Bristol Stool Scale Calculator
Classify stool form on the Bristol Stool Scale (types 1–7), estimate colonic transit time, and screen for functional constipation or diarrhea criteria.
Medical Disclaimer
This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. Never disregard professional medical advice or delay seeking it because of results from this tool.
Inputs
Results
Classification (0=Constip, 1=Normal, 2=Diarrhea)
1
Est. Colonic Transit (hours)
24
How to Use This Calculator
- Enter your Bristol Stool Type (1–7): 1 is hard lumps, 4 is ideal, 7 is liquid.
- Enter Frequency Per Day, Days Tracked, Urgency (0–3), and Straining (0–3).
- Enter Incomplete Evacuation score (0–3) to capture symptom burden beyond stool form.
- Review Stool Classification (constipation, normal, or diarrhea) and Estimated Colonic Transit Time.
- Check Functional Symptom Score to assess overall GI functional status for clinical discussion.
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