Rate Pressure Product Calculator
Combine heart rate and systolic pressure. See the double product.
Your Measurements
Device display is a fixed illustrative example; it does not update.
What the Numbers Mean
Heart rate · Beats per minute
How often your heart beats.
Systolic pressure · Top number
Pressure when the heart contracts.
Before You Compare
- Keep the activity level consistent.
- Use the same measurement method.
- Note when the reading was taken.
Your Rate Pressure Product
Double product · an indirect workload index
The Two Measurements
—Heart rate
—Systolic pressure
Illustrative equipment — use your measured values. Captions update with inputs.
How Is This Calculated?
RPP = HR × SBP
Also called the double product.
Check the scale when comparing published values.
A Closer Look at Consistent Measurements
Rest & position
Sit quietly before a resting measurement.
Measure systolic pressure
Use the top number from your reading.
Record heart rate
Use beats per minute from the same period.
Calculation & Assumptions
Formula: RPP = HR × SBP
Inputs: Heart rate in bpm; systolic pressure in mmHg.
Scope: An indirect index, not a direct oxygen measurement.
Input limits & precision
Both inputs must be greater than 0 and at most 500, with up to six decimal places each. These are software limits, not clinical reference ranges. Decimal multiplication uses scaled integers and preserves the exact product. No diagnosis or exercise intensity target is generated.
Frequently asked questions
What is rate pressure product?
Rate pressure product (RPP), also called the double product, is heart rate multiplied by systolic blood pressure. It is an indirect index associated with cardiac workload and myocardial oxygen demand.
Is RPP a direct measure of oxygen use?
No. RPP is an indirect index. It does not measure oxygen consumption, diagnose a condition or set an exercise target.
Why do some sources show RPP ÷ 1,000?
Some publications scale RPP by 1,000. A raw product of 8,400 is 8.4 when expressed in thousands. Check the formula, units and scale before comparing values.
More questions (5)
What does the Rate Pressure Product calculate?
Rate Pressure Product Calculator Calculate rate-pressure product (RPP): cardiac workload indicator. RPP = Heart Rate × Systolic BP. Higher = greater oxygen demand. — free online calculator.
Which values should I enter?
Enter Heart Rate Bpm, Systolic Bp Mmhg using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: RPP = Heart Rate (bpm) × Systolic BP (mmHg).
Why might my result differ from another source?
Results can differ because measurement methods, rounding and assumptions vary. This calculator is an estimate and is not a medical diagnosis.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.
Sources & References
Blood pressure measurement guidanceAmerican Heart Association
Rate-pressure product research1978 exercise study · PMID 624164References provide context, not endorsement.