Multiply heart rate by systolic pressure to estimate myocardial oxygen demand at rest or exercise.
Result
How to use this tool
Enter resting heart rate in beats per minute.
Enter systolic blood pressure in mmHg.
Read the rate pressure product.
Compare it with the usual resting range of about 7,000 to 12,000.
Formula & worked example
72 beats per minute times 120 mmHg gives a rate pressure product of 8,640, within the usual resting range.
Limitations — read this before you rely on it
An indirect index of oxygen demand, not a direct measurement; it does not account for contractility, wall tension or coronary disease. This tool is for education only and is not medical advice. Talk to a clinician about any result that worries you, and never change treatment because of a calculator result.
Frequently asked questions
It tracks myocardial oxygen demand: faster heart rate and higher pressure both raise the heart’s oxygen needs.
Roughly 7,000 to 12,000, varying with fitness, age and medication.
Peak RPP shows how hard the heart worked, and angina at a low RPP is more concerning than at a high one.
No. Exercise, pain, anxiety and stimulants raise it too; it is one index, not a diagnosis.
Yes, RPP is often quoted in thousands, for example 8.64 x 10^3.