| rod | 1 rd | 2 rd | 3 rd | 4 rd | 5 rd | 6 rd | 7 rd | 8 rd | 9 rd | 10 rd | 11 rd | 12 rd | 13 rd | 14 rd | 15 rd | 16 rd | 17 rd | 18 rd | 19 rd | 20 rd | 21 rd | 22 rd | 23 rd | 24 rd | 25 rd | 26 rd | 27 rd | 28 rd | 29 rd | 30 rd | 31 rd | 32 rd | 33 rd | 34 rd | 35 rd | 36 rd | 37 rd | 38 rd | 39 rd | 40 rd | 41 rd | 42 rd | 43 rd | 44 rd | 45 rd | 46 rd | 47 rd | 48 rd | 49 rd | 50 rd | 51 rd | 52 rd | 53 rd | 54 rd | 55 rd | 56 rd | 57 rd | 58 rd | 59 rd | 60 rd | 61 rd | 62 rd | 63 rd | 64 rd | 65 rd | 66 rd | 67 rd | 68 rd | 69 rd | 70 rd | 71 rd | 72 rd | 73 rd | 74 rd | 75 rd | 76 rd | 77 rd | 78 rd | 79 rd | 80 rd | 81 rd | 82 rd | 83 rd | 84 rd | 85 rd | 86 rd | 87 rd | 88 rd | 89 rd | 90 rd | 91 rd | 92 rd | 93 rd | 94 rd | 95 rd | 96 rd | 97 rd | 98 rd | 99 rd | 100 rd |
| chain | 0.2499995 ch | 0.4999990 ch | 0.7499985 ch | 0.9999980 ch | 1.2499975 ch | 1.4999970 ch | 1.7499965 ch | 1.9999960 ch | 2.2499955 ch | 2.4999950 ch | 2.7499945 ch | 2.9999940 ch | 3.2499935 ch | 3.4999930 ch | 3.7499925 ch | 3.9999920 ch | 4.2499915 ch | 4.4999911 ch | 4.7499906 ch | 4.9999901 ch | 5.2499896 ch | 5.4999891 ch | 5.7499886 ch | 5.9999881 ch | 6.2499876 ch | 6.4999871 ch | 6.7499866 ch | 6.9999861 ch | 7.2499856 ch | 7.4999851 ch | 7.7499846 ch | 7.9999841 ch | 8.2499836 ch | 8.4999831 ch | 8.7499826 ch | 8.9999821 ch | 9.2499816 ch | 9.4999811 ch | 9.7499806 ch | 9.9999801 ch | 10.2499796 ch | 10.4999791 ch | 10.7499786 ch | 10.9999781 ch | 11.2499776 ch | 11.4999771 ch | 11.7499766 ch | 11.9999761 ch | 12.2499756 ch | 12.4999751 ch | 12.7499746 ch | 12.9999742 ch | 13.2499737 ch | 13.4999732 ch | 13.7499727 ch | 13.9999722 ch | 14.2499717 ch | 14.4999712 ch | 14.7499707 ch | 14.9999702 ch | 15.2499697 ch | 15.4999692 ch | 15.7499687 ch | 15.9999682 ch | 16.2499677 ch | 16.4999672 ch | 16.7499667 ch | 16.9999662 ch | 17.2499657 ch | 17.4999652 ch | 17.7499647 ch | 17.9999642 ch | 18.2499637 ch | 18.4999632 ch | 18.7499627 ch | 18.9999622 ch | 19.2499617 ch | 19.4999612 ch | 19.7499607 ch | 19.9999602 ch | 20.2499597 ch | 20.4999592 ch | 20.7499587 ch | 20.9999582 ch | 21.2499577 ch | 21.4999572 ch | 21.7499568 ch | 21.9999563 ch | 22.2499558 ch | 22.4999553 ch | 22.7499548 ch | 22.9999543 ch | 23.2499538 ch | 23.4999533 ch | 23.7499528 ch | 23.9999523 ch | 24.2499518 ch | 24.4999513 ch | 24.7499508 ch | 24.9999503 ch |
The rod or perch or pole is a surveyors tool and unit of length equal to 5 1⁄2 yards, 16 1⁄2 feet, 1⁄320 of a statute mile or one-fourth of a surveyor's chain and 5.0292 meters.
| 1 rods ≈ 0.24999950290403 chains | 4 rods ≈ 0.99999801161614 chains |
| 1.5 rods ≈ 0.37499925435605 chains | 4.5 rods ≈ 1.1249977630682 chains |
| 2 rods ≈ 0.49999900580807 chains | 5 rods ≈ 1.2499975145202 chains |
| 2.5 rods ≈ 0.62499875726009 chains | 5.5 rods ≈ 1.3749972659722 chains |
| 3 rods ≈ 0.7499985087121 chains | 6 rods ≈ 1.4999970174242 chains |
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 ≈ 4.0000079535513 rods | 4 chains ≈ 16.000031814205 rods |
| 1.5 chains ≈ 6.0000119303269 rods | 4.5 chains ≈ 18.000035790981 rods |
| 2 chains ≈ 8.0000159071025 rods | 5 chains ≈ 20.000039767756 rods |
| 2.5 chains ≈ 10.000019883878 rods | 5.5 chains ≈ 22.000043744532 rods |
| 3 chains ≈ 12.000023860654 rods | 6 chains ≈ 24.000047721308 rods |
| 1 rods ≈ 0.2499995 chains |
| 1 chains ≈ 4.0000080 rods |