About Zone2Cardio
A small, focused tool for people who want to do their easy cardio well.
Zone2Cardio.app does one thing: it helps you find your zone 2 heart rate and keep track of your weekly zone 2 minutes. You fill in your numbers, the calculator shows your range with the main methods side by side, and the planner keeps your log in your own browser so you can come back to it, print it and stick it on the fridge.
What we believe
- Transparent maths. Every formula is shown, with its origin: 220 − age, Tanaka’s 208 − 0.7 × age, Karvonen’s heart-rate reserve and Maffetone’s 180 formula. Read the details on zone 2 heart rate.
- Real sources only. Our guides cite studies and public health bodies we have actually read, linked at the bottom of each page. No made-up statistics.
- Honest about limits. Formulas are averages. Zone 2 is useful, not magic. We say so on benefits and fat loss too.
- Private by design. No account, no cookies. Your inputs and log stay on your device. See privacy.
Not medical advice
This site is for general information and fitness planning. It does not replace advice from your doctor. If you have a heart condition, take medication that affects your heart rate (such as beta-blockers), are pregnant or are new to exercise, talk to a health professional before you start.
Contact
Questions, corrections or ideas: info@zone2cardio.app.