Liters to US Quarts (L to qt)

1 liter equals 1.056688209 US quarts (rounded).

1 liter = 1.056688209 US quarts

How to convert liters to US quarts

To convert liters to US quarts, multiply the number of liters by 1.056688209. The factor is rounded to 10 significant digits. To go the other way, multiply US quarts by 0.946352946.

US quarts = liters × 1.056688209

Example: 10 liters = 10.56688209 US quarts.

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

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

US Quart (qt)

US customaryCurrent unit

One quarter of a US gallon, 0.946353 L (32 US fluid ounces).

Quart is a word about fractions. It comes from Latin quartus, meaning one fourth, by way of French, and it was always meant to be a quarter of a gallon. Since gallons differed over the centuries, quarts did too. The US liquid quart is 57.75 cubic inches, about 0.9464 liters, while the imperial quart is a quarter of the 4.54609-liter imperial gallon, about 1.1365 liters. Canadian French even uses pinte for the imperial quart.

Older English trade also produced odd cousins. The Winchester quart was a big bottle holding two imperial quarts, later metricated to 2.5 liters, and the reputed quart of about 0.758 liters was once a standard British wine bottle size. In the United States a quart still means a carton of milk or cream or a tub of ice cream. Americans also use a separate dry quart, about 1.101 liters, for berries, so a quart of strawberries is larger than a quart of milk.

1 US quart = 0.946352946 liters (exactly).

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

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