To calculate your heart rate, place two fingers on your wrist or neck, count the beats for 30 seconds, and multiply by two. That gives you your heart rate in beats per minute (bpm). But knowing your number is only useful if you understand what it means, so here’s how to measure accurately, estimate your maximum heart rate, and use those numbers to guide your fitness.
How to Find Your Pulse
You have two easy spots to check. The first is your wrist (radial pulse): find the spot between your wrist bone and the tendon on the thumb side of your wrist. The second is your neck (carotid pulse): find the groove next to your windpipe on one side of your neck. In both cases, use the tips of your index and middle fingers to feel the pulse. Don’t use your thumb, because it has its own pulse that can throw off your count.
Press gently. Too much pressure on the neck artery can actually slow your heart rate and give you an inaccurate reading. On the wrist, too little pressure means you won’t feel anything. Adjust until each beat is distinct.
Counting the Beats
Once you feel a steady pulse, look at a clock or timer and count the number of beats in 30 seconds. Multiply that number by two, and you have your beats per minute. If you want a quicker estimate, count for 15 seconds and multiply by four, though this is slightly less accurate since any miscount gets amplified.
For the most reliable resting heart rate, measure first thing in the morning before you get out of bed or drink coffee. Sit or lie still for a few minutes beforehand. Your resting heart rate can shift by 10 or more bpm throughout the day depending on stress, caffeine, hydration, and temperature, so consistency matters.
What Your Resting Heart Rate Tells You
A normal resting heart rate for most adults falls between 60 and 100 bpm. Athletes and highly active people often sit lower, sometimes as low as 40 bpm, because a stronger heart pumps more blood per beat and doesn’t need to work as hard at rest. A resting rate that stays below 60 bpm in someone who isn’t particularly fit is called bradycardia and can sometimes signal an electrical issue with the heart. A resting rate consistently above 100 bpm is called tachycardia.
Within that 60 to 100 range, lower generally indicates better cardiovascular fitness. If you start exercising regularly and notice your resting heart rate dropping over weeks or months, that’s a concrete sign your heart is getting more efficient.
How to Estimate Your Maximum Heart Rate
Your maximum heart rate is the fastest your heart can beat during all-out effort. You can’t safely test this on your own, but two formulas give a reasonable estimate.
The simpler formula is 220 minus your age. A 35-year-old would get 220 minus 35, or 185 bpm. This has been used for decades, but it tends to overestimate max heart rate in younger people and underestimate it in older adults.
A more refined formula, developed by researcher Hirofumi Tanaka, is 208 minus (0.7 times your age). That same 35-year-old would get 208 minus 24.5, or about 184 bpm. The difference is small at age 35, but it grows at older ages. A 60-year-old gets 160 bpm with the simple formula but 166 bpm with Tanaka’s, which better reflects what studies observe in real testing. Either formula is an estimate with a margin of error of roughly 10 to 12 bpm in either direction.
Using Your Numbers for Exercise
Once you know your estimated max heart rate, you can figure out how hard you’re working during a workout. Moderate-intensity exercise, the kind recommended for general health, corresponds to about 50 to 70 percent of your maximum heart rate. Vigorous-intensity exercise falls between 70 and 85 percent.
For that 35-year-old with an estimated max of 185 bpm, moderate intensity means keeping your heart rate between roughly 93 and 130 bpm during exercise. Vigorous intensity means 130 to 157 bpm. These zones help you avoid both undertraining (barely elevating your heart rate) and overdoing it (pushing into a range you can’t sustain safely).
Heart Rate Reserve for More Precision
A more personalized approach factors in your resting heart rate. This is called heart rate reserve, and the math works like this: subtract your resting heart rate from your estimated max heart rate. That gap is your reserve. To find a target zone, multiply the reserve by your desired intensity percentage, then add your resting heart rate back.
For example, if your max is 185 and your resting heart rate is 65, your reserve is 120. For 60 percent intensity: 120 times 0.6 equals 72, plus 65 equals a target of 137 bpm. This method, sometimes called the Karvonen method, is more accurate for people whose resting heart rate is unusually high or low, because it accounts for your individual baseline rather than treating everyone the same.
Checking Your Heart Rate Recovery
One of the most useful numbers you can track is how quickly your heart rate drops after exercise. This is called heart rate recovery, and it’s a strong indicator of cardiovascular health. To measure it, note your heart rate at peak effort, then check it again exactly one minute after you stop exercising. Subtract the second number from the first.
A drop of 18 bpm or more after one minute is considered good, according to Cleveland Clinic data. A smaller drop suggests your cardiovascular system is slower to recover. Like resting heart rate, this number improves with consistent training. Tracking it over time gives you a meaningful way to measure fitness progress beyond weight or appearance.
Wearables vs. Manual Measurement
Fitness watches and chest straps can automate everything above, but they vary in accuracy. Optical wrist sensors (the green lights on most smartwatches) work well at rest and during steady-state exercise like jogging. They become less reliable during high-intensity intervals, heavy weightlifting, or any activity involving a lot of wrist movement. Chest strap monitors that detect electrical signals tend to be more accurate across all intensities.
Regardless of what device you use, it’s worth knowing how to check your pulse manually. It costs nothing, requires no battery, and takes 30 seconds. If a wearable ever gives you a reading that seems off, your fingers and a clock are the quickest way to verify it.