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! 🚴💚
