| 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 |
| span | 22 span | 44 span | 66 span | 88 span | 110 span | 132 span | 154 span | 176 span | 198 span | 220 span | 242 span | 264 span | 286 span | 308 span | 330 span | 352 span | 374 span | 396 span | 418 span | 440 span | 462 span | 484 span | 506 span | 528 span | 550 span | 572 span | 594 span | 616 span | 638 span | 660 span | 682 span | 704 span | 726 span | 748 span | 770 span | 792 span | 814 span | 836 span | 858 span | 880 span | 902 span | 924 span | 946 span | 968 span | 990 span | 1 012 span | 1 034 span | 1 056 span | 1 078 span | 1 100 span | 1 122 span | 1 144 span | 1 166 span | 1 188 span | 1 210 span | 1 232 span | 1 254 span | 1 276 span | 1 298 span | 1 320 span | 1 342 span | 1 364 span | 1 386 span | 1 408 span | 1 430 span | 1 452 span | 1 474 span | 1 496 span | 1 518 span | 1 540 span | 1 562 span | 1 584 span | 1 606 span | 1 628 span | 1 650 span | 1 672 span | 1 694 span | 1 716 span | 1 738 span | 1 760 span | 1 782 span | 1 804 span | 1 826 span | 1 848 span | 1 870 span | 1 892 span | 1 914 span | 1 936 span | 1 958 span | 1 980 span | 2 002 span | 2 024 span | 2 046 span | 2 068 span | 2 090 span | 2 112 span | 2 134 span | 2 156 span | 2 178 span | 2 200 span |
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 = 22 spans | 4 rods = 88 spans |
| 1.5 rods = 33 spans | 4.5 rods = 99 spans |
| 2 rods = 44 spans | 5 rods = 110 spans |
| 2.5 rods = 55 spans | 5.5 rods = 121 spans |
| 3 rods = 66 spans | 6 rods = 132 spans |
A span is the distance measured by a human hand, from the tip of the thumb to the tip of the little finger. In ancient times, a span was considered to be half a cubit. Sometimes the distinction is made between the great span (thumb to little finger) and little span (index finger to little finger).
| 1 spans = 0.045454545454545 rods | 4 spans = 0.18181818181818 rods |
| 1.5 spans = 0.068181818181818 rods | 4.5 spans = 0.20454545454545 rods |
| 2 spans = 0.090909090909091 rods | 5 spans = 0.22727272727273 rods |
| 2.5 spans = 0.11363636363636 rods | 5.5 spans = 0.25 rods |
| 3 spans = 0.13636363636364 rods | 6 spans = 0.27272727272727 rods |
| 1 rods = 22 spans |
| 1 spans = 0.0454545 rods |