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Fuel Consumption Converter

Convert between different units of fuel consumption Convert between 8 different units instantly with our free online tool.

Fuel Consumption Converter
Convert between different units of fuel consumption
To
1 L/100km =235.2146 mpg (US)

Formula: 1 L/100km = 235.2146 mpg (US)

1 Liter per 100 km in all Fuel Consumption units
Click a unit to convert to it.

Available Fuel Consumption Units

8 units supported for instant conversion

Liter per 100 kmL/100km
Mile per Gallon (US)mpg (US)
Mile per Gallon (UK)mpg (UK)
Kilometer per Literkm/L
Liter per 10 kmL/10km
Mile per Litermi/L
Gallon per 100 Mile (US)gal/100mi (US)
Gallon per 100 Mile (UK)gal/100mi (UK)

About Fuel Consumption Conversion

Our free online fuel consumption converter helps you quickly and accurately convert between 8 different units of fuel consumption. Whether you're a student, professional, or simply need everyday conversions, you get instant, precise results with the formula displayed.

Convert between different units of fuel consumption This converter supports both metric and imperial units, making it ideal for international use. All conversions use internationally recognized standards and formulas.

Did You Know?

The fuel economy of commercial aircraft is about 3–4 liters per 100 passenger-km for modern planes like the Boeing 787 — comparable to driving a fuel-efficient car alone.

The world's least fuel-efficient vehicle is the US Army's M1 Abrams tank, which gets about 400 L/100km (0.6 mpg) on roads — and less than half that cross-country.

Hypermiling — the practice of extreme fuel economy driving — has achieved over 200 mpg (1.2 L/100km) in standard production cars using aerodynamic techniques and gentle acceleration.

The average fuel efficiency of new US passenger vehicles improved from about 19 mpg in 1978 to 29 mpg in 2022 — largely driven by CAFE (Corporate Average Fuel Economy) standards.

Why Use Our Fuel Consumption Converter?

Instant Results

Conversions update as you type — no button clicks needed.

High Precision

Uses internationally standardized conversion factors (SI & NIST).

8+ Units

Convert between 8 fuel consumption units used around the world.

API & AI Ready

REST API and MCP server let apps and AI assistants convert programmatically.

Common Fuel Consumption Conversion Table

Quick reference: Liter per 100 km (L/100km) to other common units.

Liter per 100 km (L/100km)Mile per Gallon (US) (mpg (US))Mile per Gallon (UK) (mpg (UK))Kilometer per Liter (km/L)Liter per 10 km (L/10km)
1235.2146282.48091000.1
2117.6073141.2405500.2
547.0429256.49619200.5
1023.5214628.24809101
259.40858311.2992442.5
504.7042925.64961925
1002.3521462.824809110

How to Use This Fuel Consumption Converter

1

Enter Value

Type the number you want to convert

2

Select From Unit

Choose your starting unit

3

Select To Unit

Pick your target unit

4

View Result

See instant conversion with formula

5

Copy Result

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Frequently Asked Questions — Fuel Consumption

How do you convert mpg to L/100km?
Divide 235.215 by the mpg value. Example: 30 mpg = 235.215 ÷ 30 = 7.84 L/100km.
How do you convert L/100km to mpg?
Divide 235.215 by the L/100km value. Example: 8 L/100km = 235.215 ÷ 8 = 29.4 mpg.
What is good fuel economy?
Under 6 L/100km (>39 mpg) is excellent. 6–8 L/100km (29–39 mpg) is good. 8–12 L/100km (20–29 mpg) is average. Over 12 L/100km (<20 mpg) is poor. Hybrid and electric cars effectively achieve equivalent values below 4 L/100km.
What is 40 mpg in L/100km?
40 mpg = 235.215 ÷ 40 = 5.88 L/100km. This is excellent fuel economy for a petrol car.
What does MPG stand for?
MPG stands for Miles Per Gallon. In the US this refers to US gallons; in the UK it uses Imperial gallons (which are ~20% larger), so UK MPG values are higher than US MPG for the same car.
What is the difference between US mpg and UK mpg?
US MPG uses the US gallon (3.785 L), while UK MPG uses the Imperial gallon (4.546 L). A car rated at 40 UK mpg = 33.3 US mpg. UK figures always appear higher.
How many km per liter is 30 mpg?
30 mpg (US) = 12.75 km/L. km/L = mpg × 0.4251.
What fuel economy does an electric vehicle achieve?
EVs use kWh/100km or MPGe (miles per gallon equivalent). A typical EV uses 15–20 kWh/100km, equivalent to roughly 100–150 MPGe — far more efficient than combustion engines.

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