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 |
foot, metric (short) | 999,308,193.33333 smf | 1,998,616,386.6667 smf | 2 997 924 580 smf | 3,997,232,773.3333 smf | 4,996,540,966.6667 smf | 5 995 849 160 smf | 6,995,157,353.3333 smf | 7,994,465,546.6667 smf | 8 993 773 740 smf | 9,993,081,933.3333 smf | 10,992,390,126.667 smf | 11 991 698 320 smf | 12,991,006,513.333 smf | 13,990,314,706.667 smf | 14 989 622 900 smf | 15,988,931,093.333 smf | 16,988,239,286.667 smf | 17 987 547 480 smf | 18,986,855,673.333 smf | 19,986,163,866.667 smf | 20 985 472 060 smf | 21,984,780,253.333 smf | 22,984,088,446.667 smf | 23 983 396 640 smf | 24,982,704,833.333 smf | 25,982,013,026.667 smf | 26 981 321 220 smf | 27,980,629,413.333 smf | 28,979,937,606.667 smf | 29 979 245 800 smf | 30,978,553,993.333 smf | 31,977,862,186.667 smf | 32 977 170 380 smf | 33,976,478,573.333 smf | 34,975,786,766.667 smf | 35 975 094 960 smf | 36,974,403,153.333 smf | 37,973,711,346.667 smf | 38 973 019 540 smf | 39,972,327,733.333 smf | 40,971,635,926.667 smf | 41 970 944 120 smf | 42,970,252,313.333 smf | 43,969,560,506.667 smf | 44 968 868 700 smf | 45,968,176,893.333 smf | 46,967,485,086.667 smf | 47 966 793 280 smf | 48,966,101,473.333 smf | 49,965,409,666.667 smf | 50 964 717 860 smf | 51,964,026,053.333 smf | 52,963,334,246.667 smf | 53 962 642 440 smf | 54,961,950,633.333 smf | 55,961,258,826.667 smf | 56 960 567 020 smf | 57,959,875,213.333 smf | 58,959,183,406.667 smf | 59 958 491 600 smf | 60,957,799,793.333 smf | 61,957,107,986.667 smf | 62 956 416 180 smf | 63,955,724,373.333 smf | 64,955,032,566.667 smf | 65 954 340 760 smf | 66,953,648,953.333 smf | 67,952,957,146.667 smf | 68 952 265 340 smf | 69,951,573,533.333 smf | 70,950,881,726.667 smf | 71 950 189 920 smf | 72,949,498,113.333 smf | 73,948,806,306.667 smf | 74 948 114 500 smf | 75,947,422,693.333 smf | 76,946,730,886.667 smf | 77 946 039 080 smf | 78,945,347,273.333 smf | 79,944,655,466.667 smf | 80 943 963 660 smf | 81,943,271,853.333 smf | 82,942,580,046.667 smf | 83 941 888 240 smf | 84,941,196,433.333 smf | 85,940,504,626.667 smf | 86 939 812 820 smf | 87,939,121,013.333 smf | 88,938,429,206.667 smf | 89 937 737 400 smf | 90,937,045,593.333 smf | 91,936,353,786.667 smf | 92 935 661 980 smf | 93,934,970,173.333 smf | 94,934,278,366.667 smf | 95 933 586 560 smf | 96,932,894,753.333 smf | 97,932,202,946.667 smf | 98 931 511 140 smf | 99,930,819,333.333 smf |
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 | feet, metric (short) | light-seconds | feet, metric (short) |
---|---|---|---|
1 | ≡ 999308193.33333 | 4 | ≡ 3997232773.3333 |
1.5 | ≡ 1498962290 | 4.5 | ≡ 4496886870 |
2 | ≡ 1998616386.6667 | 5 | ≡ 4996540966.6667 |
2.5 | ≡ 2498270483.3333 | 5.5 | ≡ 5496195063.3333 |
3 | ≡ 2997924580 | 6 | ≡ 5995849160 |
≡ 0.30 m
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot, metric (short) | smf | ≡ 0.30 m | ≡ 0.30 m | Metric system SI |
feet, metric (short) | light-seconds | feet, metric (short) | light-seconds |
---|---|---|---|
1 | ≡ 1.0006922855945E-9 | 4 | ≡ 4.0027691423778E-9 |
1.5 | ≡ 1.5010384283917E-9 | 4.5 | ≡ 4.5031152851751E-9 |
2 | ≡ 2.0013845711889E-9 | 5 | ≡ 5.0034614279723E-9 |
2.5 | ≡ 2.5017307139861E-9 | 5.5 | ≡ 5.5038075707695E-9 |
3 | ≡ 3.0020768567834E-9 | 6 | ≡ 6.0041537135667E-9 |
light-seconds | feet, metric (short) |
---|---|
1 | ≡ 999,308,193.33333 |
1.0006922855945 × 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 …) |