Back To Course

High School Physics: Homework Help Resource22 chapters | 274 lessons

Watch short & fun videos
**Start Your Free Trial Today**

Instructor:
*Artem Cheprasov*

In this lesson you will learn how to convert milliliters into gallons using the relationships between the metric system, the U.S. customary units, and the British imperial units.

The unit of 'mL' is spelled out as 'milliliter.' 'Milli-' means 'one-thousandth.' A mL is a metric system unit, the kind of measurement system that's used in most of the world. A mL is a unit of volume.

Like a mL, a gallon is also a unit of volume. However, it is not a metric unit. A gallon is a unit of volume in the United States customary system of units.

To convert from mL to gallons, use the following steps:

**Step 1**

Know that 1 U.S. gallon = 3785.41 mL, which you can also find if you search for it on Google.

**Step 2**

Divide the number of mL you have by 3785.41 to get your answer in gallons. Let's say that you have 5,000 mL. How many gallons is that? Using the two steps above, you should write out your problem as:

(5,000 mL) / ( 3785.41 mL/gallon)

Please note, we defined a gallon by US customary units. However, it can also be defined using the British imperial system of measurement. In that case:

1 gallon = 4546.09 mL

When using U.S. customary units:

(5,000 mL) / ( 3785.41 mL/gallon) = 1.32 gallons

When using British Imperial units:

(5,000 mL) / (4546 mL/gallon) = 1.10 gallons

How would we use all of this in the real world? Well, let's say that you fill up your car with gas in the U.S. at a price of $3/gallon. Then, the next day you travel to a country called Mando, where you see the price of gas listed as $0.95/liter. Assume both countries use the same currency.

Which country has the more expensive gasoline?

Well, Mando sells its gas at $0.95/liter. As you learned before, a 'milli-' is one thousandth of something. Thus a milliliter is one-thousandth of a liter. In other words, there are 1,000 milliliters/liter. That means you are paying $0.95 per 1,000 milliliters of gas:

$0.95/liter = $0.95/1,000 mL

We need to figure out how many times 1,000 mL would fit into a gallon. Then we need to multiply that answer by $0.95 to figure out how much we are paying per gallon.

Recall that 3785.41 mL = 1 gallon.

Thus, divide 3785.41 mL by your 1,000 mL of gas to get:

3785.41 mL / 1,000 mL = 3.78

This means 1,000 mL fits into a gallon 3.78 times.

3.78 x $0.95 = $3.59

In Mando, we are paying $3.59/gallon for gas. That's quite a bit more expensive than in the U.S.!

You can solve this problem a bit more quickly and easily if you note the following. There are 3.78 liters/gallon. The U.S. has a price of $3/gallon. This is the same thing as saying $3 per 3.78 liters.

$3/3.78 = $0.79/liter $0.79/liter is cheaper than $0.95/liter. Thus, once again, Mando is still more expensive when it comes to buying gasoline! That's because all we did was double check our work using a different way of solving the problem.

To unlock this lesson you must be a Study.com Member.

Create your account

Already a member? Log In

BackDid you know… We have over 79 college courses that prepare you to earn credit by exam that is accepted by over 2,000 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

You are viewing lesson
Lesson
13 in chapter 1 of the course:

Back To Course

High School Physics: Homework Help Resource22 chapters | 274 lessons

- What is Physics? - Definition, History & Branches 5:56
- Math Review for Physics: Algebra 7:45
- Math Review for Physics: Trigonometry 5:16
- Elements of the SI: Base & Derived Units 7:41
- The Metric System: Units and Conversion 8:47
- Unit Conversion and Dimensional Analysis 10:29
- Significant Figures and Scientific Notation 10:12
- Linear & Direct Relationships 6:19
- Quadratic & Inverse Relationships 7:26
- How to Do Volume Conversions
- How to Convert Ounces to Liters
- How to Convert Liters to Gallons
- How to Convert mL to Gallons
- How to Convert Ounces to Gallons
- How to Convert Ounces to Cups
- How to Convert Stone to Pounds
- Physics of Resonance: Tacoma Narrows Bridge Collapse
- Go to Introduction to Physics: Homework Help

- Texas Pearson CNA Test: Practice & Study Guide
- Connecticut Prometric CNA Test: Practice & Study Guide
- South Carolina Pearson CNA Test: Practice & Study Guide
- Pennsylvania Pearson CNA Test: Practice & Study Guide
- California Pearson CNA Test: Practice & Study Guide
- TMJ & Jaw Dislocations
- Overview of American Imperialism During WWI
- Basics of Computer Programming
- Data, Storage & Algorithms
- Hardware & Systems Technology
- MTEL Content Test Requirements
- How to Earn Kanban Certification
- NES Test Results & Passing Scores
- WIDA Can Do Descriptors for Grades 3-5
- Overview of the PTE Academic Writing Section
- Homeschooling in Idaho
- MTEL Test Dates & Registration

- International Capital Budgeting: Approaches & Exchange Rate Risk
- How to Estimate Costs Using the Scatter Graph Method
- How to Evaluate Survey Questions & Design
- Quantifiers in Mathematical Logic: Types, Notation & Examples
- Rwandan Genocide Lesson for Kids: Summary & Facts
- Plantinga's Modal Ontological Argument for God
- What is a Yapok? - Habitat, Behavior & Facts
- Jack Cade: Biography, Rebellion & Monument
- Quiz & Worksheet - Protective Tariffs
- Quiz & Worksheet - Formation of the Mesoderm Layer
- Quiz & Worksheet - Enzyme Rate of Reaction Equation
- Quiz & Worksheet - E-Commerce for Hospitality
- Quiz & Worksheet - Heat of Vaporization
- Depreciation & Salvage Values Flashcards
- SAT World History: The Medieval Warm Period Flashcards

- Praxis Health & Physical Education - Content Knowledge: Practice & Study Guide
- WEST Middle Level Humanities (Subtests 1 & 2): Practice & Study Guide
- Anthem Study Guide
- MTEL Communication & Literacy Skills: Practice & Study Guide
- NCLEX-RN Study Guide & Practice
- CEOE Marketing: Professional Development
- MTTC Psychology: Learning
- Quiz & Worksheet - Variable Cost Formula
- Quiz & Worksheet - Food Sources of Lipids
- Quiz & Worksheet - Temperate Deciduous Forests
- Quiz & Worksheet - Process Costing
- Quiz & Worksheet - A Sound of Thunder

- HR Department: Definition, Function & Responsibilities
- Integers Lesson for Kids
- How to Study for the US Citizenship Test
- Animal Cell Project Ideas
- Homeschool Laws by State
- What Are the AP Exam Dates?
- What Are General Education Courses?
- Nervous System Experiments for Kids
- What to Do When Studying Abroad
- Georgia Biology Standards
- Homeschooling in Nebraska
- Bill of Rights Lesson Plan

Browse by subject