What if ICE MPG is zero?

Gasoline cost and fuel savings are undefined; charging cost still calculates.

Are public charging fees included?

Only if you raise the electricity rate to reflect them.

Does this include vehicle purchase cost?

No. It compares operating fuel energy costs only.

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EV Charging Cost vs Gasoline Calculator

Compare monthly electricity and gasoline fuel costs from mileage and efficiency assumptions you control.

Monthly kWh

Charging cost

Gasoline comparison

Multiplies monthly miles by kWh per mile and electricity rate for charging cost, then compares with gasoline cost from MPG and price per gallon.

Limitation: Educational comparison only.

Jump to calculator · Sources & review

Free Calculators HubEV Charging Cost Calculator

CurrencyMonthly mileskWh per mileVehicle energy use; must be greater than zero.Electricity rate per kWhAssumed rate you enter; not a live utility quote.Gasoline price per gallonComparison assumption only.ICE miles per gallonComparison vehicle MPG. Use 0 to skip the gasoline comparison.

How to Estimate EV Charging Cost

Enter monthly driving, EV efficiency, electricity rate, and optional gasoline comparison inputs.

Choose a display currency; no conversion occurs.

Home rate vs public charging

Public DC fast charging often costs more than home overnight rates. Use the rate that matches the scenario you want to study.

What Charging Cost Means

Monthly kWh multiplies miles by kWh per mile. Charging cost multiplies that energy by your rate. Gasoline cost and fuel savings appear only when ICE MPG is greater than zero. The model does not include maintenance, insurance, or purchase price differences.

EV Charging Cost Examples

Thousand-mile month

Entered driving assumptions

monthlyMiles:1000

kwhPerMile:0.3

electricityRatePerKwh:0.15

gasolinePricePerGallon:3.5

iceMilesPerGallon:25

Charging vs gasoline

300 kWh; 45 charging; 140 gasoline; 95 savings

1,000 × 0.3 = 300 kWh; 300 × 0.15 = 45; 1,000 ÷ 25 × 3.5 = 140; savings = 95.

Lower-mileage scenario

Entered driving assumptions

monthlyMiles:800

kwhPerMile:0.25

electricityRatePerKwh:0.12

gasolinePricePerGallon:4

iceMilesPerGallon:30

Charging vs gasoline

200 kWh; 24 charging; 106.67 gasoline; 82.67 savings

800 × 0.25 = 200; 200 × 0.12 = 24; 800 ÷ 30 × 4 ≈ 106.67; savings ≈ 82.67.

Match units carefully

If you think in kWh per 100 miles, convert to kWh per mile before entering the efficiency field.

Frequently Asked Questions

No. Enter the prices you want to model.

Still have questions about this calculation?

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EV Charging Cost Formulas

No live electricity or gasoline price feed is used.

Formula

monthlyMiles × kwhPerMile

Monthly kWh

monthlyMiles × kwhPerMile

Monthly charging cost

monthlyKwh × electricityRatePerKwh

Monthly gasoline cost

monthlyMiles ÷ iceMilesPerGallon × gasolinePricePerGallon

Monthly fuel savings

monthlyGasolineCost − monthlyChargingCost

Scientific Background

Assumptions: constant efficiency and rates for the month. Limitations: weather, driving style, charging losses, and demand charges can change real costs.

Sources & review

EV Charging Cost Calculator documents the references behind its formulas and assumptions. Always treat results as educational estimates, not personalized professional advice.

Last reviewed

July 22, 2026

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