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MAF Heart Rate Calculator: Calculate Your Aerobic Training Zone

Calculate your Maffetone maximum aerobic heart rate from your age and training status, then use the resulting 10 bpm range to guide easy aerobic training.

1

Your Age

years
Enter your current age in years.
2

Training Status

Choose the option that best describes your current training and recovery status.

Your estimated MAF heart rate:

0 bpm

Your MAF heart rate is used as an upper aerobic training reference within the Maffetone method.

Your MAF Heart Rate Calculator Result

0
bpm MAF max
0–0
bpm aerobic range
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This calculator is for informational purposes only and is not medical or health advice. If you have a medical condition or concerns about exercise or heart rate, consult a qualified healthcare professional before changing your training.
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How Does the MAF Heart Rate Calculator Work?

The MAF Heart Rate Calculator estimates your maximum aerobic heart rate using the Maffetone 180 Formula. The method starts with 180 minus your age and can then apply an adjustment based on your current training and health status. The resulting number is used as the upper reference point of a practical 10 bpm aerobic training range.

Term What does it mean? In the calculation Why does it matter?
MAF heart rate The maximum aerobic heart rate used by the Maffetone method to guide controlled aerobic training. 180 − age ± adjustment It provides an upper heart-rate reference for keeping aerobic sessions relatively controlled.
Age Your current age in years. 180 − age Age is the central variable in the original 180 Formula.
Training status A Maffetone-style adjustment reflecting factors such as training consistency, health and recovery status. +5, 0, −5 or −10 bpm The adjustment is intended to make the calculated training reference more conservative when recovery or consistency is not ideal.
10 bpm aerobic range The practical range extending from 10 bpm below the calculated MAF maximum up to the MAF maximum. MAF − 10 to MAF It gives you a usable range rather than treating one exact heart-rate number as a rigid target.

1. Start With the 180 Formula

The Maffetone method starts by subtracting your age from 180. For example, a 30-year-old would have a base MAF value of 150 bpm before any training-status adjustment is considered.

2. Apply the Training Adjustment

The original method describes adjustments depending on factors such as training history, health and recovery. This calculator uses +5, 0, −5 or −10 bpm options to represent those established categories.

3. Use the 10 bpm Range

Instead of treating the MAF value as one exact target, the calculator shows a range from 10 bpm below your MAF maximum up to that maximum. This makes the result easier to apply during steady aerobic sessions.

MAF Heart Rate Formula:
180 − age + training-status adjustment = estimated MAF maximum heart rate

Practical aerobic range:
MAF maximum − 10 bpm to MAF maximum

The MAF 180 Formula is a method-specific training framework rather than a laboratory measurement of your aerobic threshold or an individualized medical heart-rate prescription. Actual heart rate can vary with temperature, hydration, fatigue, stress, illness, medication and other factors. This calculator is informational only and should not replace professional medical or exercise guidance.

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Fitness Calculators
MAF Heart Rate Calculator

MAF Heart Rate Calculator estimates your Maffetone maximum aerobic heart rate using the 180 Formula and your training status. Enter your age and training status to calculate your MAF maximum and practical 10 bpm aerobic range. The result can help you keep easy aerobic training controlled rather than turning every session into a hard effort. The calculation is based on the Maffetone method and is intended for informational and training-reference purposes, not as medical advice.

Medical Disclaimer: The calculator results and information provided in this article are for educational and informational purposes only and do not constitute medical, health, or professional advice. Always consult with a qualified healthcare provider before making any decisions related to your health, diet, or fitness goals. Individual results may vary, and this tool should not be used to diagnose or treat any medical condition.

What Is a MAF Heart Rate?

MAF heart rate is a training reference from the Maffetone method that aims to keep aerobic exercise at a controlled intensity. It is calculated primarily from age using the 180 Formula, with an adjustment based on training and recovery status. The resulting number can be used to guide easier running, cycling, walking, and other aerobic sessions.

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How Do You Calculate MAF Heart Rate?

The basic MAF calculation is 180 minus your age. The Maffetone method can then adjust that number based on factors such as training consistency, health, and recovery status. The result is used as an upper aerobic reference rather than a requirement to keep your heart rate at one exact number.

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What Is the 180 Formula?

The 180 Formula is the central calculation behind the Maffetone method. You subtract your age from 180 and then apply an appropriate adjustment when the method calls for one. For example, someone who is 30 would start with a base MAF value of 150 beats per minute before any adjustment.

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What Should Your MAF Heart Rate Be for Running?

Your MAF heart rate for running depends primarily on your age and the training-status adjustment used by the Maffetone method. The calculator also gives you a 10 bpm range below your calculated maximum, which can be easier to use during real runs. Your actual heart rate can still change because of heat, fatigue, hydration, stress, terrain, and other conditions.

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How Do You Use the MAF Heart Rate Zone?

Use your calculated MAF range as a reference during easy aerobic training rather than treating it as a rigid prescription. Running or cycling within a controlled aerobic range can help you distinguish easier endurance work from higher-intensity training. Pace may need to slow down, especially when you are first adapting to controlled aerobic training.

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Is MAF Training Good for Building Aerobic Fitness?

MAF-style training emphasizes controlled aerobic exercise and is commonly used as an approach to endurance development. Keeping easy sessions genuinely easy can allow you to accumulate aerobic training without making every workout highly demanding. The MAF formula itself is a general training method and does not replace individualized assessment of aerobic fitness or exercise intensity.

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