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Anion Gap Calculator

Health & Body

AG=Na⁺−(Cl⁻+HCO₃⁻) · metabolic acidosis typing

Quick Answer

Anion Gap Calculator: AG=Na⁺−(Cl⁻+HCO₃⁻) · metabolic acidosis typing. Anion Gap Calculator uses standard health formulas to compute accurate results instantly.

How it works

  1. 1AG=Na⁺−(Cl⁻+HCO₃⁻) — a corollary of electroneutrality
  2. 2Computed from three routine chemistry values
  3. 3Normal 8-12 mmol/L; correct −2.5 per 10 g/L albumin drop
  4. 4Elevated AG → work through the MUDPILES list

Chemistry inputs

mmol/L
mmol/L
mmol/L
Anion gap12.0mmol/L
Interpretation：Normal (8-12 mmol/L)
High-AG differentials (MUDPILES): methanol, uremia, DKA, propylene glycol/lactate (shock, hypoxia), ethylene glycol, salicylates. Normal-AG acidosis: diarrhea, renal tubular acidosis, saline overload (hyperchloremia). Hypoalbuminemia is the commonest cause of spuriously low AG — correct for measured albumin in critical illness. Educational reference only; clinical decisions belong to the treating physician.

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How to Use

  1. Enter body metrics: fill height, weight, age etc. as prompted by the Anion Gap Calculator.
  2. Read value and grade: results appear instantly with an authority-based classification.
  3. Check reference tables: confirm your range and healthy targets against the tables on this page.
  4. Back-solve your goal: adjust inputs to see what it takes to reach a target.

Key Points

  • Anion Gap Calculator is a free online health tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: AG=Na⁺−(Cl⁻+HCO₃⁻) · metabolic acidosis typing.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Anion Gap Calculator formula

Anion Gap Calculator uses standard health formulas to compute accurate results instantly.

FAQ

How do I use the Anion Gap Calculator?
Open the page and fill in the input fields — results update automatically. AG=Na⁺−(Cl⁻+HCO₃⁻) · metabolic acidosis typing.
Are the results accurate?
Results follow published international standards (WHO, ACE, IOM) and are for reference only.
Can this replace medical advice?
No. Always consult a qualified healthcare professional for health decisions.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on all devices.

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Source & Updates

Based on WHO, ACE, IOM and other published international standards. Last updated: 2025-07

Authoritative sources:

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. Anion Gap Calculator[EB/OL]. https://www.yijiansuan.com/en/c/health/anion-gap

Results provided by this tool are for reference only and do not constitute professional advice.