CalculateMyHeartRate.com is an independent site run by a small team. We read every message and aim to respond within 48 hours on weekdays.
General Inquiries
Questions about the calculator, how it works, or the Karvonen method.
contactus@calculatemyheartrate.com
Typical response: within 48 hours
Privacy & Data
Questions about our privacy policy, data practices, or GDPR / CCPA requests.
privacy@calculatemyheartrate.com
We respond within 30 days as required
Embed Widget
Want to add the Karvonen calculator to your site? See the embed guide or email us if you have custom needs.
Content & Corrections
Found an error in one of our articles, or have a suggestion for a topic we should cover?
Before You Write
You might find a quick answer in one of these places:
- Frequently Asked Questions on the calculator page covers the most common questions about zones, the Karvonen formula, and resting heart rate.
- About page has background on who built the site and what methodology we use.
- Blog has detailed guides on Zone 2 training, fat burning, max heart rate, and more.
What We Can't Help With
We're a calculator, not a medical service. We can't advise on specific training programs, diagnose health conditions, or interpret your heart rate data in a medical context. For personalized exercise prescriptions, please consult a certified exercise physiologist or your physician.