gal/100mi (US) to MPG (US) Converter
Convert gal/100mi (US) (gal/100mi) to MPG (US) (mpg) instantly. These units have an inverse relationship — use the converter above for accurate results.
Common Fuel Economy Conversions
gal/100mi (US) to MPG (US) Conversion Table
| gal/100mi (US) (gal/100mi) | MPG (US) (mpg) |
|---|---|
| 5 gal/100mi | 110.65192 mpg |
| 10 gal/100mi | 55.32596 mpg |
| 15 gal/100mi | 36.883973 mpg |
| 20 gal/100mi | 27.66298 mpg |
| 25 gal/100mi | 22.130384 mpg |
| 30 gal/100mi | 18.441987 mpg |
| 35 gal/100mi | 15.807417 mpg |
| 40 gal/100mi | 13.83149 mpg |
| 50 gal/100mi | 11.065192 mpg |
| 60 gal/100mi | 9.22099336 mpg |
| 80 gal/100mi | 6.91574502 mpg |
| 100 gal/100mi | 5.53259601 mpg |
How to Convert gal/100mi (US) to MPG (US)
gal/100mi (US) and MPG (US) have an inverse (reciprocal) relationship — one measures how far you go per unit of fuel (efficiency), while the other measures how much fuel is needed per distance (consumption).
To convert, the value is first expressed as km/L, then the target unit's formula is applied. A higher gal/100mi value corresponds to a lower mpg value (better economy in both cases).
Example: 30 gal/100mi (US) ≈ 18.441987 MPG (US)
Frequently Asked Questions
About These Units
A fuel consumption unit. Measures how much fuel a vehicle uses per unit of distance — lower is better.
A fuel efficiency unit. Measures how far a vehicle travels per unit of fuel — higher is better.