Bristol Stool Form Scale

Developed at the University of Bristol, U.K., the Bristol stool form scale is a recognized, general measure of stool consistency or form. Using this scale, you can help your physician sort out patterns or changes in bowel habit. Remember, this is intended as a general, not exact, measure. Use this guide to complete your diary and worksheet, and share the information with your physician.

Type 1 stool type1 Separate hard lumps like nuts (difficult to pass)
Type 2  stool type2 Sausage shaped but lumpy
Type 3 stool type3  Like a sausage but with cracks on surface
Type 4  stool type4 Like a sausage or snake, smooth and soft
Type 5  stool type5 Soft blobs with clear-cut edges (passed easily)
Type 6  stool type6 Fluffy pieces with ragged edges, a mushy stool
Type 7  stool type7 Watery, no solid pieces (entirely liquid)


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Animated Patient's Guide to Constipation