US Fluid Ounces to Deciliters (fl oz to dL)

1 US fluid ounce equals 0.2957352956 deciliters (rounded).

1 US fluid ounce = 0.2957352956 deciliters

How to convert US fluid ounces to deciliters

To convert US fluid ounces to deciliters, multiply the number of US fluid ounces by 0.2957352956. The factor is rounded to 10 significant digits. To go the other way, multiply deciliters by 3.38140227 (rounded).

deciliters = US fluid ounces × 0.2957352956

Example: 10 US fluid ounces = 2.957352956 deciliters.

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

US Fluid Ounce (fl oz)

US customaryCurrent unit

One 128th of a US gallon, 29.5735 mL. Not the same as the weight ounce, and about 4% larger than the imperial fluid ounce.

Fluid ounce began as an attempt to link volume to weight: the volume occupied by one ounce of some substance, such as wine in England or water in Scotland. Definitions varied by region and by liquid. When Britain defined its imperial gallon in 1824 as the space of ten pounds of water, the imperial fluid ounce came out so that an ounce of water weighs about one avoirdupois ounce. The US fluid ounce followed a different path and comes from the older wine gallon.

The US fluid ounce is exactly 1/128 of a US gallon, 29.5735295625 milliliters, about 4 percent bigger than the imperial one at 28.4130625 milliliters. American nutrition labels use yet another figure, treating one fluid ounce as 30 milliliters, a convenient rounding for serving sizes. The name is a trap, because a fluid ounce measures space while a weight ounce measures mass. A US fluid ounce of water weighs a bit more than an ounce of weight, while a fluid ounce of honey weighs considerably more.

1 US fluid ounce = 0.02957352956 liters (approximately).

Sources: Wikipedia: Fluid ounce; NIST SP 811, Appendix B.8: conversion factors for volume; 21 CFR 101.9: nutrition labeling household measures

Deciliter (dL)

Metric (SI)Current unit

One tenth of a liter (100 mL). Common in recipes in Scandinavia and Switzerland.

Cookbooks and menus in Croatia, Switzerland and the Scandinavian countries still measure with the deciliter, writing recipes in dL where an American cook would reach for a cup. A deciliter is one tenth of a liter, so it holds 100 cubic centimeters, or 100 milliliters, and it is a little under half of a US customary cup.

The prefix deci- means one tenth. In practice the unit suits a household portion between a spoon and a full liter. Ten deciliters make a liter, and ten centiliters make a deciliter, so conversion needs only a shifted decimal point. The figure used here is exactly 0.1 liter. For scale, five deciliters make half a liter, and one deciliter is 100 times a single milliliter.

1 deciliter = 0.1 liters (exactly).

Sources: Wikipedia: Litre; Wikipedia: Metric prefix

Related conversions

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