| light-day | 1 ly | 2 ly | 3 ly | 4 ly | 5 ly | 6 ly | 7 ly | 8 ly | 9 ly | 10 ly | 11 ly | 12 ly | 13 ly | 14 ly | 15 ly | 16 ly | 17 ly | 18 ly | 19 ly | 20 ly | 21 ly | 22 ly | 23 ly | 24 ly | 25 ly | 26 ly | 27 ly | 28 ly | 29 ly | 30 ly | 31 ly | 32 ly | 33 ly | 34 ly | 35 ly | 36 ly | 37 ly | 38 ly | 39 ly | 40 ly | 41 ly | 42 ly | 43 ly | 44 ly | 45 ly | 46 ly | 47 ly | 48 ly | 49 ly | 50 ly | 51 ly | 52 ly | 53 ly | 54 ly | 55 ly | 56 ly | 57 ly | 58 ly | 59 ly | 60 ly | 61 ly | 62 ly | 63 ly | 64 ly | 65 ly | 66 ly | 67 ly | 68 ly | 69 ly | 70 ly | 71 ly | 72 ly | 73 ly | 74 ly | 75 ly | 76 ly | 77 ly | 78 ly | 79 ly | 80 ly | 81 ly | 82 ly | 83 ly | 84 ly | 85 ly | 86 ly | 87 ly | 88 ly | 89 ly | 90 ly | 91 ly | 92 ly | 93 ly | 94 ly | 95 ly | 96 ly | 97 ly | 98 ly | 99 ly | 100 ly |
| foot | 84 980 539 275 591 ft | 1.6996107855118 × 1014 ft | 2.5494161782677 × 1014 ft | 3.3992215710236 × 1014 ft | 4.2490269637795 × 1014 ft | 5.0988323565354 × 1014 ft | 5.9486377492913 × 1014 ft | 6.7984431420472 × 1014 ft | 7.6482485348031 × 1014 ft | 8.4980539275591 × 1014 ft | 9.347859320315 × 1014 ft | 1.0197664713071 × 1015 ft | 1.1047470105827 × 1015 ft | 1.1897275498583 × 1015 ft | 1.2747080891339 × 1015 ft | 1.3596886284094 × 1015 ft | 1.444669167685 × 1015 ft | 1.5296497069606 × 1015 ft | 1.6146302462362 × 1015 ft | 1.6996107855118 × 1015 ft | 1.7845913247874 × 1015 ft | 1.869571864063 × 1015 ft | 1.9545524033386 × 1015 ft | 2.0395329426142 × 1015 ft | 2.1245134818898 × 1015 ft | 2.2094940211654 × 1015 ft | 2.2944745604409 × 1015 ft | 2.3794550997165 × 1015 ft | 2.4644356389921 × 1015 ft | 2.5494161782677 × 1015 ft | 2.6343967175433 × 1015 ft | 2.7193772568189 × 1015 ft | 2.8043577960945 × 1015 ft | 2.8893383353701 × 1015 ft | 2.9743188746457 × 1015 ft | 3.0592994139213 × 1015 ft | 3.1442799531968 × 1015 ft | 3.2292604924724 × 1015 ft | 3.314241031748 × 1015 ft | 3.3992215710236 × 1015 ft | 3.4842021102992 × 1015 ft | 3.5691826495748 × 1015 ft | 3.6541631888504 × 1015 ft | 3.739143728126 × 1015 ft | 3.8241242674016 × 1015 ft | 3.9091048066772 × 1015 ft | 3.9940853459528 × 1015 ft | 4.0790658852283 × 1015 ft | 4.1640464245039 × 1015 ft | 4.2490269637795 × 1015 ft | 4.3340075030551 × 1015 ft | 4.4189880423307 × 1015 ft | 4.5039685816063 × 1015 ft | 4.5889491208819 × 1015 ft | 4.6739296601575 × 1015 ft | 4.7589101994331 × 1015 ft | 4.8438907387087 × 1015 ft | 4.9288712779843 × 1015 ft | 5.0138518172598 × 1015 ft | 5.0988323565354 × 1015 ft | 5.183812895811 × 1015 ft | 5.2687934350866 × 1015 ft | 5.3537739743622 × 1015 ft | 5.4387545136378 × 1015 ft | 5.5237350529134 × 1015 ft | 5.608715592189 × 1015 ft | 5.6936961314646 × 1015 ft | 5.7786766707402 × 1015 ft | 5.8636572100157 × 1015 ft | 5.9486377492913 × 1015 ft | 6.0336182885669 × 1015 ft | 6.1185988278425 × 1015 ft | 6.2035793671181 × 1015 ft | 6.2885599063937 × 1015 ft | 6.3735404456693 × 1015 ft | 6.4585209849449 × 1015 ft | 6.5435015242205 × 1015 ft | 6.6284820634961 × 1015 ft | 6.7134626027717 × 1015 ft | 6.7984431420472 × 1015 ft | 6.8834236813228 × 1015 ft | 6.9684042205984 × 1015 ft | 7.053384759874 × 1015 ft | 7.1383652991496 × 1015 ft | 7.2233458384252 × 1015 ft | 7.3083263777008 × 1015 ft | 7.3933069169764 × 1015 ft | 7.478287456252 × 1015 ft | 7.5632679955276 × 1015 ft | 7.6482485348031 × 1015 ft | 7.7332290740787 × 1015 ft | 7.8182096133543 × 1015 ft | 7.9031901526299 × 1015 ft | 7.9881706919055 × 1015 ft | 8.0731512311811 × 1015 ft | 8.1581317704567 × 1015 ft | 8.2431123097323 × 1015 ft | 8.3280928490079 × 1015 ft | 8.4130733882835 × 1015 ft | 8.4980539275591 × 1015 ft |
The light-day 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 oneday, and is equal to exactly 2.59020683712×1013 metres.
| 1 light-days ≡ 84980539275591 feet | 4 light-days ≡ 3.3992215710236E+14 feet |
| 1.5 light-days ≡ 1.2747080891339E+14 feet | 4.5 light-days ≡ 3.8241242674016E+14 feet |
| 2 light-days ≡ 1.6996107855118E+14 feet | 5 light-days ≡ 4.2490269637795E+14 feet |
| 2.5 light-days ≡ 2.1245134818898E+14 feet | 5.5 light-days ≡ 4.6739296601575E+14 feet |
| 3 light-days ≡ 2.5494161782677E+14 feet | 6 light-days ≡ 5.0988323565354E+14 feet |
The foot (pl. feet; abbreviation: ft; symbol: ′, the prime symbol) is a unit of length in the imperial and US customary systems of measurement. Since 1959, both units have been defined by international agreement as equivalent to 0.3048 meters exactly. In both systems, the foot comprises 12 inches and three feet compose a yard.
| 1 feet ≡ 1.1767400025046E-14 light-days | 4 feet ≡ 4.7069600100184E-14 light-days |
| 1.5 feet ≡ 1.7651100037569E-14 light-days | 4.5 feet ≡ 5.2953300112707E-14 light-days |
| 2 feet ≡ 2.3534800050092E-14 light-days | 5 feet ≡ 5.883700012523E-14 light-days |
| 2.5 feet ≡ 2.9418500062615E-14 light-days | 5.5 feet ≡ 6.4720700137753E-14 light-days |
| 3 feet ≡ 3.5302200075138E-14 light-days | 6 feet ≡ 7.0604400150276E-14 light-days |
| 1 light-days ≡ 84 980 539 275 591 feet |
| 1 feet ≡ 1.1767400025046 × 10-14 light-days |