Calories Burned by Heart Rate Calculator

Estimate the calories you burn during exercise based on your heart rate.

Age

Gender

Male Female

Units

Weight (kg)

Exercise Duration

Average Heart Rate (bpm)

VO₂ max

Unknown Known

Your results will be displayed here.

All About Heart Rate and Calorie Burn

Your heart rate, measured in beats per minute (bpm), is a vital health indicator. While a lower resting heart rate is generally better, a higher heart rate during exercise is directly linked to burning more calories.

When you exercise, your muscles need more oxygen. Your heart beats faster to pump more oxygen-rich blood to them. For every liter of oxygen your body consumes, you burn approximately five calories. Therefore, a higher heart rate during a workout leads to increased oxygen consumption and, consequently, a greater calorie expenditure.

A normal resting heart rate for healthy adults is typically between 60 and 100 bpm. A rate consistently outside this range should be discussed with a medical professional.

The Formulas Used to Calculate Calories Burned

The calculation for calories burned based on heart rate is gender-specific and depends on whether your maximal oxygen uptake ($VO_2$ max) is known. $VO_2$ max is a measure of cardiorespiratory fitness.

When $VO_2$ max is Unknown:

The formulas are based on age (A), weight in kg (W), average heart rate (H), and exercise duration in minutes (T).

For Women: Calories = T × (0.4472×H - 0.1263×W + 0.074×A - 20.4022) / 4.184
For Men: Calories = T × (0.6309×H + 0.1988×W + 0.2017×A - 55.0969) / 4.184

When $VO_2$ max is Known:

The formulas become more precise by including your $VO_2$ max value (V) in ml/kg/min.

For Women: Calories = T × (0.45×H + 0.380×V + 0.103×W + 0.274×A - 59.3954) / 4.184
For Men: Calories = T × (0.634×H + 0.404×V + 0.394×W + 0.271×A - 95.7735) / 4.184

Source: Key, L. R., et al. (2005). Prediction of energy expenditure from heart rate monitoring during submaximal exercise. Journal of Sports Sciences.

Frequently Asked Questions

How do I calculate my $VO_2$ max?

While a precise measurement requires lab testing, you can estimate your $VO_2$ max using your Resting Heart Rate (RHR) and Maximum Heart Rate (MHR). Your MHR is often estimated as $220 - \text{age}$.

The formula is: $VO_2\text{max} = 15.3 \times (\text{MHR} / \text{RHR})$

For example, a 30-year-old (MHR = 190) with a resting heart rate of 65 would have an estimated $VO_2$ max of $15.3 \times (190 / 65) \approx 44.7 \text{ ml/kg/min}$.

How do I measure my heart rate?

To check your pulse, place your pointer and middle fingers on the inside of your opposite wrist, just below the thumb. Count the number of beats for 15 seconds and multiply by four to get your heart rate in beats per minute (bpm).

Does a higher heart rate mean more calories burned?

Yes, in general, the higher your heart rate is during exercise, the more calories you burn per minute. This is because a higher heart rate signifies a greater demand for oxygen by your body, and oxygen consumption is directly related to energy expenditure.