CalculateMyHeartRate.com is an independent heart rate training tool built by Ethan Peterson, who holds a B.S. in Exercise Science from Southern Illinois University. The calculator applies the 1957 Karvonen formula to build training zones around a person's actual resting heart rate rather than a population-average age formula. It runs entirely in the browser, sends no data to a server, and requires no account. The site is not affiliated with any gym, supplement brand, or medical institution. Additionally, the website includes calculators for the Tanaka, Nes, Gulati, and 220-minus-age formulas, plus a blog on Heart Rate Zone training and related exercise topics.
