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 |
metric mile | 0.0125000 metric mile | 0.0250000 metric mile | 0.0375001 metric mile | 0.0500001 metric mile | 0.0625001 metric mile | 0.0750001 metric mile | 0.0875002 metric mile | 0.1000002 metric mile | 0.1125002 metric mile | 0.1250002 metric mile | 0.1375003 metric mile | 0.1500003 metric mile | 0.1625003 metric mile | 0.1750003 metric mile | 0.1875004 metric mile | 0.2000004 metric mile | 0.2125004 metric mile | 0.2250004 metric mile | 0.2375005 metric mile | 0.2500005 metric mile | 0.2625005 metric mile | 0.2750005 metric mile | 0.2875006 metric mile | 0.3000006 metric mile | 0.3125006 metric mile | 0.3250006 metric mile | 0.3375007 metric mile | 0.3500007 metric mile | 0.3625007 metric mile | 0.3750007 metric mile | 0.3875008 metric mile | 0.4000008 metric mile | 0.4125008 metric mile | 0.4250008 metric mile | 0.4375009 metric mile | 0.4500009 metric mile | 0.4625009 metric mile | 0.4750009 metric mile | 0.4875010 metric mile | 0.5000010 metric mile | 0.5125010 metric mile | 0.5250010 metric mile | 0.5375011 metric mile | 0.5500011 metric mile | 0.5625011 metric mile | 0.5750011 metric mile | 0.5875012 metric mile | 0.6000012 metric mile | 0.6125012 metric mile | 0.6250012 metric mile | 0.6375013 metric mile | 0.6500013 metric mile | 0.6625013 metric mile | 0.6750013 metric mile | 0.6875014 metric mile | 0.7000014 metric mile | 0.7125014 metric mile | 0.7250014 metric mile | 0.7375015 metric mile | 0.7500015 metric mile | 0.7625015 metric mile | 0.7750015 metric mile | 0.7875016 metric mile | 0.8000016 metric mile | 0.8125016 metric mile | 0.8250016 metric mile | 0.8375017 metric mile | 0.8500017 metric mile | 0.8625017 metric mile | 0.8750017 metric mile | 0.8875018 metric mile | 0.9000018 metric mile | 0.9125018 metric mile | 0.9250018 metric mile | 0.9375019 metric mile | 0.9500019 metric mile | 0.9625019 metric mile | 0.9750019 metric mile | 0.9875020 metric mile | 1.0000020 metric mile | 1.0125020 metric mile | 1.0250020 metric mile | 1.0375021 metric mile | 1.0500021 metric mile | 1.0625021 metric mile | 1.0750021 metric mile | 1.0875022 metric mile | 1.1000022 metric mile | 1.1125022 metric mile | 1.1250022 metric mile | 1.1375023 metric mile | 1.1500023 metric mile | 1.1625023 metric mile | 1.1750023 metric mile | 1.1875024 metric mile | 1.2000024 metric mile | 1.2125024 metric mile | 1.2250024 metric mile | 1.2375025 metric mile | 1.2500025 metric mile |
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.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
chain | ch | ≡ 66 ft (US) ≡ 4 rods | ≈ 20.11684 m | Imperial/US |
chains | metric miles | chains | metric miles |
---|---|---|---|
1 | ≈ 0.012500024854848 | 4 | ≈ 0.050000099419391 |
1.5 | ≈ 0.018750037282272 | 4.5 | ≈ 0.056250111846815 |
2 | ≈ 0.025000049709695 | 5 | ≈ 0.062500124274238 |
2.5 | ≈ 0.031250062137119 | 5.5 | ≈ 0.068750136701662 |
3 | ≈ 0.037500074564543 | 6 | ≈ 0.075000149129086 |
A metric mile is a distance which approximates one statute mile (1609.344 m) at a round figure of metres (the SI or metric unit of length). The term is most commonly used in track running and swimming.
In track running, the 1500 m race became the standard middle distance race in Europe in the late 19th century, and has been the standard distance in the Olympic Games since 1896. The distance of the race is sometimes referred to as a metric mile.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
metric mile | ≈ 1609.344 m | Metric system Non-SI |
metric miles | chains | metric miles | chains |
---|---|---|---|
1 | ≈ 79.999840929291 | 4 | ≈ 319.99936371716 |
1.5 | ≈ 119.99976139394 | 4.5 | ≈ 359.99928418181 |
2 | ≈ 159.99968185858 | 5 | ≈ 399.99920464646 |
2.5 | ≈ 199.99960232323 | 5.5 | ≈ 439.9991251111 |
3 | ≈ 239.99952278787 | 6 | ≈ 479.99904557575 |
chains | metric miles |
---|---|
1 | ≈ 0.0125000 |
79.9998409 | ≈ 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 …) |