perch | 1 per | 2 per | 3 per | 4 per | 5 per | 6 per | 7 per | 8 per | 9 per | 10 per | 11 per | 12 per | 13 per | 14 per | 15 per | 16 per | 17 per | 18 per | 19 per | 20 per | 21 per | 22 per | 23 per | 24 per | 25 per | 26 per | 27 per | 28 per | 29 per | 30 per | 31 per | 32 per | 33 per | 34 per | 35 per | 36 per | 37 per | 38 per | 39 per | 40 per | 41 per | 42 per | 43 per | 44 per | 45 per | 46 per | 47 per | 48 per | 49 per | 50 per | 51 per | 52 per | 53 per | 54 per | 55 per | 56 per | 57 per | 58 per | 59 per | 60 per | 61 per | 62 per | 63 per | 64 per | 65 per | 66 per | 67 per | 68 per | 69 per | 70 per | 71 per | 72 per | 73 per | 74 per | 75 per | 76 per | 77 per | 78 per | 79 per | 80 per | 81 per | 82 per | 83 per | 84 per | 85 per | 86 per | 87 per | 88 per | 89 per | 90 per | 91 per | 92 per | 93 per | 94 per | 95 per | 96 per | 97 per | 98 per | 99 per | 100 per |
acre-inch | 0.0068182 ac in | 0.0136364 ac in | 0.0204545 ac in | 0.0272727 ac in | 0.0340909 ac in | 0.0409091 ac in | 0.0477273 ac in | 0.0545455 ac in | 0.0613636 ac in | 0.0681818 ac in | 0.075 ac in | 0.0818182 ac in | 0.0886364 ac in | 0.0954545 ac in | 0.1022727 ac in | 0.1090909 ac in | 0.1159091 ac in | 0.1227273 ac in | 0.1295455 ac in | 0.1363636 ac in | 0.1431818 ac in | 0.15 ac in | 0.1568182 ac in | 0.1636364 ac in | 0.1704545 ac in | 0.1772727 ac in | 0.1840909 ac in | 0.1909091 ac in | 0.1977273 ac in | 0.2045455 ac in | 0.2113636 ac in | 0.2181818 ac in | 0.225 ac in | 0.2318182 ac in | 0.2386364 ac in | 0.2454545 ac in | 0.2522727 ac in | 0.2590909 ac in | 0.2659091 ac in | 0.2727273 ac in | 0.2795455 ac in | 0.2863636 ac in | 0.2931818 ac in | 0.3 ac in | 0.3068182 ac in | 0.3136364 ac in | 0.3204545 ac in | 0.3272727 ac in | 0.3340909 ac in | 0.3409091 ac in | 0.3477273 ac in | 0.3545455 ac in | 0.3613636 ac in | 0.3681818 ac in | 0.375 ac in | 0.3818182 ac in | 0.3886364 ac in | 0.3954545 ac in | 0.4022727 ac in | 0.4090909 ac in | 0.4159091 ac in | 0.4227273 ac in | 0.4295455 ac in | 0.4363636 ac in | 0.4431818 ac in | 0.45 ac in | 0.4568182 ac in | 0.4636364 ac in | 0.4704545 ac in | 0.4772727 ac in | 0.4840909 ac in | 0.4909091 ac in | 0.4977273 ac in | 0.5045455 ac in | 0.5113636 ac in | 0.5181818 ac in | 0.525 ac in | 0.5318182 ac in | 0.5386364 ac in | 0.5454545 ac in | 0.5522727 ac in | 0.5590909 ac in | 0.5659091 ac in | 0.5727273 ac in | 0.5795455 ac in | 0.5863636 ac in | 0.5931818 ac in | 0.6 ac in | 0.6068182 ac in | 0.6136364 ac in | 0.6204545 ac in | 0.6272727 ac in | 0.6340909 ac in | 0.6409091 ac in | 0.6477273 ac in | 0.6545455 ac in | 0.6613636 ac in | 0.6681818 ac in | 0.675 ac in | 0.6818182 ac in |
A traditional unit of volume for stone and other masonry. A perch of masonry is the volume of a stone wall one perch (16 1⁄2 feet or 5.03 metres) long, 18 inches (45.7 cm) high, and 12 inches (30.5 cm) thick. This is equivalent to exactly 24 3⁄4 cubic feet (0.92 cubic yards; 0.70 cubic metres; 700 litres).
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
perch | per | ≡ 16 1⁄2 ft × 1 1⁄2 ft × 1 ft | = 0.700841953152 m3 | Imperial/US |
perches | acre-inches | perches | acre-inches |
---|---|---|---|
1 | = 0.0068181818181818 | 6 | = 0.040909090909091 |
2 | = 0.013636363636364 | 7 | = 0.047727272727273 |
3 | = 0.020454545454545 | 8 | = 0.054545454545455 |
4 | = 0.027272727272727 | 9 | = 0.061363636363636 |
5 | = 0.034090909090909 | 10 | = 0.068181818181818 |
The acre-inch is a unit of volume commonly used in the United States in reference to large-scale water resources, such as reservoirs, aqueducts, canals, sewer flow capacity, irrigation water, and river flows.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
acre-inch | ac in | ≡ 1 ac × 1 in | = 102.79015312896 m3 | Imperial/US |
acre-inches | perches | acre-inches | perches |
---|---|---|---|
1 | = 146.66666666667 | 6 | = 880 |
2 | = 293.33333333333 | 7 | = 1026.6666666667 |
3 | = 440 | 8 | = 1173.3333333333 |
4 | = 586.66666666667 | 9 | = 1320 |
5 | = 733.33333333333 | 10 | = 1466.6666666667 |
perches | acre-inches |
---|---|
1 | = 0.0068182 |
146.6666667 | = 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 …) |