Behavior & Social

Toddler Not Potty Trained by Age 3

Medically reviewed by Dr. Emily Torres, PhD, CCC-SLP · Pediatric Speech-Language Pathologist

Content reviewed against published AAP, AAP, NIH guidelines

Editorial policy

Last reviewed:

Behavioral development varies greatly from child to child. If you have noticed toddler not potty trained by age 3, here is what you need to know.

The short answer

While many children are potty trained between ages 2 and 3, it is completely normal for some children to not be fully trained until age 3.5 or even 4. The AAP states there is no "right" age for potty training - readiness varies widely. Girls tend to train earlier than boys. Pressuring a child who is not ready often backfires, leading to resistance and regression. Signs of readiness include staying dry for 2+ hours, awareness of wet or dirty diapers, interest in the toilet, and ability to follow simple directions.

Key takeaways

  • While many children are potty trained between ages 2 and 3, it is completely normal for some children to not be fully trained until age 3.5 or even 4. The AAP states there is no "right" age for potty training - readiness varies widely. Girls tend to train earlier than boys. Pressuring a child who is not ready often backfires, leading to resistance and regression. Signs of readiness include staying dry for 2+ hours, awareness of wet or dirty diapers, interest in the toilet, and ability to follow simple directions.
  • Usually normal when: Your child is between 2 and 3.5 years old and not yet fully potty trained but is showing some readiness signs
  • Call your doctor if: Your child has sudden loss of bladder or bowel control along with neurological symptoms like leg weakness or gait changes
  • Varies by age — see the age-by-age breakdown below

This is one of the most common questions parents ask. Searching for answers means you care.

What Parents Should Know

According to AAP, NIH guidelines, while many children are potty trained between ages 2 and 3, it is completely normal for some children to not be fully trained until age 3.5 or even 4. The AAP states there is no "right" age for potty training - readiness varies widely. Girls tend to train earlier than boys. Pressuring a child who is not ready often backfires, leading to resistance and regression. Signs of readiness include staying dry for 2+ hours, awareness of wet or dirty diapers, interest in the toilet, and ability to follow simple directions. At 18-24 months, some children show early readiness signs at this age but most are not developmentally ready for full potty training. Introducing the potty as a concept, reading potty books, and letting your child sit on the potty (with no pressure) can build familiarity. Do not push training at this age - the average age of completion is 27-32 months for girls and 29-35 months for boys. It is generally considered normal when your child is between 2 and 3.5 years old and not yet fully potty trained but is showing some readiness signs. However, you should contact your pediatrician promptly if your child has sudden loss of bladder or bowel control along with neurological symptoms like leg weakness or gait changes.

Sources: [1], [2], [3]

Normal vs. Concerning

Usually Normal
Worth Discussing
Your child is between 2 and 3.5 years old and not yet fully potty trained but is showing some readiness signs
Your child has sudden loss of bladder or bowel control along with neurological symptoms like leg weakness or gait changes
Your child has mastered daytime training but still wears a diaper at night - nighttime dryness often lags by months or years
Your child is in severe pain during bowel movements or there is blood in the stool
Your child was doing well with potty training but had a brief regression during illness, travel, or a big life change
Your child is over 3.5 and shows no interest or awareness of needing to use the potty
Your child is potty trained for pee but still has occasional poop accidents
Your child seems to be withholding stool, straining, or having very hard bowel movements

By Age

What to expect by age

18-24 months

Some children show early readiness signs at this age but most are not developmentally ready for full potty training. Introducing the potty as a concept, reading potty books, and letting your child sit on the potty (with no pressure) can build familiarity. Do not push training at this age - the average age of completion is 27-32 months for girls and 29-35 months for boys.

2-2.5 years

Many families begin potty training in this window. If your child resists after a few days of consistent effort, take a break and try again in a few weeks or months. Power struggles over the potty are counterproductive and can delay training. Signs your child is ready include telling you when they need a diaper change, hiding to poop, and showing interest in older children or adults using the toilet.

2.5-3 years

This is the most common age range for successful potty training. If your child is not showing interest despite readiness signs, try making it fun (stickers, special underwear they choose) and celebrate small successes. Daytime training typically comes before nighttime dryness. If there is preschool pressure to be potty trained, know that most programs work with families and many children are still training at this age.

3-4 years

About 15-20% of children are not fully daytime potty trained by age 3, and this is within the normal range. If your child is 3.5+ and showing no interest or ability, mention it to your pediatrician. Causes of delayed training can include constipation (the most common medical cause), sensory sensitivities, developmental delays, anxiety, or simply a strong-willed temperament. Addressing underlying constipation often dramatically improves potty training success.

4+ years

If a child over 4 is not potty trained for stool (encopresis) or is still wetting during the day, a medical evaluation is recommended to rule out structural issues, chronic constipation, or other factors. Nighttime wetting (enuresis) is separate and remains common through age 5-7. A child who was trained but regresses may be responding to stress, a new sibling, a move, or a medical issue like a UTI.

What to Tell Your Pediatrician

  • Describe when you first noticed toddler not potty trained by age 3 and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if your child is over 3.5 and shows no interest or awareness of needing to use the potty.
  • Mention if your child seems to be withholding stool, straining, or having very hard bowel movements.
  • Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
  • Bring a list of any questions or observations you want to discuss at the appointment.

What Should You Do?

