Acre-feet to Liters (ac⋅ft to L)

1 acre-foot equals 1,233,481.838 liters (rounded).

1 acre-foot = 1,233,481.838 liters

How to convert acre-feet to liters

To convert acre-feet to liters, multiply the number of acre-feet by 1,233,481.838. The factor is rounded to 10 significant digits. To go the other way, multiply liters by 8.107131938×10⁻⁷ (rounded).

liters = acre-feet × 1,233,481.838

Example: 10 acre-feet = 12,334,818.38 liters.

Pints, quarts, gallons and fluid ounces differ between the US and the UK. Units are labeled 'US' or 'imperial' to avoid confusion.

About these units

Acre-foot (ac⋅ft)

US customaryTraditional unit (still used in some regions)

The volume of water that covers one acre to a depth of one foot: 43,560 cubic feet or about 1,233.48 cubic meters. Used for reservoirs and irrigation in the US.

Water engineers in the western United States took the acre, a land measure of 43,560 square feet that began as a strip one chain by one furlong, and gave it a depth of one foot to describe water. The result, the acre-foot, covers 43,560 cubic feet, which is about 1,233.48 cubic meters or roughly 1.23 million liters. In US gallons it comes to about 325,851.

The unit is used for reservoirs, canals, aqueducts, irrigation allotments and river flows, where the volumes are too large for gallons to be comfortable. A common planning rule treats one acre-foot per year as the water use of a suburban household, although Santa Fe households average closer to a quarter of that.

The size depends slightly on which foot is used. The figure used here follows the international foot of exactly 0.3048 m. The older US survey foot makes the unit about 0.0006 percent larger, a gap that matters little in practice. Most other countries state such volumes in cubic meters, megaliters or cubic kilometers.

1 acre-foot = 1,233,481.838 liters (approximately).

Sources: Wikipedia: Acre-foot; Wikipedia: Acre

Liter (L)

Metric (SI)Current unit

One cubic decimeter (1,000 cm³). The everyday metric unit of volume for drinks, fuel and cooking.

The liter was born in revolutionary France. In 1795 it was introduced as a republican unit and defined as one cubic decimeter, while the gram was tied to a cubic centimeter of water. The name comes from the older French litron, itself descended from a Byzantine Greek unit of weight, not volume. A small revision of the decimeter in 1798 left the first liter about 1.000974 of today's cubic decimeter, and in 1879 the international metric authorities adopted the liter with the symbol l.

The liter then took a strange detour. In 1901 it was redefined as the space taken up by one kilogram of pure water at its densest, which made it about 1.000028 cubic decimeters, and that muddled definition lasted until 1964, when it was restored to exactly one cubic decimeter. A capital L was added as an alternative symbol in 1979 because a lowercase l is easy to mistake for the digit 1, and NIST says L is the symbol to use in the United States. A liter of water is close to a kilogram, which is why a one-liter bottle feels like a kilo in the hand.

The liter is the reference unit for volume on this site.

Sources: Wikipedia: Litre; NIST Guide to the SI, Chapter 5: units outside the SI

Related conversions

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