Calculators
Fuel Efficiency Calculator
Convert MPG ↔ L/100km and estimate trip fuel cost. Free fuel economy tool. Everything runs locally in your browser after the page loads.
Runs entirely in your browser. Your data never leaves this device.
- Runs in your browser
- No signup required
- Copy or download results
- Privacy-first MVP
- Mobile friendly
Workspace
Client-side · No upload
How it works
- Adjust the controls or paste your input.
- Preview results instantly in the browser.
- Copy or download the output — nothing is uploaded.
Key features
- Runs in your browser
- No signup required
- Copy or download results
- Privacy-first MVP
- Mobile friendly
FAQ
Is this private?
Yes — processing runs in your browser; we do not upload your inputs.
Do I need an account?
No — free to use without signup.
Does it work offline?
After the page loads, most tools work without further network calls.
Mobile friendly?
Yes — layouts adapt to smaller screens.
Keep building
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