Fuel Economy Converter
A fuel economy converter translates vehicle mileage consumption between US miles per gallon (MPG), UK Imperial MPG, and liters per 100 kilometers (L/100km). Applying inverse metric formulas, it proves that an American car rated at 30 US MPG consumes approximately 7.84 liters of fuel per 100 kilometers.
By Daniel Okoro (Mathematics Editor) · Reviewed by Maya ChenUpdated · Published
From Unit:
Speed in mph
0mph
KM / HR
KNOTS
METERS / SEC
How Does the Fuel Economy Calculator Work?
- Enter your vehicle fuel rating.
- Select starting unit (US MPG, UK MPG, L/100km, km/L).
- Get converted ratings for international travel or vehicle spec comparisons.
What Is the Fuel Economy Formula?
L/100km = 235.215 / MPG_US ; MPG_UK = MPG_US × 1.20095
Inverse relationship between distance-per-volume and volume-per-distance.
Variables
Fuel:Mileage efficiency
How Do You Calculate Fuel Economy Step by Step?
Convert 30 US MPG to Liters per 100 kmRating: 30
Unit: US MPG
L/100km = 235.215 ÷ 30 = 7.84 L/100km
UK MPG = 30 × 1.20095 = 36.03 UK MPG
Final Solution:7.84 L/100km (36.03 UK MPG)
Fuel Economy Questions and Answers
Because the UK Imperial gallon is larger (4.546 L) than the US gallon (3.785 L), a car travels farther on a single UK gallon.