Gas Mileage Calculator

  • Enter the distance driven (in miles).
  • Enter the fuel consumed (in gallons).
  • Select the vehicle type.
  • Switch between miles/gallons and kilometers/liters units.
  • Drag the slider to select fuel efficiency.
  • Enter the fuel price per gallon.
  • Click "Calculate" to calculate fuel efficiency and cost.
  • Click "Clear" to reset the inputs.
  • Click "Copy Results" to copy the results to the clipboard.
25 MPG

Fuel Efficiency:

Fuel Cost:

Fuel Efficiency History:

In today’s world, where environmental concerns and rising fuel costs are ever-present, managing our vehicle’s fuel efficiency is of paramount importance. The Gas Mileage Calculator is a tool that plays a pivotal role in helping individuals and businesses monitor and optimize their fuel consumption.

What is Gas Mileage Calculator?

The Gas Mileage Calculator is a simple yet powerful tool used to determine the fuel efficiency of a vehicle. It provides valuable insights into how efficiently a vehicle consumes fuel by calculating its miles per gallon (MPG) or liters per 100 kilometers (L/100km). These metrics serve as key indicators of a vehicle’s performance and environmental impact.

Formulae Used in Gas Mileage Calculation

To calculate MPG or L/100km, the following formulas are employed:

  1. Miles per Gallon (MPG):
    • MPG = Total miles driven / Total gallons of fuel consumed
  2. Liters per 100 Kilometers (L/100km):
    • L/100km = (Total liters of fuel consumed / Total kilometers driven) * 100

These formulas are the foundation of the Gas Mileage Calculator, allowing users to quantify their vehicle’s fuel efficiency accurately.

Example Calculations

Let’s consider a scenario to illustrate the application of the Gas Mileage Calculator.

Example 1: MPG Calculation

Suppose a car has traveled 300 miles and consumed 12 gallons of fuel. To calculate its MPG:

MPG = 300 miles / 12 gallons = 25 MPG

Example 2: L/100km Calculation

For a different car that has driven 500 kilometers and consumed 45 liters of fuel, the L/100km calculation would be:

L/100km = (45 liters / 500 kilometers) * 100 = 9 L/100km

These examples showcase how the Gas Mileage Calculator provides a precise measurement of fuel efficiency, regardless of the units used.

Real-World Use Cases

The Gas Mileage Calculator finds application in various real-world scenarios, benefiting both individual consumers and businesses:

Personal Vehicle Management

Individuals can use the calculator to monitor their vehicle’s fuel efficiency over time, helping them make informed decisions about their driving habits and vehicle maintenance.

Fleet Management

Businesses with vehicle fleets rely on the Gas Mileage Calculator to optimize their operations. By tracking the fuel efficiency of each vehicle, they can reduce fuel expenses and minimize their carbon footprint.

Vehicle Purchasing Decisions

Prospective car buyers can use the tool to compare the fuel efficiency of different vehicle models. This information aids in making environmentally conscious choices and long-term cost savings.

Environmental Impact Assessment

Researchers and environmentalists use the calculator to estimate the carbon emissions of vehicles, contributing to studies on air quality and climate change mitigation.

Tax Deductions

In some regions, tax incentives are offered based on a vehicle’s fuel efficiency. The Gas Mileage Calculator helps individuals and businesses determine eligibility for these incentives.


The Gas Mileage Calculator is a fundamental tool for assessing and optimizing vehicle fuel efficiency. Its straightforward formulas provide users with valuable insights into their vehicle’s performance, allowing for informed decisions that lead to cost savings and reduced environmental impact. Whether for personal vehicle management, fleet optimization, or environmental research, this tool plays a vital role in promoting responsible and efficient fuel consumption.


  1. Anderson, J. M., & Shladover, S. E. (2014). Autonomous Vehicle Technology: A Guide for Policymakers. Rand Corporation.
  2. Gillingham, K. T., & Kotchen, M. J. (2017). Vehicle choice, miles driven, and pollution policies. Journal of Environmental Economics and Management, 85, 181-198.

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Hi! I'm Nidhi.

Here at the EHL, it's all about delicious, easy recipes for casual entertaining. So come and join me at the beach, relax and enjoy the food.

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