MPG Calculator | US/UK Gallons, Liters & Diesel - Cost per Mile/Km

A Miles Per Gallon (MPG) Calculator is a tool designed to help you determine your vehicle's fuel efficiency. Whether you're calculating miles per gallon (MPG), liters per 100 kilometers (L/100 km), or kilometers per liter (km/L), this tool provides accurate results based on your inputs. It supports multiple units for distance (miles or kilometers) and fuel volume (liters, US gallons, or UK gallons).

MPG Calculator tool showing fuel efficiency metrics for US/UK gallons, liters, and diesel, with cost per mile/km calculation and unit conversion options.

What is Miles Per Gallon (MPG)?

Miles per gallon (MPG) is a measure of how far your vehicle can travel on one gallon of fuel. It is a crucial indicator of fuel efficiency. A higher miles per gallon value means your vehicle uses less fuel to cover the same distance, saving you money on fuel costs.

You'll commonly see this metric expressed as US MPG (used in the United States) or UK MPG (used in the United Kingdom), the difference being in the gallon measurement.

How many miles is 1 gallon of gas? The answer varies greatly depending on your car. Our calculator will help you understand the exact miles you can travel per gallon.

Why Use a MPG Calculator?

Fuel efficiency is a critical factor for drivers. Knowing your vehicle's MPG helps you:

  • Estimate fuel costs for trips.
  • Compare fuel economy between vehicles.
  • Make informed decisions to improve driving habits.

How to Use the MPG Calculator

  1. Input Distance Traveled: Enter the distance your vehicle traveled in miles or kilometers.
  2. Enter Fuel Consumed: Provide the amount of fuel used in liters, US gallons, or UK gallons.
  3. Calculate: The calculator will display results in MPG (US or UK), L/100 km, or km/L based on your preference.
  4. Optional: Add fuel price per liter or gallon to determine the cost per mile or kilometer.

Formula to Calculate MPG

To manually calculate miles per gallon, use the formula:

Example:
If you traveled 300 miles and used 10 gallons of fuel:

If you are interested to know how to calculate gallons per mile , simply divide the fuel consumed by the distance traveled. For how to calculate miles per gallon cost, you need the cost per liter or gallon and then, simply multiply the fuel used by the cost per liter or gallon, and further divide by the distance traveled. Our calculator handles all these calculations for you, allowing you to find the miles per gallon cost or the cost per distance.

Manually calculating miles per gallon can be cumbersome, which is why our calculator is designed to streamline the process

Converting MPG to Other Units

How Much is 40 MPG in Liters per 100 Kilometers?
To convert MPG to L/100 km, use:

For 40 MPG:

Examples and Scenarios

Example 1: Calculating Miles Per Gallon

  • Distance Traveled: 200 miles
  • Fuel Used: 8 US gallons
  • Calculation:

Example 2: Calculating Fuel Cost Per Mile

  • Distance Traveled: 150 miles
  • Fuel Used: 5 gallons
  • Fuel Price: $3 per gallon
  • MPG:
  • Cost per Mile:

Example 3: How Many Miles Can 1 Gallon of Gas Cover?
If your car has an efficiency of 25 MPG, 1 gallon of gas will allow you to travel:

FAQs About MPG

How Do I Calculate My Miles Per Gallon?

1. Measure the distance you traveled. 2. Record the amount of fuel used. 3. Divide the distance by the fuel consumed.

Is 20.0 MPG Good?

An MPG of 20 is average for older vehicles or larger vehicles like trucks and SUVs. Modern compact cars and hybrids often exceed 30-40 MPG.

How much is 40 MPG in liters?

40 US MPG is approximately 5.88 liters per 100 kilometers, our calculator will handle this conversion for you.

What are the main units for fuel economy?

The main units are miles per gallon (MPG), liters per 100 kilometers (L/100 km), and kilometers per liter (km/L).

Why do different countries use different units?

Different countries have their own standards and unit systems, so you will find fuel efficiency being expressed differently, such as MPG in the USA and L/100km in Europe.

How can I improve my MPG?

By maintaining your vehicle well, avoiding hard acceleration and braking, using cruise control on highways, and reducing the weight in your car.

Why is Understanding MPG Important?

Budgeting: Knowing your miles per gallon helps you estimate fuel costs for your regular trips and plan your budget effectively.

Cost Savings: Choosing a more fuel-efficient vehicle or improving your driving habits can significantly reduce fuel consumption and save you money over time.

Environmental Impact: Lower fuel consumption means reduced emissions, contributing to a cleaner environment.

Comparing vehicles: The mpg value helps you in comparing between different vehicles.

Fuel Economy Calculator

Calculate fuel economy in multiple units and optionally determine cost per distance.