Last updated: April 25, 2026
QTJT Calculator is not a medical device.
QTJT Calculator is not a diagnostic tool.
QTJT Calculator does not provide medical advice, medical judgment, clinical monitoring, medication guidance, risk stratification, or treatment recommendations.
QTJT Calculator is provided solely as an educational ECG calculation tool for informational purposes only. It is not intended for diagnosis, treatment, cure, mitigation, monitoring, or prevention of any disease or medical condition, and it must not be relied upon for clinical decision-making, medication prescribing decisions, QT-risk assessment, emergency decisions, or patient care.
QTJT Calculator performs formula-based calculations only.
QTJT Calculator does not interpret ECGs.
QTJT Calculator does not determine whether a patient is safe to receive a medication.
QTJT Calculator does not determine whether a QT, QTc, JT, or JTc interval is clinically dangerous.
QTJT Calculator does not replace physician judgment, cardiology consultation, institutional protocols, or validated clinical references.
Use of QTJT Calculator is entirely at your own risk. To the maximum extent permitted by applicable law, the developers, owners, operators, contributors, and affiliates of QTJT Calculator disclaim all liability and responsibility for any claims, losses, damages, injuries, medical complications, treatment decisions, prescribing decisions, diagnostic decisions, ECG interpretation errors, data entry errors, calculation errors, software bugs, crashes, inaccuracies, omissions, device issues, or other harm arising from or related to use of the app, reliance on app content, formula outputs, abnormal-value highlighting, displayed thresholds, or inability to access the app.
THE APP IS PROVIDED “AS IS” AND “AS AVAILABLE,” WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF ACCURACY, RELIABILITY, MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, AVAILABILITY, OR FITNESS FOR CLINICAL USE.
Always consult a licensed physician, cardiologist, pharmacist, or other qualified healthcare professional for medical concerns or ECG interpretation.
Do not delay seeking medical care because of information entered into or displayed by QTJT Calculator.
QTJT Calculator is not for emergency use. If you believe you or someone else may be experiencing a medical emergency, call 911 or your local emergency services immediately.
QTJT Calculator is designed as a simple educational calculator.