Target Heart Rate Calculator
Target Heart Rate Calculator helps you calculate training heart-rate zones quickly with transparent formulas.
Formula
THR = RHR + intensity*(MHR-RHR)
Step-by-step
- Compute max HR and reserve.
- Apply Karvonen intensity range.
Example
Using default values, result: Target zone 124-167 bpm
Frequently asked questions
How accurate is the Target Heart Rate Calculator?
Results are estimate-grade and depend on your inputs and assumptions.
Can I use Target Heart Rate Calculator for professional decisions?
Use this as guidance and verify with a qualified professional when stakes are high.
For educational purposes only. Results are estimates, not professional advice.
Last reviewed: 2026-07-14