🧪 Acid Base Balance Calculator
Estimate blood pH from bicarbonate (HCO3-) and PaCO2 values using the Henderson-Hasselbalch equation, a standard acid-base reference calculation.
What this calculator does
Acid-base balance in the blood is governed by the relationship between bicarbonate (a base) and carbon dioxide (an acid, via PaCO2). This calculator applies the classic Henderson-Hasselbalch equation to estimate blood pH from those two values.
The formula used
pH = 6.1 + log10(HCO3- ÷ (0.03 × PaCO2)), where HCO3- is in mEq/L and PaCO2 is in mmHg. A normal blood pH generally falls between about 7.35 and 7.45; values outside that range suggest acidosis or alkalosis.
This is a simplified reference calculation for general educational purposes. Real acid-base assessment requires a full clinical picture and should always be interpreted by a qualified healthcare professional.