Training Zone Calculators
for Women

Most people train too hard, too often, or not hard enough to see progress.

These calculators show you exactly where your effort should be.

Use your heart rate to understand how your body is responding, and your power output to measure what you’re producing.

When you train in the right zones, you build fitness more efficiently, without wasting time or burning out.

Enter your details below to find your zones and train with intention.

Heart Rate Zone

Power Zone

What Is Functional Threshold Heart Rate?

Your Functional Threshold Heart Rate (FTHR) is the highest average heart rate you can sustain for an extended period (around one hour).

It provides a useful reference point for setting your training zones, so you can better understand when to push and when to hold back.

Using FTHR can help you train more consistently, avoid overexertion, and make better use of the time you spend exercising.

Understanding Your Heart Rate Zones

Your heart rate zones are based on how your body responds to different levels of effort. Each zone represents a range of intensity, from very easy to maximal effort.

Training within these zones can help you structure your workouts more effectively, whether your goal is to build endurance, improve fitness, or support overall health.

Lower zones (1–2) are typically used for recovery and building aerobic capacity
Moderate zones (3–4) support sustained effort and improved fitness
Higher zones (5+) are more demanding and are usually used in shorter bursts

How to Use These Zones

You don’t need to train in every zone during every workout. Most well-balanced training plans include a mix of lower and higher intensity work across the week.

For many people, spending more time in lower intensity zones can support consistency and recovery, while occasional higher intensity sessions can help improve performance.

Important Considerations

Heart rate is influenced by many factors beyond exercise intensity, including sleep, stress, hydration, and hormonal fluctuations.

Because of this, your heart rate on any given day may vary, and that’s normal.

Use these zones as a guide rather than a strict rule, and pay attention to how you feel during training.

If you’re new to structured exercise or have any health concerns, consider speaking with a qualified professional before making significant changes to your routine.