Convert US Gallons per Mile to Miles per US Gallon
Convert US Gallons per Mile (US gal/mi) to Miles per US Gallon (mpg (US)) instantly and accurately.
Conversion Formula
mpg (US) = 1 ÷ US gal/mi
About US Gallons per Mile
US gallons per mile is for extreme consumption: 1 US gal/mi = 235.215 L/100km. Only tanks, heavy mining equipment, or large ships fall into even the fractional gal/mi range. A Boeing 787 burns ~3.9 US gal/mi total (0.015 gal/mi per seat at 85% load factor, 257 seats). Commercial aircraft fleet-wide emission intensity is sometimes expressed in gal/mi per departure. Oceangoing vessels historically logged fuel in US gal/mi in American regulatory frameworks. 1 US gal/mi = 235.215 L/100km = 1 mpg(US) ÷ 100.
About Miles per US Gallon
Miles per US gallon (mpg(US)) is the US and Canadian standard, displayed on every EPA Monroney sticker and used in CAFE regulations. The US gallon = 3.785411784 L; 1 mile = 1.609344 km. 2026 CAFE passenger car standard: ~49 mpg. Toyota Prius Prime: 52 mpg; Tesla Model 3: 132 MPGe. Historical: Ford Model T 21-25 mpg; 1973 US full-size cars 10-15 mpg. NASCAR at race speed: 4-5 mpg; Class 8 semi: 5-8 mpg. L/100km = 235.21458/mpg(US): 30 mpg = 7.84 L/100km; 50 mpg = 4.71 L/100km.
Quick Reference Table
| US Gallons per Mile (US gal/mi) | Miles per US Gallon (mpg (US)) |
|---|---|
| 1 US gal/mi | 1 mpg (US) |
| 2 US gal/mi | 0.5 mpg (US) |
| 5 US gal/mi | 0.2 mpg (US) |
| 10 US gal/mi | 0.1 mpg (US) |
| 25 US gal/mi | 0.04 mpg (US) |
| 50 US gal/mi | 0.02 mpg (US) |
| 100 US gal/mi | 0.01 mpg (US) |