Convert Miles per US Gallon to US Gallons per Mile
Convert Miles per US Gallon (mpg (US)) to US Gallons per Mile (US gal/mi) instantly and accurately.
Conversion Formula
US gal/mi = 1 ÷ mpg (US)
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.
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.
Quick Reference Table
| Miles per US Gallon (mpg (US)) | US Gallons per Mile (US gal/mi) |
|---|---|
| 1 mpg (US) | 1 US gal/mi |
| 2 mpg (US) | 0.5 US gal/mi |
| 5 mpg (US) | 0.2 US gal/mi |
| 10 mpg (US) | 0.1 US gal/mi |
| 25 mpg (US) | 0.04 US gal/mi |
| 50 mpg (US) | 0.02 US gal/mi |
| 100 mpg (US) | 0.01 US gal/mi |