Miles Per Tank Calculator
Estimate how far you can drive on a full tank from MPG and tank capacity.
Result
Effective range
378 mi
Theoretical full range: 420 mi.
- Tank capacity15 gal
- Reserve buffer10%
- Usable gallons13.50
- MPG28
- Range (with buffer)378 mi
- Range (full)420 mi
Step-by-step
- Usable gallons = 15 × (1 − 0.1) = 13.50.
- Range = usable × MPG = 13.50 × 28 = 378 mi.
How to use this calculator
- Enter your tank capacity (in the owner's manual or fuel-door sticker).
- Enter your MPG.
- Adjust reserve as you prefer.
About this calculator
Useful for planning fuel stops on long trips. The reserve buffer (10% is standard) accounts for the gap between "low fuel" warning and actual empty, which is typically 10-15%. Highway range is usually the upper bound; expect ~20% less in city driving.
Frequently asked
Yes — sediment from the bottom of the tank can clog the fuel filter, and the fuel pump (electric, lubricated by fuel) overheats when the tank is dry. Don't make a habit of it.
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