = 59610367.056391 | 4 | = 238441468.22556 |
| 1.5 | = 89415550.584586 | 4.5 | = 268246651.75376 |
| 2 | = 119220734.11278 | 5 | = 298051835.28195 |
| 2.5 | = 149025917.64098 | 5.5 | = 327857018.81015 |
| 3 | = 178831101.16917 | 6 | = 357662202.33834 |
The rod or perch or pole is a surveyors tool and unit of length equal to 5 1⁄2 yards, 16 1⁄2 feet, 1⁄320 of a statute mile or one-fourth of a surveyor's chain and 5.0292 meters.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| rod | rd | ≡ 16 1⁄2 ft | = 5.0292 m | Imperial/US |
| rods | light-seconds | rods | light-seconds |
|---|---|---|---|
| 1 | = 1.6775605475705E-8 | 4 | = 6.7102421902822E-8 |
| 1.5 | = 2.5163408213558E-8 | 4.5 | = 7.5490224640675E-8 |
| 2 | = 3.3551210951411E-8 | 5 | = 8.3878027378527E-8 |
| 2.5 | = 4.1939013689264E-8 | 5.5 | = 9.226583011638E-8 |
| 3 | = 5.0326816427116E-8 | 6 | = 1.0065363285423E-7 |
| light-seconds | rods |
|---|---|
| 1 | = 59,610,367.056391 |
| 1.6775605475705 × 10-8 | = 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 …) |