Baby poop color chart
Newborn stool changes color and texture almost weekly in the first month, and nearly all of it is normal. Three colors are the exception — white or chalky, red, and black after the first few days — and those always warrant a call.
The chart
| Color | Texture / when | What it usually means |
|---|---|---|
| Black, tarry | Thick and sticky, first 1–3 days | Meconium. Expected right after birth; should clear by about day four. |
| Dark green-brown | Looser, days 3–5 | Transitional stool as milk comes in. A good sign feeding is working. |
| Mustard yellow | Seedy, runny, slightly sweet smell | Classic breastfed stool from about day five onward. |
| Tan to light brown | Pastier, stronger smell | Typical formula-fed stool. Firmer than breastfed stool is normal. |
| Green | Any texture | Usually harmless — fast transit, an iron-fortified formula, or something in a nursing parent's diet. Watch it alongside diaper counts and mood. |
| Dark brown, formed | Once solids start | Expected after solids begin, often with visible bits of food. |
| White, chalky or pale grey | Any age | Call your pediatrician today. Can signal a bile-duct or liver problem. |
| Red streaks or specks | Blood in stool | Sometimes a small anal fissure or swallowed blood from a cracked nipple, but always worth a same-day call. |
| Black after day four | Tarry, not meconium | Can indicate digested blood. Call your pediatrician. |
How often is normal?
- Day 1–4: at least one dirty diaper per day of life (one on day one, two on day two).
- Week 1–6, breastfed: often 3–5 a day, sometimes with every feed.
- Formula-fed: typically 1–4 a day, firmer and more predictable.
- After six weeks: some breastfed babies go days between stools. Soft when it arrives and a comfortable baby is what matters, not the gap.
Texture worth mentioning
- Hard pellets or straining with a firm stool — constipation, worth a call.
- Watery, frequent and foul-smelling — possible diarrhea; watch hydration closely.
- Mucus that keeps appearing over several days, especially with fussiness.
- Frothy green with a lot of gas, feed after feed.
Why logging beats remembering
The pediatrician's first question is almost always "how many wet and dirty diapers?" A running count answers it in one look, and a shared log means the parent at the appointment knows about the 3am change the other parent handled. Pair this with the newborn diaper count guide.
Nestli is a record-keeping tool, not medical advice. When something looks wrong, call your pediatrician — a photo of the diaper helps.
Keep a running diaper count
Pee, poop or both — one tap, counted for the day, visible to both caregivers.
Start tracking now!