Acre foot
An acre-foot (symbol: ac ft) is a large unit of volume commonly used in the United States to measure water resources like reservoirs and aqueducts. It is defined as the volume required to cover an area of one acre to a depth of one foot, equaling exactly 43,560 cubic feet or approximately 1,233.5 cubic meters. Historically derived from agricultural land measures, the acre-foot remains a standard benchmark in hydrological accounting.
Metric
- Cubic kilometer (km³)1.23×10⁻⁶
- Cubic meter (m³)1,233.48
- Hectoliter (hl)12,334.82
- Decaliter123,348.2
- Cubic decimeter (dm³)1,233,481.98
- Litre (l)1,233,481.98
- Deciliter (dl)12,334,819.8
- Centiliter (cl)123,348,198.02
- Cubic centimeter (cm³)1.23×10⁹
- Milliliter (ml)1.23×10⁹
- Cubic millimeter (mm³)1.23×10¹²
- Microliter (µl)1.23×10¹²
British imperial liquid/dry
- Barrel7,537.32
- Bushel (bu)33,915.94
- Peck (pk)135,663.78
- Gallon (gal)271,327.55
- Quart (qt)1,085,310.08
- Pint (pt)2,170,621.15
- Fluid ounce (oz)43,412,410.63
U.S. liquid measure
- Acre foot1
- Cubic yard (yd³)1,613.33
- Barrel7,758.37
- Cubic foot (ft³)43,560.02
- Gallon (gal)325,851.65
- Quart (qt)1,303,405.61
- Pint (pt)2,606,811.21
- Gill10,427,248.55
- Fluid ounce (oz)41,708,984.35
- Cubic inch (in³)75,271,708.33
- Fluid dram333,671,924.14
- Minim2×10¹⁰
U.S. dry measure
- Barrel10,667.76
- Bushel (bu)35,003.25
- Peck (pk)140,013.03
- Gallon (gal)280,026.07
- Quart (qt)1,120,104.26
- Pint (pt)2,240,208.03
- Gill8,960,833.37
- Board foot (FBM)522,720.2
Cooking (U.S.)
- Cup5,213,624.89
- Tablespoon83,417,956.36
- Teaspoon250,253,881.43
Cooking (metric)
- Tablespoon82,232,136.13
- Teaspoon246,696,396.05
- Spice measure1.23×10⁹