MPGe Calculator (Miles Per Gallon Equivalent)

Enter your energy type, value to convert, distance travelled, and electricity price into this MPGe Calculator to find your vehicle's Miles Per Gallon Equivalent, alongside miles per kWh, kWh per 100 miles, and kWh per 100 km — giving you a complete picture of your EV or hybrid's real-world efficiency.

miles

For cost calculation (advanced mode only)

kWh

Total energy consumed for the distance

per kWh

Results

Converted Value

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MPGe Equivalent

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Miles per kWh

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kWh per 100 miles

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kWh per 100 km

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Wh per mile

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Total Energy Cost

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Estimated Annual Cost

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Energy Efficiency Comparison

Frequently Asked Questions

What is MPGe?

MPGe stands for Miles Per Gallon equivalent, a metric introduced by the EPA in 2010 to compare the energy consumption of electric vehicles with conventional gasoline vehicles. It represents how far an electric vehicle can travel using the energy equivalent of one gallon of gasoline.

How is MPGe calculated?

MPGe is calculated using the EPA's equivalency factor: 1 gallon of gasoline = 33.7 kWh of electricity. So if an EV uses 33.7 kWh to travel 100 miles, it has an MPGe rating of 100. The formula is: MPGe = (33.7 kWh ÷ kWh per 100 miles) × 100.

Why is MPGe important?

MPGe allows consumers to directly compare the efficiency of electric vehicles with gasoline vehicles using a familiar metric. It helps buyers understand energy costs, environmental impact, and make informed decisions when choosing between different vehicle types.

How does MPGe relate to my electricity bill?

Higher MPGe means lower energy consumption and reduced electricity costs. You can calculate your charging costs by dividing your local electricity rate by your vehicle's MPGe, then multiplying by 33.7 to get the cost per mile equivalent.

Is a higher MPGe always better?

Generally yes, higher MPGe indicates better energy efficiency and lower operating costs. However, consider other factors like vehicle size, performance, features, and your driving needs when choosing an electric vehicle.

How does MPGe compare to miles per kWh?

Miles per kWh is another efficiency metric for EVs. To convert: MPGe ÷ 33.7 = miles per kWh. For example, 120 MPGe equals about 3.56 miles per kWh. Both metrics measure efficiency but use different reference points.

Which cars have the best MPGe ratings?

The most efficient electric vehicles typically achieve 120+ MPGe. Smaller, lighter EVs like the BMW i3 and Hyundai IONIQ Electric often lead efficiency rankings, while larger vehicles like electric SUVs typically have lower MPGe ratings due to their size and weight.

Can I use MPGe to estimate my annual electricity costs?

Yes! Multiply your annual mileage by your electricity rate per kWh, then divide by your vehicle's MPGe and multiply by 33.7. For example: 12,000 miles × $0.13/kWh ÷ 120 MPGe × 33.7 = approximately $438 per year.

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