Acid-Base (ABG) Calculator
Result
Acid-Base (ABG) Calculator This acid-base calculator classifies an arterial blood gas (ABG) as acidemia, alkalemia or normal based on blood pH. Enter the pH, along with pCO2 and bicarbonate (HCO3-) for context, and it flags whether the blood is too acidic — free online calculator.
Formula
- Acid-Base (ABG) Calculator calculates its result from pH, pCO2 (mmHg), HCO3- (mEq/L). It uses the formula pH 7.35-7.45 = Normal. Change any input to recalculate the result instantly. This is an informational calculation and is not medical advice.
- The main inputs are pH, pCO2, HCO3-. Enter them in the units and format shown in the calculator.
- Use the measurement units shown beside each field. The result is an estimate and should be interpreted in context.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Acid-Base (ABG)
- pH: 7.4
- pCO2: 40 mmHg
- HCO3-: 24 mEq/L
Using pH = 7.4, pCO2 (mmHg) = 40, HCO3- (mEq/L) = 24, the calculated result is 7.4.
Sample result: Calculating…
Frequently asked questions
What does the Acid-Base (ABG) calculate?
Acid-Base (ABG) Calculator This acid-base calculator classifies an arterial blood gas (ABG) as acidemia, alkalemia or normal based on blood pH. Enter the pH, along with pCO2 and bicarbonate (HCO3-) for context, and it flags whether the blood is too acidic — free online calculator.
Which values should I enter?
Enter pH, pCO2, HCO3- using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: pH 7.35-7.45 = Normal.
Why might my result differ from another source?
Results can differ because measurement methods, rounding and assumptions vary. This calculator is an estimate and is not a medical diagnosis.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.