Gut Microbiome Score Calculator

Calculate a gut microbiome score from diversity, beneficial bacteria, harmful bacteria, and SCFA level.

1.1M uses Updated · 2026-05-25 Runs locally · zero upload
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How to Use the Gut Microbiome Score Calculator

Enter diversity index, beneficial bacteria percentage, harmful bacteria percentage, and short-chain fatty acid level. Diversity is normalized on a 0–5 scale; the other metrics use 0–100.

The calculator reports the composite score, normalized diversity, beneficial-minus-harmful gap, and SCFA level. The notes field is for lab context and is not used in the score.

Formula and Method - Gut Microbiome Score Calculator

Gut Microbiome Score = 0.35×normalized diversity + 0.30×beneficial % - 0.20×harmful % + 0.15×SCFA level

The model treats diversity as a stability signal, beneficial bacteria as a positive signal, harmful bacteria as a negative signal, and SCFA as a fermentation-metabolite signal. The weights are transparent estimates, not diagnostic criteria.

Use Cases for the Gut Microbiome Score Calculator

  • Summarizing key microbiome report metrics into a trackable score.
  • Comparing diet, prebiotic, probiotic, or antibiotic time points.
  • Showing how diversity, beneficial taxa, harmful taxa, and SCFA push the score.

Frequently asked questions about Gut Microbiome Score Calculator

Is this a clinical diagnosis?

No. It is a transparent weighted model based on supplied metrics.

What if diversity is above 5?

The calculator is designed for a 0–5 diversity scale, so other scales should be converted or interpreted cautiously.

Does the notes field affect the score?

No. It is for report context only.