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Albumin Globulin Ratio Calculator

Health

Calculate the albumin/globulin (A/G) ratio from serum albumin and total protein values. A standard lab reference calculation, not a diagnosis.

Reviewed by the thecalcu.com team · Last updated July 23, 2026

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Albumin/Globulin Ratio

1.5
Globulin
2.8

This calculator computes your Albumin/Globulin Ratio, Globulin from the values you enter.

Inputs
Serum AlbuminTotal Protein
Outputs
Albumin/Globulin RatioGlobulin

What is a A/G Ratio?

The Albumin Globulin Ratio Calculator computes the A/G ratio from serum albumin and total protein values, both commonly reported on standard blood chemistry panels. This is a standard lab reference calculation, not a diagnostic tool.

For related blood test calculations, see the ANC Calculator.

Why Use an Albumin Globulin Ratio Calculator?

Lab reports sometimes list total protein and albumin separately without directly stating the A/G ratio, requiring a manual calculation. This calculator performs that derivation instantly from the two values you already have.

Who Should Use This Calculator?

  • Anyone reviewing their own blood chemistry results who wants to calculate the A/G ratio.
  • Students of clinical chemistry or nursing learning how the A/G ratio is derived.
  • Healthcare educators demonstrating the standard A/G ratio formula.
  • Researchers working with serum protein data.

What Insights Does the Albumin Globulin Ratio Calculator Give You?

The Albumin/Globulin Ratio is the headline result, showing the balance between these two major protein categories. The Globulin figure shows the calculated intermediate value (total protein minus albumin) used to derive the ratio.

How to use this A/G Ratio calculator

  1. Enter your serum albumin value in g/dL.
  2. Enter your total protein value in g/dL.
  3. Read the Albumin/Globulin Ratio and Globulin results instantly.
  4. Discuss any specific lab results with a qualified healthcare professional for proper interpretation.
Show formula & methodology ↓Show less ↑

Formula & Methodology

Globulin = Total Protein − Albumin

A/G Ratio = Albumin ÷ Globulin

Worked example, an albumin of 4.2 g/dL and total protein of 7.0 g/dL:

Globulin = 7.0 − 4.2 = 2.8 g/dL

A/G Ratio = 4.2 ÷ 2.8 = 1.5

Frequently Asked Questions

What is the albumin/globulin (A/G) ratio?
The A/G ratio compares the amount of albumin to globulin in the blood, two major categories of serum protein, and is calculated from standard total protein and albumin blood test values.
How is the A/G ratio calculated?
Globulin is first calculated by subtracting albumin from total protein, and then the A/G ratio is calculated by dividing albumin by that globulin figure.
What are albumin and globulin?
Albumin is a major protein produced by the liver that helps maintain fluid balance in the blood, while globulins are a broader category of proteins that include antibodies and other functional proteins, together they make up most of total serum protein.
Where do I find the values needed for this calculator?
Total protein and albumin are both commonly reported on a standard blood chemistry panel, often as part of a comprehensive metabolic panel or liver function test.
Is this calculator a diagnostic tool?
No, this calculator performs the mathematical conversion only. Interpreting what a specific A/G ratio means for your health requires a qualified healthcare professional reviewing your complete lab results and clinical history.
Why is the A/G ratio calculated instead of just looking at albumin and globulin separately?
Expressing the relationship as a ratio makes it easier to spot patterns where the balance between the two protein types shifts, even when total protein itself remains within a typical range.
What units does this calculator use?
This calculator uses grams per deciliter (g/dL) for both albumin and total protein, the standard unit used in most blood chemistry reporting.
Can globulin be calculated without measuring it directly?
Yes, globulin is typically calculated as the difference between total protein and albumin rather than measured as a single direct test, which is exactly what this calculator does.
How does this relate to other lab ratio calculators on this site?
Like the [ANC Calculator](/anc-calculator/) and other blood count tools, this calculator performs a standard derived lab calculation from values you already have, rather than measuring anything directly.
What is a typical total protein range used in this calculator?
This calculator accepts total protein values typically in the range of 6-8 g/dL, matching common reference ranges for healthy adults, though your specific lab's reference range may vary slightly.
Also known as
A/G ratio calculatoralbumin globulin calculatorserum protein ratio calculatorglobulin calculator