Auto & Fuel Calculators
Calculate fuel costs, track gas mileage, estimate EV charging expenses, and optimize your vehicle's fuel efficiency with our free auto and fuel calculators.
Fuel Cost Calculator
Estimate fuel costs for any trip based on distance, fuel efficiency, and gas prices.
Gas Mileage Calculator
Calculate your vehicle's fuel economy in MPG or L/100km from distance and fuel used.
Mileage Calculator
Calculate driving distance and mileage reimbursement based on IRS standard mileage rates.
EV Charging Calculator
Calculate electric vehicle charging time, cost, and energy consumption for your EV.
Fuel Consumption Calculator
Calculate fuel consumption rates and compare efficiency across different driving conditions.
How to Choose the Right Fuel Calculator
If you need to estimate trip costs before a road trip, the Fuel Cost Calculator gives you the total expense for any distance. For tracking your current fuel efficiency, the Gas Mileage Calculator converts your fill-up data into MPG and metric equivalents.
The Mileage Calculator is ideal for anyone who needs to track business miles for tax deductions or employer reimbursement. If you drive an electric vehicle, the EV Charging Calculator helps estimate charging costs and compare them against gasoline expenses.
For a comprehensive overview of your vehicle's fuel economy including annual costs and environmental impact, use the Fuel Consumption Calculator.
Understanding Fuel Efficiency and Costs
Understanding your vehicle's fuel efficiency can save hundreds of dollars per year. The average American drives approximately 13,500 miles annually, spending around $2,000 on gasoline at current prices.
Fuel efficiency varies significantly based on driving habits, vehicle maintenance, and road conditions. Highway driving typically delivers 15-30% better fuel economy than city driving due to consistent speeds and fewer stops.
Electric vehicles offer dramatically lower per-mile costs. At average U.S. electricity rates, an EV costs roughly $0.04-0.05 per mile compared to $0.12-0.15 per mile for a gasoline vehicle. However, charging time and infrastructure availability remain important considerations for EV owners.
The IRS standard mileage rate for 2026 is $0.70 per mile for business use, which covers fuel, depreciation, insurance, and maintenance costs in a single deduction.
Frequently Asked Questions
How is gas mileage (MPG) calculated?
MPG is calculated by dividing the total miles driven by the gallons of fuel used. For example, if you drove 300 miles on 10 gallons, your MPG is 30. For metric users, km/L divides kilometers by liters, while L/100km shows liters needed per 100 kilometers.
What is the IRS mileage rate for 2026?
The IRS standard mileage rate for 2026 is $0.70 per mile for business driving. This rate covers all vehicle operating costs including fuel, depreciation, insurance, and maintenance when used for tax deductions.
How much does it cost to charge an electric vehicle?
Charging costs depend on your electricity rate and vehicle efficiency. At the U.S. average of $0.16/kWh, fully charging a 60 kWh battery costs about $9.60. This provides roughly 210 miles of range, working out to about $0.046 per mile.
Is it cheaper to drive an EV or a gas car?
In most cases, EVs are significantly cheaper to operate per mile. The average EV costs $0.04-0.05 per mile in electricity, while a gasoline car averaging 25 MPG at $3.50/gallon costs about $0.14 per mile. That is roughly 65-70% savings on fuel costs alone.
How can I improve my car fuel efficiency?
Key strategies include maintaining proper tire pressure, avoiding aggressive acceleration and braking, using cruise control on highways, removing excess weight, keeping up with regular maintenance, and avoiding excessive idling. These habits can improve fuel economy by 10-30%.