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EV & CarsGenerated accuracy model review: 2026-05-06
MPG to MPGe Calculator accuracy and testing
This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.
Formula source
- MPGe = miles per kWh x 33.7. kWh per 100 miles = 100 / miles per kWh.
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Input Mode: Miles per kWh
- Efficiency Value: 3.5
Expected outputs
- Estimated MPGe: 117.95
- Miles per kWh: 3.5 mi/kWh
- Energy Use: 28.57 kWh/100 mi
Known limitations
- This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
- Use the result as a planning estimate unless the calculator page states a stricter purpose.
Assumptions
- All prices, fees, rates, and vehicle assumptions are user-entered.
- Calculations run locally in your browser and are not stored by Calwarden.
- This is planning math, not financial, tax, insurance, legal, or mechanical advice.
Unit handling
- Input Mode accepts one of the configured options.
- Efficiency Value accepts numeric values.
- Miles per kWh is displayed in mi/kWh.
- Energy Use is displayed in kWh/100 mi.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
- Input precision follows configured step values where provided.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current mpg-to-mpge-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for MPG to MPGe Calculator.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.