ABG Calculator & ABG Analyzer
Enter pH, PaCO₂, HCO₃⁻, and PaO₂ to quickly interpret arterial blood gas results, identify acid-base disorders, assess compensation, and classify oxygenation.
Enter ABG Values
Understanding ABG Interpretation
Arterial blood gas analysis helps identify primary acid–base disorders (respiratory vs. metabolic), gauge the degree of compensation, and assess oxygenation. This analyzer gives a quick summary; use ABGenius for guided practice and more repetition.
Want a deeper breakdown? Read the ABG Analysis Guide.
Why this ABG calculator is useful
This ABG calculator helps clinicians, students, and respiratory therapists quickly organize acid-base status, compensation, and oxygenation into one readable result.
For deeper learning and repeated case-based training, use ABGenius or read the ABG Analysis Guide.
Common ABG Questions
- What is a normal ABG? pH 7.35–7.45, PaCO₂ 35–45 mmHg, HCO₃⁻ 22–29 mEq/L.
- What does PaO₂ measure? Oxygenation status in arterial blood.
- What is compensation in ABGs? The body’s attempt to normalize pH via respiratory or metabolic mechanisms.
- How do you interpret ABGs? Determine pH → identify primary disorder → assess compensation → evaluate oxygenation.
Related ABG resources
Go deeper with our ABG Interpretation Step-by-Step Guide , review the ABG Analysis Guide , sharpen your skills with ABGenius , or calculate expected compensation with the Winter’s Formula Calculator.
ABG interpretation workflow
How to use this ABG analyzer
Use this ABG calculator when you already have arterial blood gas values and want a fast, organized interpretation. Enter pH, PaCO₂, HCO₃⁻, and PaO₂, then review the likely acid-base pattern and oxygenation category together.
- Start with pH to decide whether the blood gas shows acidemia, alkalemia, or a normal-range pH.
- Compare PaCO₂ and HCO₃⁻ to determine whether the primary disorder is respiratory, metabolic, or mixed.
- Use PaO₂ to classify oxygenation and decide whether hypoxemia is present.
For deeper study, read the ABG Analysis Guide or practice repeated cases with ABGenius.
Related tools & guides
Keep building acid-base confidence
Common ABG questions
ABG calculator FAQ
Quick answers for students, respiratory therapists, nurses, and clinicians reviewing arterial blood gas interpretation.
What is a normal ABG?
Normal ABG values are pH 7.35–7.45, PaCO₂ 35–45 mmHg, HCO₃⁻ 22–29 mEq/L, and PaO₂ 80–100 mmHg.
How do you interpret an ABG?
Start with pH, then compare PaCO₂ and HCO₃⁻ to identify the primary disorder, assess compensation, and finish by evaluating oxygenation.
What does PaO₂ indicate?
PaO₂ reflects arterial oxygenation and helps classify hypoxemia as mild, moderate, or severe.
What is compensation in ABGs?
Compensation is the body’s attempt to bring pH back toward normal through respiratory or metabolic adjustment.