EV Energy Efficiency Converter
Convert EV consumption and efficiency among Wh/km,kWh/100km,kWh/100miles,km/kWh and miles/kWh.
YOUR CALCULATION
Result
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Calculation steps
Work through one step at a time or reveal the complete calculation. The steps use your current inputs.
How to calculate
Normalize energy per distance and invert only when crossing to distance per energy.
km/kWh=1000/(Wh/km); 1mile=1.609344km
Worked example
180 Wh/km equals 18 kWh/100 km, about 28.968192 kWh/100 miles and about 5.55555556 km/kWh.
Assumptions and input details
Use the same battery-side or wall-side measurement definition throughout. The converter changes units without adding or removing charging losses. Zero or negative efficiencies are unsupported because reciprocals are undefined. No live vehicle data, trip cost, weather correction, usable battery capacity, range forecast or gasoline-equivalent MPG is inferred.
References: US DOE: EV energy-use and cost context
Using this calculator
Can I enter my own problem?
Yes. Replace the example values with your own inputs. The result, calculation steps, tables and applicable diagrams update from those inputs. Blank or invalid values clear the result; example values are never silently substituted for missing inputs.
Are the results exact?
Results use floating-point arithmetic and displayed rounding. Read the formula, assumptions and any stated data precision before interpreting the result.
Is my input uploaded?
The calculation runs in your browser. No account, file upload or external AI service is required. Inputs are not saved between page reloads.
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