CO2 Calculator by mbay.dev
See how much CO₂ emissions and money you save by biking instead of driving!
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About this extension
CO₂ Calculator is a simple, privacy-friendly popup tool that shows you exactly how much CO₂ you avoid and money you save every time you choose your bike instead of your car.
Just enter your daily biking miles and local fuel price → get instant daily, weekly, monthly, and yearly savings in kg of CO₂ avoided and US dollars saved.
Features:
• Works 100% offline
• No permissions, no tracking, no data collection
• Choose your vehicle type (compact, average car, SUV/truck)
• Motivational medal system – become a Gold Eco-Warrior!
• Clean, beautiful design that fits perfectly in Firefox
Every mile you bike matters. Thank you for helping the planet! 🚴💚
Just enter your daily biking miles and local fuel price → get instant daily, weekly, monthly, and yearly savings in kg of CO₂ avoided and US dollars saved.
Features:
• Works 100% offline
• No permissions, no tracking, no data collection
• Choose your vehicle type (compact, average car, SUV/truck)
• Motivational medal system – become a Gold Eco-Warrior!
• Clean, beautiful design that fits perfectly in Firefox
Every mile you bike matters. Thank you for helping the planet! 🚴💚
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More information
- Add-on Links
- Version
- 3.0
- Size
- 145.69 KB
- Last updated
- 4 days ago (Nov 19, 2025)
- Related Categories
- License
- MIT License
- Version History
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