Gas Mileage Calculator

Trip fuel cost and cost per mile.

Result

Gallons used2.86
Trip cost$10.00
Cost per mile10¢
IRS rate equivalent70

Gas Mileage Calculator — FAQs

IRS mileage rate?

70¢/mile for 2025 business use — covers fuel + depreciation + maintenance, much higher than fuel alone.

What counts as business mileage?

Trips for work purposes excluding your normal commute — HMRC pays 45p/mile (first 10k miles); IRS $0.70/mile for 2025.

How do I calculate real MPG?

Fill up, note the odometer; next fill, divide miles driven by gallons added — dashboard estimates often read 5–10% optimistic.

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