Arterial Blood Gas (ABG) Calculator

Acid-base balance and metabolic parameters interpretation tool. Enter at least the following values below: pH, PaCO₂, and HCO₃, then click “Interpret blood gas.”

Arterial Blood Gases

pH 7.35 - 7.45

PaCO₂ (mmHg) 35 - 45

HCO₃⁻ (mEq/L) 22 - 26

PaO₂ (mmHg) 80 - 100

Base Excess (BE) -2 / +2

SatO₂ (%) > 95%

Electrolytes

Sodium (Na⁺) 135-145

Potassium (K⁺) 3.5-5.0

Chloride (Cl⁻) 98-107

Calcium (Ca²⁺) 8.5-10.5

Magnesium (Mg²⁺) 1.7-2.2

Lactate < 2.0

Hemoglobin and Fractions

Hemoglobin (Hb) 12-16 g/dL

Hematocrit (Ht) 36-48%

Carboxyhemoglobin (COHb) < 1.5%

Methemoglobin (MetHb) < 1.0%

Scientific References

• Hinkle, J. L., & Cheever, K. H. (2021). Brunner & Suddarth's Textbook of Medical-Surgical Nursing . 15th Edition. Wolters Kluwer.
• Kauffmann, R., et al. (2023). Arterial Blood Gas Interpretation . StatPearls Publishing.

Arterial Blood Gas (ABG) Calculator

Arterial Blood Gases

Electrolytes

Hemoglobin and Fractions

Acid-Base Diagnosis

Detailed Laboratory Analysis

Frequently Asked Questions

Scientific References