| chain | 1 ch | 2 ch | 3 ch | 4 ch | 5 ch | 6 ch | 7 ch | 8 ch | 9 ch | 10 ch | 11 ch | 12 ch | 13 ch | 14 ch | 15 ch | 16 ch | 17 ch | 18 ch | 19 ch | 20 ch | 21 ch | 22 ch | 23 ch | 24 ch | 25 ch | 26 ch | 27 ch | 28 ch | 29 ch | 30 ch | 31 ch | 32 ch | 33 ch | 34 ch | 35 ch | 36 ch | 37 ch | 38 ch | 39 ch | 40 ch | 41 ch | 42 ch | 43 ch | 44 ch | 45 ch | 46 ch | 47 ch | 48 ch | 49 ch | 50 ch | 51 ch | 52 ch | 53 ch | 54 ch | 55 ch | 56 ch | 57 ch | 58 ch | 59 ch | 60 ch | 61 ch | 62 ch | 63 ch | 64 ch | 65 ch | 66 ch | 67 ch | 68 ch | 69 ch | 70 ch | 71 ch | 72 ch | 73 ch | 74 ch | 75 ch | 76 ch | 77 ch | 78 ch | 79 ch | 80 ch | 81 ch | 82 ch | 83 ch | 84 ch | 85 ch | 86 ch | 87 ch | 88 ch | 89 ch | 90 ch | 91 ch | 92 ch | 93 ch | 94 ch | 95 ch | 96 ch | 97 ch | 98 ch | 99 ch | 100 ch |
| light-day | 7.7664994593125 × 10-13 ly | 1.5532998918625 × 10-12 ly | 2.3299498377937 × 10-12 ly | 3.106599783725 × 10-12 ly | 3.8832497296562 × 10-12 ly | 4.6598996755875 × 10-12 ly | 5.4365496215187 × 10-12 ly | 6.21319956745 × 10-12 ly | 6.9898495133812 × 10-12 ly | 7.7664994593125 × 10-12 ly | 8.5431494052437 × 10-12 ly | 9.319799351175 × 10-12 ly | 1.0096449297106 × 10-11 ly | 1.0873099243037 × 10-11 ly | 1.1649749188969 × 10-11 ly | 1.24263991349 × 10-11 ly | 1.3203049080831 × 10-11 ly | 1.3979699026762 × 10-11 ly | 1.4756348972694 × 10-11 ly | 1.5532998918625 × 10-11 ly | 1.6309648864556 × 10-11 ly | 1.7086298810487 × 10-11 ly | 1.7862948756419 × 10-11 ly | 1.863959870235 × 10-11 ly | 1.9416248648281 × 10-11 ly | 2.0192898594212 × 10-11 ly | 2.0969548540144 × 10-11 ly | 2.1746198486075 × 10-11 ly | 2.2522848432006 × 10-11 ly | 2.3299498377937 × 10-11 ly | 2.4076148323869 × 10-11 ly | 2.48527982698 × 10-11 ly | 2.5629448215731 × 10-11 ly | 2.6406098161662 × 10-11 ly | 2.7182748107594 × 10-11 ly | 2.7959398053525 × 10-11 ly | 2.8736047999456 × 10-11 ly | 2.9512697945387 × 10-11 ly | 3.0289347891319 × 10-11 ly | 3.106599783725 × 10-11 ly | 3.1842647783181 × 10-11 ly | 3.2619297729112 × 10-11 ly | 3.3395947675044 × 10-11 ly | 3.4172597620975 × 10-11 ly | 3.4949247566906 × 10-11 ly | 3.5725897512837 × 10-11 ly | 3.6502547458769 × 10-11 ly | 3.72791974047 × 10-11 ly | 3.8055847350631 × 10-11 ly | 3.8832497296562 × 10-11 ly | 3.9609147242494 × 10-11 ly | 4.0385797188425 × 10-11 ly | 4.1162447134356 × 10-11 ly | 4.1939097080287 × 10-11 ly | 4.2715747026219 × 10-11 ly | 4.349239697215 × 10-11 ly | 4.4269046918081 × 10-11 ly | 4.5045696864012 × 10-11 ly | 4.5822346809944 × 10-11 ly | 4.6598996755875 × 