Anion Gap Calculator
Calculate serum anion gap. Free, instant.
How to Use Anion Gap Calculator
1
Enter Na, Cl, and HCO3.
2
Get anion gap.
3
Copy or download your result.
Frequently Asked Questions
What is a normal anion gap?
8–12 mEq/L without potassium, 10–14 mEq/L including potassium.