At a glance
Your stool type tells a story about what is happening in your digestive system. The Bristol Stool Scale provides a simple, objective way to describe and track stool consistency — information that is genuinely useful for managing colorectal conditions and communicating with clinicians.
This guide walks through each type, what it may indicate, and why this information matters for people managing bowel-related conditions.
The Bristol Stool Scale
Type 1: Separate hard lumps
Small, hard, pellet-like stools that are difficult to pass. This indicates stool has spent too long in the colon, with too much water absorbed.
What it suggests: Significant constipation. Slow transit, inadequate fibre or fluid intake, or other factors slowing bowel movement.
What people describe: Straining, discomfort, and feeling that each bowel movement is an ordeal.
Type 2: Lumpy and sausage-shaped
Stool that holds together but is lumpy and hard. Better than Type 1 but still indicates constipation.
What it suggests: Mild to moderate constipation. The stool is spending slightly too long in the colon.
What people describe: Difficult to pass, sometimes painful, and often associated with straining.
Type 3: Sausage with cracks on the surface
Well-formed stool with a sausage shape and visible cracks on the surface. This is within the normal range.
What it suggests: Normal transit time with adequate water content. Slightly on the firmer side of normal.
What people describe: Relatively easy to pass, satisfying, and complete-feeling bowel movements.
Type 4: Smooth and soft, like a snake
Smooth, soft, well-formed stool. This is generally considered the ideal type.
What it suggests: Optimal transit time and water balance. The stool is well-formed without being too hard or too soft.
What people describe: Easy, quick bowel movements that feel complete.
Type 5: Soft blobs with clear edges
Soft pieces with clear-cut edges. Slightly on the looser side of normal.
What it suggests: Rapid transit, possibly slightly more water content than ideal. Not necessarily a problem if this is your consistent normal.
What people describe: Easy to pass, possibly slightly too frequent.
Type 6: Fluffy pieces with ragged edges
Mushy stool with ragged edges. This is on the diarrhoea spectrum.
What it suggests: Faster than normal transit time. Possible irritation, infection, food intolerance, or other factors increasing gut motility.
What people describe: Urgency, possibly multiple trips to the toilet, and difficulty feeling fully evacuated.
Type 7: Entirely liquid
Watery stool with no solid pieces. This is diarrhoea.
What it suggests: Very rapid transit. Possible infection, inflammation, medication effect, or other acute cause.
What people describe: Urgency, cramping, and the need for immediate access to a toilet.
Why stool type matters for colorectal conditions
Hemorrhoids
Hard stools (Types 1-2) require straining that worsens hemorrhoids. The goal for hemorrhoid management is typically Type 3-4 — soft enough to pass without straining.
Fissures
Both extremes are problematic. Hard stools can re-tear a healing fissure. Very loose stools can irritate the fissure and cause chemical burning. Type 4 is generally the target.
Post-surgical recovery
After colorectal procedures, maintaining soft stools (Type 4-5) is typically recommended to avoid straining the surgical area while still having formed stools.
IBS
Tracking stool type is particularly useful for IBS, where the pattern often alternates or includes extremes. The type can help identify triggers and assess whether management strategies are working.
Tracking stool type
A brief daily record of stool type can be surprisingly useful:
- For your own awareness — patterns become visible over a week or two
- For clinical appointments — objective data is more useful than trying to remember
- For tracking dietary changes — you can see whether fibre increases are producing the desired effect
- For medication assessment — whether stool softeners or other medications are at the right level
You do not need elaborate tracking. A simple note of the type number once daily is sufficient. Our symptom journal tool can help if you prefer a structured approach.
Aiming for your target
For most people managing colorectal conditions, the goal is consistent Type 3-4 stools. The main tools for achieving this:
- Fibre intake — 25 to 30 grams daily
- Hydration — at least 1.5 to 2 litres of water daily
- Regular meals — consistent eating supports consistent bowel function
- Physical activity — movement promotes healthy bowel motility
- Stool softeners if needed — to prevent extremes