Target Heart Rate Calculator
Heart rate training zones using the Karvonen method.
Your result
Most health benefit comes from zones 2–3. Estimates can vary by 10 bpm either way between individuals.
Medical disclaimer: This tool is for education and is not medical advice. Read more.
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Find this tool when you want to:
Learn more
Heart Rate Zones Explained
Train smarter by understanding the five zones and what each does.
Fitness & ExerciseWarm-Up, Cool-Down and Injury Prevention
Simple habits to keep training consistently.
Fitness & ExerciseHow to Find Your Maximum Heart Rate
Compare the common formulas and learn why they are only estimates.
Frequently asked questions
What does the Target Heart Rate Calculator do?
Heart rate training zones using the Karvonen method. Enter your values and the result and chart update instantly.
How accurate is it?
It uses published, widely used formulas. Results are estimates for education and planning, not a diagnosis. Talk to a qualified clinician about decisions affecting your health.
Is my information stored or shared?
No. All calculations run in your browser and nothing you type is sent to a server or saved.
What can I search to find this tool?
People find it by searching for: what heart rate should i exercise at; fat burning zone; cardio zones; training heart rate.