Calculating your cost per km is straightforward once you know the EV Cost Per km 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 EV Cost Per km Calculator.
What is EV Cost Per km?
The EV Cost Per km calculation tells you your cost per km from a few simple inputs. The figure you are solving for here is the cost per km, expressed in INR.
The EV Cost Per km formula
The core formula is:
Cost per km = Energy use ÷ 100 × Electricity rateHere is what each input means:
- Energy use — a value measured in kWh/100km. Example: 18 kWh/100km.
- Electricity rate — a money amount. Example: ₹8.
How to calculate it step by step
- Write down the energy use (for example, 18 kWh/100km).
- Write down the electricity rate (for example, ₹8).
- Apply the formula above to get your cost per km.
- Double-check the result with the EV Cost Per km Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Energy use | 18 kWh/100km |
| Electricity rate | ₹8 |
| Cost per km | ₹1.44 |
| Cost per 100 km | ₹144.00 |
With energy use of 18 kWh/100km and electricity rate of ₹8, the cost per km works out to ₹1.44.
Example 2
With energy use of 36 kWh/100km and electricity rate of ₹8, the cost per km works out to ₹2.88.
| Result | Value |
|---|---|
| Cost per km | ₹2.88 |
| Cost per 100 km | ₹288.00 |
Example 3
With energy use of 9 kWh/100km and electricity rate of ₹8, the cost per km works out to ₹0.72.
| Result | Value |
|---|---|
| Cost per km | ₹0.72 |
| Cost per 100 km | ₹72.00 |
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 EV Cost Per km Calculator does it instantly, for free, with the formula and a worked example built in.
Related calculators
Continue exploring automotive calculators with these tools: Engine Displacement Calculator, Compression Ratio Calculator, Horsepower to Torque Calculator, Gear Ratio Calculator, Tire Size Calculator.