Calculating your mpge is straightforward once you know the MPGe formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the MPGe Calculator.
What is MPGe?
The MPGe calculation tells you your mpge from a few simple inputs. The figure you are solving for here is the mpge.
The MPGe formula
The core formula is:
MPGe = 3370 ÷ Energy use per 100 milesHere is what each input means:
- Energy use per 100 miles — a value measured in kWh. Example: 30 kWh.
How to calculate it step by step
- Write down the energy use per 100 miles (for example, 30 kWh).
- Apply the formula above to get your mpge.
- Double-check the result with the MPGe Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Energy use per 100 miles | 30 kWh |
| MPGe | 112.3 |
With energy use per 100 miles of 30 kWh, the mpge works out to 112.3.
Example 2
With energy use per 100 miles of 60 kWh, the mpge works out to 56.2.
| Result | Value |
|---|---|
| MPGe | 56.2 |
Example 3
With energy use per 100 miles of 15 kWh, the mpge works out to 224.7.
| Result | Value |
|---|---|
| MPGe | 224.7 |
Tips for an accurate result
- Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
- Round only at the very end. Rounding inputs early can shift the final answer noticeably.
- Re-run the numbers whenever an input changes, rather than estimating from an old result.
Prefer not to do the maths by hand? — the MPGe Calculator does it instantly, for free, with the formula and a worked example built in.
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