Max Heart Rate
Calculate your maximum heart rate using five validated formulas: Haskell and Fox, Tanaka, Nes, Inbar, and Oakland nonlinear. Enter your age for instant results and charts.
About This Calculator
The Max Heart Rate Calculator estimates your maximum heart rate (HRmax) — the highest number of beats per minute your heart can achieve during maximum physical exertion. Maximum heart rate is a key metric for athletes, runners, cyclists, and anyone who wants to train at the right intensity. It helps determine target heart rate zones for cardiovascular conditioning, fat burning, and peak performance training.
Our calculator uses five validated formulas to compute your max heart rate: the Haskell and Fox formula (220 minus age), the Tanaka, Monahan, and Seals formula (208 minus 0.7 times age), the Nes formula (211 minus 0.64 times age), the Inbar formula (205.8 minus 0.685 times age), and the Oakland nonlinear formula (192 minus 0.007 times age squared). Each formula was developed from different population studies, and showing all five gives you a realistic range rather than a single number.
The Haskell and Fox formula is the most commonly used in fitness settings but has a standard deviation of about 10 to 12 bpm. The Tanaka formula is often preferred for adults over 40 as it was validated on a broader age range. The Nes formula was developed from a large Norwegian population study, while the Inbar formula accounts for individual fitness variation. The Oakland nonlinear formula uses an age-squared term that better reflects the age-related decline in older adults.
Regional Notes: In the United States, the American Heart Association recommends using the Haskell and Fox formula (220 minus age) for general fitness guidance. In the United Kingdom, the NHS and British Heart Foundation also use the 220 minus age formula for target heart rate calculations. In India, cardiologists and sports medicine practitioners use similar formulas, with the Tanaka formula gaining preference for older adults. Regardless of region, the most accurate way to determine your true max heart rate is through a graded exercise test under medical supervision.
Frequently Asked Questions
What is maximum heart rate?
Maximum heart rate (HRmax) is the highest number of beats per minute your heart can achieve during maximum physical exertion without experiencing severe problems. It generally decreases with age and varies from person to person.
How is max heart rate calculated?
Max heart rate is calculated using formula-based methods. The most common is the Haskell and Fox formula: 220 minus your age. Other validated formulas include Tanaka (208 - 0.7 x age), Nes (211 - 0.64 x age), Inbar (205.8 - 0.685 x age), and Oakland nonlinear (192 - 0.007 x age squared).
Is the 220 minus age formula accurate?
The 220 minus age formula (Haskell and Fox) is the most widely used but has a margin of error of about 10 to 12 bpm. The Tanaka formula (208 - 0.7 x age) is considered more accurate for adults over 40. Our calculator shows results from all five formulas so you can see the range.
What is a healthy max heart rate for my age?
A healthy max heart rate depends on your age. For a 30-year-old, max HR ranges from approximately 181 to 190 bpm depending on the formula used. For a 50-year-old, it ranges from 173 to 179 bpm. Athletes may have slightly different values.
What is the difference between max heart rate and resting heart rate?
Max heart rate is the highest heart rate achieved during intense exercise, while resting heart rate is your heart rate when at rest (typically 60 to 100 bpm). Resting heart rate is an indicator of cardiovascular fitness, with lower values generally indicating better fitness.
When should I use target heart rate zones?
Target heart rate zones, typically 50 to 85 per cent of your max heart rate, are used during exercise to optimize training intensity. Moderate intensity is 50 to 70 per cent of max HR, while vigorous intensity is 70 to 85 per cent. Always consult your doctor before exercising above 85 per cent of max HR.
Can I measure my max heart rate without a formula?
Yes, the most accurate way is through a cardiac stress test performed on a treadmill with electrocardiograph monitoring. However, formula-based estimates are sufficient for most recreational athletes and fitness enthusiasts.
Does gender affect maximum heart rate?
Research shows that max heart rate formulas are generally similar for men and women. Some studies suggest women may have a slightly higher max HR, but age remains the dominant factor. The formulas used in this calculator work for all genders.