Clinical & CardioGenerated accuracy model review: 2026-05-06

Heart Rate from RR accuracy and testing

This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.

Formula source

HR = 60,000 / RR(ms) OR 60 / RR(s)

Test cases

Default input regression check

Generated from the checked-in default inputs and calculate function.

Inputs

RR Interval: 1,000 ms

Expected outputs

Heart Rate: 60 bpm
Frequency: 1 Hz

Known limitations

For educational and informational purposes only. Do not use for clinical diagnosis or treatment decisions. Ensure the rhythm is regular before using this method.

Assumptions

The result assumes the RR interval was measured correctly from a readable ECG tracing.
This is an instantaneous rate from one interval and may not represent irregular rhythms well.
It is a calculation aid and does not classify rhythm type or diagnose an arrhythmia.

Unit handling

RR Interval accepts values in ms.
Heart Rate is displayed in bpm.
Frequency is displayed in Hz.

Rounding rules

Number displays use up to 2 decimal places in the calculator UI.

Version history

1.0.0 - 2026-05-06

Generated accuracy and testing page from the current heart-rate-from-rr-interval calculator definition.

Change log

2026-05-06

Published default regression test documentation and metadata fallbacks for Heart Rate from RR.

Calculator transparency

Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.

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