| foot | 1 ft | 2 ft | 3 ft | 4 ft | 5 ft | 6 ft | 7 ft | 8 ft | 9 ft | 10 ft | 11 ft | 12 ft | 13 ft | 14 ft | 15 ft | 16 ft | 17 ft | 18 ft | 19 ft | 20 ft | 21 ft | 22 ft | 23 ft | 24 ft | 25 ft | 26 ft | 27 ft | 28 ft | 29 ft | 30 ft | 31 ft | 32 ft | 33 ft | 34 ft | 35 ft | 36 ft | 37 ft | 38 ft | 39 ft | 40 ft | 41 ft | 42 ft | 43 ft | 44 ft | 45 ft | 46 ft | 47 ft | 48 ft | 49 ft | 50 ft | 51 ft | 52 ft | 53 ft | 54 ft | 55 ft | 56 ft | 57 ft | 58 ft | 59 ft | 60 ft | 61 ft | 62 ft | 63 ft | 64 ft | 65 ft | 66 ft | 67 ft | 68 ft | 69 ft | 70 ft | 71 ft | 72 ft | 73 ft | 74 ft | 75 ft | 76 ft | 77 ft | 78 ft | 79 ft | 80 ft | 81 ft | 82 ft | 83 ft | 84 ft | 85 ft | 86 ft | 87 ft | 88 ft | 89 ft | 90 ft | 91 ft | 92 ft | 93 ft | 94 ft | 95 ft | 96 ft | 97 ft | 98 ft | 99 ft | 100 ft |
| light-day | 1.1767400025046 × 10-14 ly | 2.3534800050092 × 10-14 ly | 3.5302200075138 × 10-14 ly | 4.7069600100184 × 10-14 ly | 5.883700012523 × 10-14 ly | 7.0604400150276 × 10-14 ly | 8.2371800175321 × 10-14 ly | 9.4139200200367 × 10-14 ly | 1.0590660022541 × 10-13 ly | 1.1767400025046 × 10-13 ly | 1.2944140027551 × 10-13 ly | 1.4120880030055 × 10-13 ly | 1.529762003256 × 10-13 ly | 1.6474360035064 × 10-13 ly | 1.7651100037569 × 10-13 ly | 1.8827840040073 × 10-13 ly | 2.0004580042578 × 10-13 ly | 2.1181320045083 × 10-13 ly | 2.2358060047587 × 10-13 ly | 2.3534800050092 × 10-13 ly | 2.4711540052596 × 10-13 ly | 2.5888280055101 × 10-13 ly | 2.7065020057606 × 10-13 ly | 2.824176006011 × 10-13 ly | 2.9418500062615 × 10-13 ly | 3.0595240065119 × 10-13 ly | 3.1771980067624 × 10-13 ly | 3.2948720070129 × 10-13 ly | 3.4125460072633 × 10-13 ly | 3.5302200075138 × 10-13 ly | 3.6478940077642 × 10-13 ly | 3.7655680080147 × 10-13 ly | 3.8832420082652 × 10-13 ly | 4.0009160085156 × 10-13 ly | 4.1185900087661 × 10-13 ly | 4.2362640090165 × 10-13 ly | 4.353938009267 × 10-13 ly | 4.4716120095174 × 10-13 ly | 4.5892860097679 × 10-13 ly | 4.7069600100184 × 10-13 ly | 4.8246340102688 × 10-13 ly | 4.9423080105193 × 10-13 ly | 5.0599820107697 × 10-13 ly | 5.1776560110202 × 10-13 ly | 5.2953300112707 × 10-13 ly | 5.4130040115211 × 10-13 ly | 5.5306780117716 × 10-13 ly | 5.648352012022 × 10-13 ly | 5.7660260122725 × 10-13 ly | 5.883700012523 × 10-13 ly | 6.0013740127734 × 10-13 ly | 6.1190480130239 × 10-13 ly | 6.2367220132743 × 10-13 ly | 6.3543960135248 × 10-13 ly | 6.4720700137753 × 10-13 ly | 6.5897440140257 × 10-13 ly | 6.7074180142762 × 10-13 ly | 6.8250920145266 × 10-13 ly | 6.9427660147771 × 10-13 ly | 7.0604400150276 × 10-13 ly | 7.178114015278 × 10-13 ly | 7.2957880155285 × 10-13 ly | 7.4134620157789 × 10-13 ly | 7.5311360160294 × 10-13 ly | 7.6488100162798 × 10-13 ly | 7.7664840165303 × 10-13 ly | 7.8841580167808 × 10-13 ly | 8.0018320170312 × 10-13 ly | 8.1195060172817 × 10-13 ly | 8.2371800175321 × 10-13 ly | 8.3548540177826 × 10-13 ly | 8.4725280180331 × 10-13 ly | 8.5902020182835 × 10-13 ly | 8.707876018534 × 10-13 ly | 8.8255500187844 × 10-13 ly | 8.9432240190349 × 10-13 ly | 9.0608980192854 × 10-13 ly | 9.1785720195358 × 10-13 ly | 9.2962460197863 × 10-13 ly | 9.4139200200367 × 10-13 ly | 9.5315940202872 × 10-13 ly | 9.6492680205377 × 10-13 ly | 9.7669420207881 × 10-13 ly | 9.8846160210386 × 10-13 ly | 1.0002290021289 × 10-12 ly | 1.0119964021539 × 10-12 ly | 1.023763802179 × 10-12 ly | 1.035531202204 × 10-12 ly | 1.0472986022291 × 10-12 ly | 1.0590660022541 × 10-12 ly | 1.0708334022792 × 10-12 ly | 1.0826008023042 × 10-12 ly | 1.0943682023293 × 10-12 ly | 1.1061356023543 × 10-12 ly | 1.1179030023794 × 10-12 ly | 1.1296704024044 × 10-12 ly | 1.1414378024295 × 10-12 ly | 1.1532052024545 × 10-12 ly | 1.1649726024795 × 10-12 ly | 1.1767400025046 × 10-12 ly |
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 |
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 |
| 1 feet ≡ 1.1767400025046 × 10-14 light-days |
| 1 light-days ≡ 84 980 539 275 591 feet |