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 |
nautical mile | 0.0108622 NM; nmi | 0.0217244 NM; nmi | 0.0325867 NM; nmi | 0.0434489 NM; nmi | 0.0543111 NM; nmi | 0.0651733 NM; nmi | 0.0760356 NM; nmi | 0.0868978 NM; nmi | 0.0977600 NM; nmi | 0.1086222 NM; nmi | 0.1194845 NM; nmi | 0.1303467 NM; nmi | 0.1412089 NM; nmi | 0.1520711 NM; nmi | 0.1629334 NM; nmi | 0.1737956 NM; nmi | 0.1846578 NM; nmi | 0.1955200 NM; nmi | 0.2063823 NM; nmi | 0.2172445 NM; nmi | 0.2281067 NM; nmi | 0.2389689 NM; nmi | 0.2498312 NM; nmi | 0.2606934 NM; nmi | 0.2715556 NM; nmi | 0.2824178 NM; nmi | 0.2932801 NM; nmi | 0.3041423 NM; nmi | 0.3150045 NM; nmi | 0.3258667 NM; nmi | 0.3367290 NM; nmi | 0.3475912 NM; nmi | 0.3584534 NM; nmi | 0.3693156 NM; nmi | 0.3801779 NM; nmi | 0.3910401 NM; nmi | 0.4019023 NM; nmi | 0.4127645 NM; nmi | 0.4236268 NM; nmi | 0.4344890 NM; nmi | 0.4453512 NM; nmi | 0.4562134 NM; nmi | 0.4670757 NM; nmi | 0.4779379 NM; nmi | 0.4888001 NM; nmi | 0.4996623 NM; nmi | 0.5105246 NM; nmi | 0.5213868 NM; nmi | 0.5322490 NM; nmi | 0.5431112 NM; nmi | 0.5539735 NM; nmi | 0.5648357 NM; nmi | 0.5756979 NM; nmi | 0.5865601 NM; nmi | 0.5974224 NM; nmi | 0.6082846 NM; nmi | 0.6191468 NM; nmi | 0.6300090 NM; nmi | 0.6408713 NM; nmi | 0.6517335 NM; nmi | 0.6625957 NM; nmi | 0.6734579 NM; nmi | 0.6843202 NM; nmi | 0.6951824 NM; nmi | 0.7060446 NM; nmi | 0.7169068 NM; nmi | 0.7277690 NM; nmi | 0.7386313 NM; nmi | 0.7494935 NM; nmi | 0.7603557 NM; nmi | 0.7712179 NM; nmi | 0.7820802 NM; nmi | 0.7929424 NM; nmi | 0.8038046 NM; nmi | 0.8146668 NM; nmi | 0.8255291 NM; nmi | 0.8363913 NM; nmi | 0.8472535 NM; nmi | 0.8581157 NM; nmi | 0.8689780 NM; nmi | 0.8798402 NM; nmi | 0.8907024 NM; nmi | 0.9015646 NM; nmi | 0.9124269 NM; nmi | 0.9232891 NM; nmi | 0.9341513 NM; nmi | 0.9450135 NM; nmi | 0.9558758 NM; nmi | 0.9667380 NM; nmi | 0.9776002 NM; nmi | 0.9884624 NM; nmi | 0.9993247 NM; nmi | 1.0101869 NM; nmi | 1.0210491 NM; nmi | 1.0319113 NM; nmi | 1.0427736 NM; nmi | 1.0536358 NM; nmi | 1.0644980 NM; nmi | 1.0753602 NM; nmi | 1.0862225 NM; nmi |
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 | nautical miles | chains | nautical miles |
---|---|---|---|
1 | ≈ 0.01086222462203 | 4 | ≈ 0.043448898488121 |
1.5 | ≈ 0.016293336933045 | 4.5 | ≈ 0.048880010799136 |
2 | ≈ 0.02172444924406 | 5 | ≈ 0.054311123110151 |
2.5 | ≈ 0.027155561555076 | 5.5 | ≈ 0.059742235421166 |
3 | ≈ 0.032586673866091 | 6 | ≈ 0.065173347732181 |
A nautical mile is a unit of measurement defined as exactly 1852 meters (about 6,076.1 feet or 1.1508 statute miles). Historically, it was defined as one minute of latitude, which is equivalent to one sixtieth of a degree of latitude.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
nautical mile | NM; nmi | ≡ 1852 m | ≡ 1852 m | Imperial/US |
nautical miles | chains | nautical miles | chains |
---|---|---|---|
1 | ≈ 92.062172786581 | 4 | ≈ 368.24869114632 |
1.5 | ≈ 138.09325917987 | 4.5 | ≈ 414.27977753961 |
2 | ≈ 184.12434557316 | 5 | ≈ 460.3108639329 |
2.5 | ≈ 230.15543196645 | 5.5 | ≈ 506.34195032619 |
3 | ≈ 276.18651835974 | 6 | ≈ 552.37303671948 |
chains | nautical miles |
---|---|
1 | ≈ 0.0108622 |
92.0621728 | ≈ 1 |
You can find the conversion in other languages in the following:
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 …) |