Rate-Pressure Product Calculator — Cardiac Workload (RPP)
The Rate-Pressure Product (RPP), also called the double product, equals heart rate multiplied by systolic blood pressure. It is a simple, non-invasive estimate of how hard the heart is working and how much oxygen the heart muscle is consuming at any given moment.
bpm
mmHg
Normal
- 1
Heart rate
72Beats per minute — the first factor in the double product. - 2
Rate-Pressure Product
72 × 120 = 8,640
How does this calculator work?
RPP = Heart Rate × Systolic Blood Pressure. A healthy resting value is roughly 7,000–10,000 (e.g. 72 bpm × 120 mmHg = 8,640). Values above 20,000 — common during hard exercise — signal substantially increased cardiac workload and myocardial oxygen demand. This is an estimate; individual thresholds vary.
Formula
How this is calculated
The rate-pressure product is calculated by multiplying two easily measured quantities: heart rate in beats per minute and systolic blood pressure in mmHg. The product of these two numbers rises sharply with physical exertion or physiological stress because both heart rate and blood pressure increase together, and their combined effect on cardiac oxygen demand is roughly multiplicative rather than additive.
At rest in a healthy adult the RPP typically falls between 7,000 and 10,000 — for example, a resting heart rate of 70 bpm with a systolic pressure of 120 mmHg gives 8,400. During vigorous exercise the RPP commonly rises to 20,000–35,000. In exercise physiology and cardiac stress testing an RPP above roughly 20,000 is taken as a marker of substantially elevated myocardial workload; in individuals with coronary artery disease, chest pain or ECG changes often appear near an ischemic threshold of around 15,000–25,000, though this varies considerably between patients and is influenced by medications and fitness level.
This calculator is for educational and fitness-monitoring purposes only. The thresholds shown are generalised population estimates and do not replace clinical assessment. Consult a physician if you are using RPP to manage or monitor a cardiovascular condition.
Frequently asked questions
In healthy adults the resting RPP is typically 7,000–10,000 (for example 70 bpm × 120 mmHg = 8,400). Values above 12,000 at rest may warrant attention, though resting values vary with fitness, medications, anxiety, and hydration.
RPP correlates closely with myocardial oxygen consumption — more so than heart rate or blood pressure alone. Cardiologists track it during stress tests to identify the workload at which the heart begins to receive insufficient oxygen (the ischemic threshold), which is often around 20,000 in people with coronary artery disease.
Yes. Athletes and coaches sometimes track RPP to gauge cardiovascular strain during hard efforts. As aerobic fitness improves, the same absolute workload typically produces a lower RPP because resting and submaximal heart rates and blood pressure tend to fall.
Also known as
TG we-Calculate Editorial Team. (2026). Rate-Pressure Product Calculator — Cardiac Workload (RPP) [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/rate-pressure-product-calculator
TG we-Calculate Editorial Team. "Rate-Pressure Product Calculator — Cardiac Workload (RPP)." TG we-Calculate. 2026. https://we-calculate.com/calculator/rate-pressure-product-calculator.
TG we-Calculate Editorial Team, "Rate-Pressure Product Calculator — Cardiac Workload (RPP)," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/rate-pressure-product-calculator
@misc{wecalculate_rate_pressure_product_calculator, title = {Rate-Pressure Product Calculator — Cardiac Workload (RPP)}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/rate-pressure-product-calculator}}, year = {2026}, note = {TG we-Calculate} }
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