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 |
point (Didot; European) | 53,510.7943465 pt | 107,021.5886930 pt | 160,532.3830395 pt | 214,043.1773860 pt | 267,553.9717325 pt | 321,064.7660789 pt | 374,575.5604254 pt | 428,086.3547719 pt | 481,597.1491184 pt | 535,107.9434649 pt | 588,618.7378114 pt | 642,129.5321579 pt | 695,640.3265044 pt | 749,151.1208509 pt | 802,661.9151973 pt | 856,172.7095438 pt | 909,683.5038903 pt | 963,194.2982368 pt | 1,016,705.0925833 pt | 1,070,215.8869298 pt | 1,123,726.6812763 pt | 1,177,237.4756228 pt | 1,230,748.2699693 pt | 1,284,259.0643157 pt | 1,337,769.8586622 pt | 1,391,280.6530087 pt | 1,444,791.4473552 pt | 1,498,302.2417017 pt | 1,551,813.0360482 pt | 1,605,323.8303947 pt | 1,658,834.6247412 pt | 1,712,345.4190877 pt | 1,765,856.2134341 pt | 1,819,367.0077806 pt | 1,872,877.8021271 pt | 1,926,388.5964736 pt | 1,979,899.3908201 pt | 2,033,410.1851666 pt | 2,086,920.9795131 pt | 2,140,431.7738596 pt | 2,193,942.5682061 pt | 2,247,453.3625525 pt | 2,300,964.156899 pt | 2,354,474.9512455 pt | 2,407,985.745592 pt | 2,461,496.5399385 pt | 2,515,007.334285 pt | 2,568,518.1286315 pt | 2,622,028.922978 pt | 2,675,539.7173245 pt | 2,729,050.5116709 pt | 2,782,561.3060174 pt | 2,836,072.1003639 pt | 2,889,582.8947104 pt | 2,943,093.6890569 pt | 2,996,604.4834034 pt | 3,050,115.2777499 pt | 3,103,626.0720964 pt | 3,157,136.8664429 pt | 3,210,647.6607894 pt | 3,264,158.4551358 pt | 3,317,669.2494823 pt | 3,371,180.0438288 pt | 3,424,690.8381753 pt | 3,478,201.6325218 pt | 3,531,712.4268683 pt | 3,585,223.2212148 pt | 3,638,734.0155613 pt | 3,692,244.8099078 pt | 3,745,755.6042542 pt | 3,799,266.3986007 pt | 3,852,777.1929472 pt | 3,906,287.9872937 pt | 3,959,798.7816402 pt | 4,013,309.5759867 pt | 4,066,820.3703332 pt | 4,120,331.1646797 pt | 4,173,841.9590262 pt | 4,227,352.7533726 pt | 4,280,863.5477191 pt | 4,334,374.3420656 pt | 4,387,885.1364121 pt | 4,441,395.9307586 pt | 4,494,906.7251051 pt | 4,548,417.5194516 pt | 4,601,928.3137981 pt | 4,655,439.1081446 pt | 4,708,949.902491 pt | 4,762,460.6968375 pt | 4,815,971.491184 pt | 4,869,482.2855305 pt | 4,922,993.079877 pt | 4,976,503.8742235 pt | 5,030,014.66857 pt | 5,083,525.4629165 pt | 5,137,036.257263 pt | 5,190,547.0516095 pt | 5,244,057.8459559 pt | 5,297,568.6403024 pt | 5,351,079.4346489 pt |
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 | points (Didot; European) | chains | points (Didot; European) |
---|---|---|---|
1 | ≈ 53510.794346489 | 4 | ≈ 214043.17738596 |
1.5 | ≈ 80266.191519734 | 4.5 | ≈ 240798.5745592 |
2 | ≈ 107021.58869298 | 5 | ≈ 267553.97173245 |
2.5 | ≈ 133776.98586622 | 5.5 | ≈ 294309.36890569 |
3 | ≈ 160532.38303947 | 6 | ≈ 321064.76607894 |
In typography, the point is the smallest unit of measure. It is used for measuring font size, leading, and other items on a printed page.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
point (Didot; European) | pt | ≡ 1⁄12 × 1⁄72 of pied du roi; | ≈ 0.00037597 m; | Other (Length) |
points (Didot; European) | chains | points (Didot; European) | chains |
---|---|---|---|
1 | ≈ 1.8687818265692E-5 | 4 | ≈ 7.4751273062767E-5 |
1.5 | ≈ 2.8031727398538E-5 | 4.5 | ≈ 8.4095182195613E-5 |
2 | ≈ 3.7375636531384E-5 | 5 | ≈ 9.3439091328459E-5 |
2.5 | ≈ 4.671954566423E-5 | 5.5 | ≈ 0.00010278300046131 |
3 | ≈ 5.6063454797075E-5 | 6 | ≈ 0.00011212690959415 |
chains | points (Didot; European) |
---|---|
1 | ≈ 53,510.7943465 |
1.8687818265692 × 10-5 | ≈ 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 …) |