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Acid base balance calculator

This calculator will help to diagnose a patient’s acid-base status.


Enter the measured pH and pCO2 and get calculated hydrogen ion concentration and diagnosis of the patient’s acid-base status to see if he/she has normal acid-base status, simple metabolic or respiratory acidosis or alkalosis, or mixed acid base problems.

 Acid Base Balance Calculator
Enter data
pCO2 mm Hg
[H+] nM/L
Automatic recalculation 

Note: you need a JavaScript-enabled browser to use this page.


  • Bleich HL. Computer Evaluation of Acid-Base Disorders. J. Clin Invest. 1969.
  • Ewald G McKenzie C (editors). Manual of Medical Therapeutics. Little Brown & Company. 1995.
  • Goldberg M Green SB et al. Computer-based instruction and diagnosis of acid-base disorders. JAMA 1973.
  • McClatchey K. Clinical Laboratory Medicine. Williams & WIlkins. 1994.
  • Wallach J. Interpretation of Laboratory Tests. Little Brown & Company. 1996.
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