10-11 ly | 4.7375646701806 × 10-11 ly | 4.8152296647737 × 10-11 ly | 4.8928946593669 × 10-11 ly | 4.97055965396 × 10-11 ly | 5.0482246485531 × 10-11 ly | 5.1258896431462 × 10-11 ly | 5.2035546377394 × 10-11 ly | 5.2812196323325 × 10-11 ly | 5.3588846269256 × 10-11 ly | 5.4365496215187 × 10-11 ly | 5.5142146161119 × 10-11 ly | 5.591879610705 × 10-11 ly | 5.6695446052981 × 10-11 ly | 5.7472095998912 × 10-11 ly | 5.8248745944844 × 10-11 ly | 5.9025395890775 × 10-11 ly | 5.9802045836706 × 10-11 ly | 6.0578695782637 × 10-11 ly | 6.1355345728569 × 10-11 ly | 6.21319956745 × 10-11 ly | 6.2908645620431 × 10-11 ly | 6.3685295566362 × 10-11 ly | 6.4461945512294 × 10-11 ly | 6.5238595458225 × 10-11 ly | 6.6015245404156 × 10-11 ly | 6.6791895350087 × 10-11 ly | 6.7568545296019 × 10-11 ly | 6.834519524195 × 10-11 ly | 6.9121845187881 × 10-11 ly | 6.9898495133812 × 10-11 ly | 7.0675145079744 × 10-11 ly | 7.1451795025675 × 10-11 ly | 7.2228444971606 × 10-11 ly | 7.3005094917537 × 10-11 ly | 7.3781744863469 × 10-11 ly | 7.45583948094 × 10-11 ly | 7.5335044755331 × 10-11 ly | 7.6111694701262 × 10-11 ly | 7.6888344647194 × 10-11 ly | 7.7664994593125 × 10-11 ly |
A chain is a unit of length. It measures 66 feet, or 22 yards, or 100 links, or 4 rods (20.1168 m). There are 10 chains in a furlong, and 80 chains in one statute mile. An acre is the area of 10 square chains (that is, an area of one chain by one furlong). The chain has been used for several centuries in Britain and in some other countries influenced by British practice.
| 1 chains ≈ 7.7664994593125E-13 light-days | 4 chains ≈ 3.106599783725E-12 light-days |
| 1.5 chains ≈ 1.1649749188969E-12 light-days | 4.5 chains ≈ 3.4949247566906E-12 light-days |
| 2 chains ≈ 1.5532998918625E-12 light-days | 5 chains ≈ 3.8832497296562E-12 light-days |
| 2.5 chains ≈ 1.9416248648281E-12 light-days | 5.5 chains ≈ 4.2715747026219E-12 light-days |
| 3 chains ≈ 2.3299498377937E-12 light-days | 6 chains ≈ 4.6598996755875E-12 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 ≈ 1287581368206.9 chains | 4 light-days ≈ 5150325472827.7 chains |
| 1.5 light-days ≈ 1931372052310.4 chains | 4.5 light-days ≈ 5794116156931.2 chains |
| 2 light-days ≈ 2575162736413.9 chains | 5 light-days ≈ 6437906841034.7 chains |
| 2.5 light-days ≈ 3218953420517.3 chains | 5.5 light-days ≈ 7081697525138.1 chains |
| 3 light-days ≈ 3862744104620.8 chains | 6 light-days ≈ 7725488209241.6 chains |
| 1 chains ≈ 7.7664994593125 × 10-13 light-days |
| 1 light-days ≈ 1,287,581,368,206.9 chains |