| QT Heart Rate Correction Formulas | |
| Exponential | Formula |
| Bazett | QT/RR1/2 |
| Fridericia | QT/RR1/3 |
| Linear | Formula |
| Framingham | QT + 0.154 (1-RR) |
| Hodges | QT + 1.75 (HR-60) |