MPG (UK) to gal/100mi (US) Converter

Convert MPG (UK) (mpg UK) to gal/100mi (US) (gal/100mi) instantly. These units have an inverse relationship — use the converter above for accurate results.

MPG (UK) to gal/100mi (US) 6 units

Common Fuel Economy Conversions

MPG (UK) to gal/100mi (US) Conversion Table

MPG (UK) (mpg UK) gal/100mi (US) (gal/100mi)
5 mpg UK 132.887578 gal/100mi
10 mpg UK 66.443789 gal/100mi
15 mpg UK 44.295859 gal/100mi
20 mpg UK 33.221895 gal/100mi
25 mpg UK 26.577516 gal/100mi
30 mpg UK 22.14793 gal/100mi
35 mpg UK 18.98394 gal/100mi
40 mpg UK 16.610947 gal/100mi
50 mpg UK 13.288758 gal/100mi
60 mpg UK 11.073965 gal/100mi
80 mpg UK 8.30547364 gal/100mi
100 mpg UK 6.64437891 gal/100mi

📐 How to Convert MPG (UK) to gal/100mi (US)

MPG (UK) and gal/100mi (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 mpg UK value corresponds to a lower gal/100mi value (better economy in both cases).

Example: 30 MPG (UK) ≈ 22.14793 gal/100mi (US)

Convert gal/100mi (US) → MPG (UK) instead →

Frequently Asked Questions

Q How do I convert MPG (UK) to gal/100mi (US)?
These units have a reciprocal (inverse) relationship. To convert, first find the km/L equivalent, then apply the target unit's formula. Use the converter above for instant results.
Q What is 30 MPG (UK) in gal/100mi (US)?
30 MPG (UK) ≈ 22.14793 gal/100mi (US).

ℹ️ About These Units

MPG (UK)
mpg UK

A fuel efficiency unit. Measures how far a vehicle travels per unit of fuel — higher is better.

gal/100mi (US)
gal/100mi

A fuel consumption unit. Measures how much fuel a vehicle uses per unit of distance — lower is better.