US Gallons to Deciliters (gal to dL)

1 US gallon equals 37.85411784 deciliters exactly.

1 US gallon = 37.85411784 deciliters

How to convert US gallons to deciliters

To convert US gallons to deciliters, multiply the number of US gallons by 37.85411784. This factor is exact. To go the other way, multiply deciliters by 0.02641720524 (rounded).

deciliters = US gallons × 37.85411784

Example: 10 US gallons = 378.5411784 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 Gallon (gal)

US customaryCurrent unit

Exactly 231 cubic inches or 3.785411784 liters (128 US fluid ounces). About 17% smaller than the imperial gallon.

The US gallon is a survivor of English wine trade. Around 1706, a statute in Queen Anne's reign fixed the wine gallon at exactly 231 cubic inches, settling confusion among the competing gallons for wine, ale and corn. British colonies in North America used that wine gallon, and in 1824 Britain replaced all its gallons with a new imperial one while the United States kept the old measure. It was adopted as the legal US standard in 1836 and is still defined as exactly 231 cubic inches, or 3.785411784 liters.

That makes the US gallon about 17 percent smaller than the imperial gallon, a difference that explains why American and British fuel-economy figures cannot be compared directly. Everyday uses are milk jugs, paint cans and gasoline pumps. One gallon divides evenly into four quarts, eight pints, sixteen cups and 128 fluid ounces. A gallon of water weighs a little over 8 pounds, an easy figure to remember when loading a car with water jugs.

1 US gallon = 3.785411784 liters (exactly).

Sources: Wikipedia: Gallon; NIST SP 811, Appendix B.8: conversion factors for volume

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

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