Corrected QT (QTc) Calculator

Calculate corrected QT interval using Bazett and Fridericia formulas. Screen for QT prolongation.

⚠️ For educational purposes only. Always consult a qualified healthcare professional.

QT Interval (ms)

Heart Rate

bpm

Sex

0 ms

QTc (Bazett)

Bazett QTc

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Fridericia QTc

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Status

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Normal Upper Limit

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🔴 Prolonged QTc — risk of torsades de pointes. Review medications and electrolytes.