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Volume Conversion From Gallons To Liters
Converting Gallons to Liters
Worked Volume Unit Conversion Example Problem
by Anne
Marie Helmenstine, Ph.D.
This example problem
demonstrates how to convert gallons to liters.
Gallons and liters are two
common units of volume.
The liter is the metric
volume unit, while the gallon is the English unit.
However, the American gallon
and the British gallon are not the same!
The gallon used in the United
States is equal to exactly 231 cubic inches or 3.785411784 liters.
The Imperial gallon
or UK gallon is equal to approximately 277.42 cubic inches.
If you're asked to perform
the conversion, make sure you know which country it's for or you won't get the
correct answer.
This example uses the
American gallon, but the set-up for the problem works the same for the Imperial
gallon (just using 277.42 instead of 3.785).
Key Takeaways: Gallons to Liters
· The unit conversion between (American)
gallons and liters is 1 gallon = 3.785 liters.
· British and American gallons are not the
same. The American gallon is a smaller unit of volume and has a different
conversion factor.
· There are about four liters per gallon.
Gallons to Liters Problem
What
is the volume of a 5 gallon bucket in liters?
Solution
1 gallon = 3.785 liters
Set
up the conversion so the desired unit will be cancelled out. In this case, we
want liters to be the remaining unit.
volume in L = (volume in gal) x (3.785 L/1 gal)
volume in L = (5 x 3.785) L
volume in L = 18.925 L
In
other word, there are about 4x more liters when you convert from gallons.
Answer
A 5
gallon bucket contains 18.925 liters.
Liters to Gallon Conversion
You
can use the same conversion factor to convert liters to gallons or you can use:
1 liter = 0.264 US gallons
To
find how many gallons are in 4 liters, for example:
gallons = 4 liters x 0.264 gallons/liter
The
liters cancel out, leaving the gallon unit:
4 liters = 1.056 gallons
Keep
this in mind: there are about 4 liters per US gallon.
Anne Marie Helmenstine, Ph.D.
· Ph.D.
in biomedical sciences from the University of Tennessee at Knoxville - Oak
Ridge National Laboratory.
· Science
educator with experience teaching chemistry, biology, astronomy, and
physics at the high school, college, and graduate levels.
· ThoughtCo
and About Education chemistry expert since 2001.
· Widely-published
graphic artist, responsible for printable periodic tables and other
illustrations used in science.
Experience
Anne
Helmenstine, Ph.D. has covered chemistry for ThoughtCo and About Education
since 2001, and other sciences since 2013. She taught chemistry, biology,
astronomy, and physics at the high school, college, and graduate levels.
She has worked as a research scientist and also abstracting and indexing
diverse scientific literature for the Department of Energy.
In
addition to her work as a science writer, Dr. Helmenstine currently serves as a
scientific consultant, specializing in problems requiring an interdisciplinary
approach. Previously, she worked as a research scientist and college
professor.
Education
Dr.
Helmenstine holds a Ph.D. in biomedical sciences from the University of
Tennessee at Knoxville and a B.A. in physics and mathematics with a minor
in chemistry from Hastings College. In her doctoral work, Dr. Helmenstine
developed ultra-sensitive chemical detection and medical diagnostic tests.
Anne
Marie Helmenstine, Ph.D.
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