Gut Health Score Calculator
Assess gut health based on diet, bowel habits, symptoms, and lifestyle factors.
Returns a personalized 0-100 score with microbiome improvement tips.
Gut health refers to the balance and function of the microorganisms living in your digestive tract. A healthy gut microbiome is essential for digestion, immune function, mental health, and overall well-being.
How the score works:
This calculator evaluates your gut health across five key areas, each scored on a weighted scale:
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Fiber intake (25%): Fiber feeds beneficial gut bacteria. Adults should aim for 25–35 grams per day. A diet rich in fruits, vegetables, whole grains, and legumes supports microbiome diversity.
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Fermented food consumption (20%): Foods like yogurt, kefir, sauerkraut, kimchi, and kombucha introduce beneficial probiotics directly into your gut.
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Digestive symptoms (25%): Frequent bloating, gas, constipation, or diarrhea may indicate gut imbalance (dysbiosis). Fewer symptoms suggest a healthier gut environment.
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Processed food intake (15%): Ultra-processed foods, artificial sweeteners, and emulsifiers can disrupt the gut barrier and reduce bacterial diversity.
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Stress and sleep (15%): Chronic stress and poor sleep significantly impact gut bacteria composition through the gut-brain axis.
Score ranges:
- 80–100: Excellent gut health
- 60–79: Good, with minor areas to improve
- 40–59: Fair, consider dietary changes
- 20–39: Poor, significant improvements needed
- 0–19: Very poor, consult a healthcare provider
Practical tips: Increase fiber gradually, because going too fast causes exactly the bloating you are trying to fix. Add one fermented food a day. Cut back on ultra-processed food rather than banning it. Aim for 7 to 9 hours of sleep, and drink enough water to keep the intestinal mucus layer working.
One caveat on the scoring: the five areas are not independent. Poor sleep worsens symptoms, symptoms discourage fiber, and low fiber worsens sleep. A low score usually reflects one loop rather than five separate problems, which is why the result panel names a single weakest area instead of handing you a list of five things to fix at once.
This is a general wellness assessment, not a medical diagnosis. Persistent digestive issues should be evaluated by a healthcare professional.
How we build and check this calculator
This calculator runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
SuperGlobalCalculator is independently built and maintained. See how we build and verify our calculators.