QTc (Bazett)
Corrected QT interval using Bazett formula.
What this calculator does
This tool corrects the QT interval from an ECG for heart rate using the Bazett formula. The corrected QT (QTc) is used to assess the heart’s electrical recovery time.
What your result means
QTc is interpreted in context; prolonged QTc can be relevant in certain conditions or with some medications. Only a healthcare provider can interpret your ECG and QTc.
This is not medical advice. A healthcare provider should interpret results in your context.
QT interval (ms)
Heart rate (bpm)
Key terms
- QTc
- QT interval corrected for heart rate; reflects the heart’s electrical recovery time.
- Bazett formula
- QTc = QT ÷ √(RR), where RR is the interval between heartbeats in seconds.
- QT interval
- Time on an ECG from the start of the QRS to the end of the T wave (ms).
Related calculators
- Fluid Deficit (Estimation)Other
- BMI CalculatorBody & metabolic
- BSA Calculator (Mosteller)Body & metabolic
- Ideal Body Weight (Devine)Body & metabolic
- Adjusted Body WeightBody & metabolic
- GFR (CKD-EPI)Renal & lab
- GFR (MDRD 4-variable)Renal & lab
- Creatinine Clearance (Cockcroft-Gault)Renal & lab
This tool is for educational and reference use only. It does not constitute medical advice. Always consult a healthcare professional for medical decisions.