Question 1

What is a target heart rate?

Accepted Answer

It's the ideal BPM range during exercise to reach a specific training intensity. Different zones target different fitness goals.

Question 2

Should I use the Karvonen formula?

Accepted Answer

Use it if you know your resting heart rate — it's more personalized and accounts for your individual fitness level.

Question 3

Is resting heart rate required?

Accepted Answer

No, but without it, only the standard age-based estimates are shown. Resting HR enables the more accurate Karvonen method.

Question 4

What are the main training zones?

Accepted Answer

Warm-up (50–60%), Fat-burning (60–70%), Cardio (70–80%), Hard (80–90%), and VO₂ Max (90–100%).

Target Heart Rate Calculator