| 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 |
| pace | 393,428,422.57218 pace | 786,856,845.14436 pace | 1,180,285,267.7165 pace | 1,573,713,690.2887 pace | 1,967,142,112.8609 pace | 2,360,570,535.4331 pace | 2,753,998,958.0052 pace | 3,147,427,380.5774 pace | 3,540,855,803.1496 pace | 3,934,284,225.7218 pace | 4,327,712,648.294 pace | 4,721,141,070.8661 pace | 5,114,569,493.4383 pace | 5,507,997,916.0105 pace | 5,901,426,338.5827 pace | 6,294,854,761.1549 pace | 6,688,283,183.727 pace | 7,081,711,606.2992 pace | 7,475,140,028.8714 pace | 7,868,568,451.4436 pace | 8,261,996,874.0157 pace | 8,655,425,296.5879 pace | 9,048,853,719.1601 pace | 9,442,282,141.7323 pace | 9,835,710,564.3045 pace | 10,229,138,986.877 pace | 10,622,567,409.449 pace | 11,015,995,832.021 pace | 11,409,424,254.593 pace | 11,802,852,677.165 pace | 12,196,281,099.738 pace | 12,589,709,522.31 pace | 12,983,137,944.882 pace | 13,376,566,367.454 pace | 13,769,994,790.026 pace | 14,163,423,212.598 pace | 14,556,851,635.171 pace | 14,950,280,057.743 pace | 15,343,708,480.315 pace | 15,737,136,902.887 pace | 16,130,565,325.459 pace | 16,523,993,748.031 pace | 16,917,422,170.604 pace | 17,310,850,593.176 pace | 17,704,279,015.748 pace | 18,097,707,438.32 pace | 18,491,135,860.892 pace | 18,884,564,283.465 pace | 19,277,992,706.037 pace | 19,671,421,128.609 pace | 20,064,849,551.181 pace | 20,458,277,973.753 pace | 20,851,706,396.325 pace | 21,245,134,818.898 pace | 21,638,563,241.47 pace | 22,031,991,664.042 pace | 22,425,420,086.614 pace | 22,818,848,509.186 pace | 23,212,276,931.759 pace | 23,605,705,354.331 pace | 23,999,133,776.903 pace | 24,392,562,199.475 pace | 24,785,990,622.047 pace | 25,179,419,044.619 pace | 25,572,847,467.192 pace | 25,966,275,889.764 pace | 26,359,704,312.336 pace | 26,753,132,734.908 pace | 27,146,561,157.48 pace | 27,539,989,580.052 pace | 27,933,418,002.625 pace | 28,326,846,425.197 pace | 28,720,274,847.769 pace | 29,113,703,270.341 pace | 29,507,131,692.913 pace | 29,900,560,115.486 pace | 30,293,988,538.058 pace | 30,687,416,960.63 pace | 31,080,845,383.202 pace | 31,474,273,805.774 pace | 31,867,702,228.346 pace | 32,261,130,650.919 pace | 32,654,559,073.491 pace | 33,047,987,496.063 pace | 33,441,415,918.635 pace | 33,834,844,341.207 pace | 34,228,272,763.78 pace | 34,621,701,186.352 pace | 35,015,129,608.924 pace | 35,408,558,031.496 pace | 35,801,986,454.068 pace | 36,195,414,876.64 pace | 36,588,843,299.213 pace | 36,982,271,721.785 pace | 37,375,700,144.357 pace | 37,769,128,566.929 pace | 38,162,556,989.501 pace | 38,555,985,412.073 pace | 38,949,413,834.646 pace | 39,342,842,257.218 pace |
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 | paces | light-seconds | paces |
|---|---|---|---|
| 1 | = 393428422.57218 | 4 | = 1573713690.2887 |
| 1.5 | = 590142633.85827 | 4.5 | = 1770427901.5748 |
| 2 | = 786856845.14436 | 5 | = 1967142112.8609 |
| 2.5 | = 983571056.43045 | 5.5 | = 2163856324.147 |
| 3 | = 1180285267.7165 | 6 | = 2360570535.4331 |
A pace is a unit of length consisting either of one normal walking step (~0.75 m), or of a double step, returning to the same foot (~1.5 m). Like other traditional measurements, paces started as informal units but have since been standardized, often with the specific length set according to a typical brisk or military marching stride.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| pace | ≡ 2.5 ft | = 0.762 m | Imperial/US |
| paces | light-seconds | paces | light-seconds |
|---|---|---|---|
| 1 | = 2.5417584054099E-9 | 4 | = 1.016703362164E-8 |
| 1.5 | = 3.8126376081149E-9 | 4.5 | = 1.1437912824345E-8 |
| 2 | = 5.0835168108198E-9 | 5 | = 1.270879202705E-8 |
| 2.5 | = 6.3543960135248E-9 | 5.5 | = 1.3979671229755E-8 |
| 3 | = 7.6252752162298E-9 | 6 | = 1.525055043246E-8 |
| light-seconds | paces |
|---|---|
| 1 | = 393,428,422.57218 |
| 2.5417584054099 × 10-9 | = 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 …) |