MPG to L/100km Calculator
Convert between MPG and litres per 100km.
Enter your values
Enter the fuel economy in US MPG.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Litres per 100 km
- 7.35
- Imperial MPG
- 38.43
- Km per litre
- 13.6
- US MPG entered
- 32
Quick answer
L/100km is found by converting MPG to a distance-per-fuel ratio, then inverting it into fuel-per-distance.
L/100km = 235.215 / MPG (US)
At a glance
| What it does | Convert between MPG and litres per 100km. |
|---|---|
| Category | Automotive |
| Inputs needed | Fuel economy |
| Main output | Litres per 100 km |
| Formula | L/100km = 235.215 / MPG (US) |
| Cost | Free — no sign-up, no download |
How to use the MPG to L/100km Calculator
- 1Enter fuel economy in US miles per gallon.
- 2The calculator converts it to litres per 100km, imperial MPG and km per litre.
- 3Use this when comparing US-spec and international fuel economy figures.
Inputs explained
- Fuel economy(US MPG)
- Enter the fuel economy in US MPG.
Worked example
Using the values the calculator loads with:
Inputs
- Fuel economy32 US MPG
Results
- Litres per 100 km7.35
- Imperial MPG38.43
- Km per litre13.6
- US MPG entered32
Frequently asked questions
Why is imperial MPG higher than US MPG?
An imperial gallon is about 20% larger than a US gallon, so the same fuel efficiency shows a higher imperial MPG number.
Which unit is used in Europe?
Litres per 100km is the standard fuel economy unit across most of Europe.
What do I need to enter into the MPG to L/100km Calculator?
Just 1 value: fuel economy. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the MPG to L/100km Calculator work out the answer?
L/100km is found by converting MPG to a distance-per-fuel ratio, then inverting it into fuel-per-distance. It applies the formula L/100km = 235.215 / MPG (US) and shows the working so you can check each step by hand.
Is the MPG to L/100km Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.