Heart Rate from an ECG Calculator
❤️ The human body. Use the Heart rate from an ECG formula to find heart rate, time between r waves: pick the value you want, type the others, and the answer updates as you go.
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| Heart rate | bpm |
| Time between R waves | s |
Worked example
Find the heart rate when Time between R waves = 0.8 s.
Using heart rate = 60/(time between beats): Heart rate = 75 bpm.
Frequently asked questions
What is the formula for Heart rate from an ECG?
heart rate = 60/(time between beats).
What do the letters stand for, and what units are used?
Heart rate in bpm, Time between R waves in s.
How do you calculate heart rate?
Put the values into heart rate = 60/(time between beats). For example, with Time between R waves = 0.8 s, heart rate = 75 bpm.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (heart rate, time between r waves) and fill in the others: it rearranges the formula for you.
