| 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 |
| spat | 0.0002998 S | 0.0005996 S | 0.0008994 S | 0.0011992 S | 0.0014990 S | 0.0017988 S | 0.0020985 S | 0.0023983 S | 0.0026981 S | 0.0029979 S | 0.0032977 S | 0.0035975 S | 0.0038973 S | 0.0041971 S | 0.0044969 S | 0.0047967 S | 0.0050965 S | 0.0053963 S | 0.0056961 S | 0.0059958 S | 0.0062956 S | 0.0065954 S | 0.0068952 S | 0.0071950 S | 0.0074948 S | 0.0077946 S | 0.0080944 S | 0.0083942 S | 0.0086940 S | 0.0089938 S | 0.0092936 S | 0.0095934 S | 0.0098932 S | 0.0101929 S | 0.0104927 S | 0.0107925 S | 0.0110923 S | 0.0113921 S | 0.0116919 S | 0.0119917 S | 0.0122915 S | 0.0125913 S | 0.0128911 S | 0.0131909 S | 0.0134907 S | 0.0137905 S | 0.0140902 S | 0.0143900 S | 0.0146898 S | 0.0149896 S | 0.0152894 S | 0.0155892 S | 0.0158890 S | 0.0161888 S | 0.0164886 S | 0.0167884 S | 0.0170882 S | 0.0173880 S | 0.0176878 S | 0.0179875 S | 0.0182873 S | 0.0185871 S | 0.0188869 S | 0.0191867 S | 0.0194865 S | 0.0197863 S | 0.0200861 S | 0.0203859 S | 0.0206857 S | 0.0209855 S | 0.0212853 S | 0.0215851 S | 0.0218848 S | 0.0221846 S | 0.0224844 S | 0.0227842 S | 0.0230840 S | 0.0233838 S | 0.0236836 S | 0.0239834 S | 0.0242832 S | 0.0245830 S | 0.0248828 S | 0.0251826 S | 0.0254824 S | 0.0257822 S | 0.0260819 S | 0.0263817 S | 0.0266815 S | 0.0269813 S | 0.0272811 S | 0.0275809 S | 0.0278807 S | 0.0281805 S | 0.0284803 S | 0.0287801 S | 0.0290799 S | 0.0293797 S | 0.0296795 S | 0.0299792 S |
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).
| 1 light-seconds ≡ 0.000299792458 spats | 4 light-seconds ≡ 0.001199169832 spats |
| 1.5 light-seconds ≡ 0.000449688687 spats | 4.5 light-seconds ≡ 0.001349066061 spats |
| 2 light-seconds ≡ 0.000599584916 spats | 5 light-seconds ≡ 0.00149896229 spats |
| 2.5 light-seconds ≡ 0.000749481145 spats | 5.5 light-seconds ≡ 0.001648858519 spats |
| 3 light-seconds ≡ 0.000899377374 spats | 6 light-seconds ≡ 0.001798754748 spats |
The spat (symbol S) is also an obsolete unit of distance used in astronomy. It is equal to 1000000000 kilometres (1 Tm or 1012 m). It is about 6.6846 astronomical units (AU), 1.057×10−4 light-years or3.240×10−5 parsecs.
| 1 spats ≡ 3335.6409519815 light-seconds | 4 spats ≡ 13342.563807926 light-seconds |
| 1.5 spats ≡ 5003.4614279723 light-seconds | 4.5 spats ≡ 15010.384283917 light-seconds |
| 2 spats ≡ 6671.281903963 light-seconds | 5 spats ≡ 16678.204759908 light-seconds |
| 2.5 spats ≡ 8339.1023799538 light-seconds | 5.5 spats ≡ 18346.025235898 light-seconds |
| 3 spats ≡ 10006.922855945 light-seconds | 6 spats ≡ 20013.845711889 light-seconds |
| 1 light-seconds ≡ 0.0002998 spats |
| 1 spats ≡ 3,335.6409520 light-seconds |