Karvonen Formula

Calculate target heart rate for exercise. Heart rate reserve method.

Exercise Stats

Age

Rhr

bpm

Intensity: 70%

Low (50%)Max (100%)

Target Analysis

Target Heart Rate154bpmSuggested

Training ZoneEndurance70% Intensity

Max HR190

HR Reserve120

Target: 154 bpm. This intensity range focuses on building your endurance capacity. Maintain this rate for steady state cardio.

Disclaimer: This tool is for informational purposes only and is not a substitute for professional medical advice.

About this calculator

Overview

Karvonen uses heart rate reserve. More accurate than % max HR.

Fun Facts

Formula: THR = ((220−age − RHR) × %/100) + RHR