Fuel Cost Calculator

Calculate the total fuel cost for any road trip or daily commute. Enter distance, your vehicle's fuel efficiency, and the current gas price to get cost per trip, monthly, and yearly. Also estimates CO2 emissions.

Gas Cost Calculator

Fuel Cost Formula

Gallons Used = distance (miles) / MPG Fuel Cost = gallons × gas price per gallon CO2 Emissions = gallons × 19.64 lbs/gallon (gasoline) 1 liter per 100 km = 235.2 MPG (conversion)

Average MPG by Vehicle Type

Vehicle TypeTypical MPG
Compact sedan30–38 MPG
Midsize sedan25–32 MPG
SUV (midsize)22–28 MPG
Pickup truck17–22 MPG
Hybrid (Toyota Prius)50–56 MPG
Minivan20–25 MPG

Frequently Asked Questions

How do I calculate MPG from a fill-up?+
Fill your tank completely. Drive normally. When you fill up again, note the miles driven since last fill-up and gallons added. MPG = miles driven ÷ gallons added. Repeat 2–3 times for a more accurate average.
What is the IRS mileage rate?+
The IRS standard mileage rate for 2024 is 67 cents per mile for business use. This rate covers fuel, maintenance, insurance, and depreciation. It's used to calculate tax deductions for business driving.

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About the Fuel Cost Calculator

This free fuel cost calculator helps you get accurate results instantly without needing to work through the math manually. Whether you need a quick estimate or a precise figure, having a reliable tool on hand saves time and reduces errors compared to manual calculation.

How to Use This Calculator

  1. Enter your values in the input fields above. Each field is labeled to guide you.
  2. Double-check your inputs — results are only as accurate as the numbers you enter.
  3. Click the Calculate button to see your result instantly.
  4. Use the result for your planning, budgeting, or decision-making.

Why Accurate Calculations Matter

Small errors in math calculations can compound into significant problems. A 1% miscalculation in a budget or measurement can translate to hundreds or thousands of dollars in wasted resources, or result in having to redo work entirely. This calculator uses the standard formulas and methods to give you reliable results you can trust.

Tips for Getting the Best Results

Frequently Asked Questions

Is this calculator free? Yes — completely free with no account, login, or payment required. Use it as many times as you need.

How accurate are the results? This calculator uses the standard formulas for fuel cost calculations. Results are accurate for typical use cases. For specialized or high-stakes applications, consult a professional.

Does it work on mobile? Yes. This calculator is fully responsive and works on smartphones, tablets, and desktops.