ABG Analyzer

Arterial Blood Gas analysis tool for healthcare professionals.

Inputs

PaCO₂ mmHg

HCO₃⁻ (mEq/L)

PaO₂ mmHg

FiO₂ (%)

Age (years)

Na⁺ (mEq/L)

Cl⁻ (mEq/L)

K⁺ (mEq/L) — optional

Albumin (g/dL) — optional

Lactate (mmol/L) — optional

Altitude (meters) — optional

All calculations occur locally in your browser.

Quick KPIs

Anion Gap (AG)

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Corrected AG (albumin)

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A–a Gradient

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PaO₂/FiO₂

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Interpretation

Enter values and click Calculate.

Formulas included: Anion Gap, albumin‑corrected AG, Delta Gap/Delta‑Delta, Alveolar Gas Equation (PAO₂ = FiO₂×(P_B−47) − PaCO₂/R; R=0.8), A–a gradient & expected by age, PaO₂/FiO₂ ratio, Winter’s formula, metabolic alkalosis compensation, acute/chronic respiratory compensation.