When to take action

Probably normal when...
  • Your child is between 2 and 3.5 years old and not yet fully potty trained but is showing some readiness signs
  • Your child has mastered daytime training but still wears a diaper at night - nighttime dryness often lags by months or years
  • Your child was doing well with potty training but had a brief regression during illness, travel, or a big life change
  • Your child is potty trained for pee but still has occasional poop accidents
Mention at your next visit when...
  • Your child is over 3.5 and shows no interest or awareness of needing to use the potty
  • Your child seems to be withholding stool, straining, or having very hard bowel movements
  • Your child was fully trained but has regressed for more than 2-3 weeks without an obvious cause
  • Your child has frequent urinary accidents alongside urgency, pain with urination, or new bedwetting
Act now when...
  • Your child has sudden loss of bladder or bowel control along with neurological symptoms like leg weakness or gait changes
  • Your child is in severe pain during bowel movements or there is blood in the stool

What You Can Do at Home

  • Keep track of when you notice toddler not potty trained by age 3 — noting the time of day, duration, and any triggers can help your pediatrician.
  • Remember that your child is between 2 and 3.5 years old and not yet fully potty trained but is showing some readiness signs — this is generally within the range of normal.
  • At 18-24 months, focus on observation rather than intervention unless your pediatrician advises otherwise.
  • Respond consistently and calmly to your baby's behavior. Maintain predictable daily routines.
  • While monitoring at home, seek immediate care if your child has sudden loss of bladder or bowel control along with neurological symptoms like leg weakness or gait changes.

Potty Training Refusal

Potty training refusal is one of the most common challenges parents face with toddlers. Many children simply are not ready when parents expect them to be, and pushing too hard often makes the resistance worse. The average age for potty training readiness is between 2 and 3 years, but some children are not truly ready until closer to 3.5 or even 4. Backing off, reducing pressure, and waiting for signs of readiness is usually the most effective strategy.

Potty Training Regression

Potty training regression is extremely common and almost never a cause for medical concern. Many children who were reliably using the toilet start having accidents again during times of stress, change, illness, or developmental leaps. This is a temporary setback, not a failure. With patience and a calm, supportive approach, most children return to their previous potty skills within a few weeks.

Toddler Afraid of the Potty

Fear of the potty or toilet is very common in toddlers and is a normal part of development. The toilet can genuinely seem scary to a small child - it is loud, it has a big hole, and things disappear into it. Some children are afraid of falling in, others are afraid of the flushing sound, and some are worried about losing a part of themselves. With patience, gradual exposure, and zero pressure, most children overcome potty fears completely.

Milestone

Milestone Checklists by Age

Track your baby's developmental milestones from birth to 5 years with age-specific checklists.

Milestone

Month-by-Month Development

Detailed monthly development guides from birth through 24 months.

Guide

When to Call the Doctor

General guide on when to call the pediatrician, visit urgent care, or go to the ER.

Frequently asked questions

Is toddler not potty trained by age 3 normal?
While many children are potty trained between ages 2 and 3, it is completely normal for some children to not be fully trained until age 3.5 or even 4. The AAP states there is no "right" age for potty training - readiness varies widely. Girls tend to train earlier than boys. Pressuring a child who is not ready often backfires, leading to resistance and regression. Signs of readiness include staying dry for 2+ hours, awareness of wet or dirty diapers, interest in the toilet, and ability to follow simple directions.
When should I call the doctor about toddler not potty trained by age 3?
Your child has sudden loss of bladder or bowel control along with neurological symptoms like leg weakness or gait changes Your child is in severe pain during bowel movements or there is blood in the stool
When is toddler not potty trained by age 3 normal?
Your child is between 2 and 3.5 years old and not yet fully potty trained but is showing some readiness signs Your child has mastered daytime training but still wears a diaper at night - nighttime dryness often lags by months or years Your child was doing well with potty training but had a brief regression during illness, travel, or a big life change
What causes toddler not potty trained by age 3?
While many children are potty trained between ages 2 and 3, it is completely normal for some children to not be fully trained until age 3.5 or even 4. The AAP states there is no "right" age for potty training - readiness varies widely. Girls tend to train earlier than boys. Pressuring a child who is not ready often backfires, leading to resistance and regression. Signs of readiness include staying dry for 2+ hours, awareness of wet or dirty diapers, interest in the toilet, and ability to follow simple directions. Common explanations include: Your child is between 2 and 3.5 years old and not yet fully potty trained but is showing some readiness signs. Your child has mastered daytime training but still wears a diaper at night - nighttime dryness often lags by months or years.
What should I mention to my pediatrician about toddler not potty trained by age 3?
You should mention toddler not potty trained by age 3 at your next visit if: Your child is over 3.5 and shows no interest or awareness of needing to use the potty. Your child seems to be withholding stool, straining, or having very hard bowel movements. Your child was fully trained but has regressed for more than 2-3 weeks without an obvious cause.
Is toddler not potty trained by age 3 normal at 18-24 months?
Some children show early readiness signs at this age but most are not developmentally ready for full potty training. Introducing the potty as a concept, reading potty books, and letting your child sit on the potty (with no pressure) can build familiarity. Do not push training at this age - the average age of completion is 27-32 months for girls and 29-35 months for boys.
Is toddler not potty trained by age 3 normal at 2-2.5 years?
Many families begin potty training in this window. If your child resists after a few days of consistent effort, take a break and try again in a few weeks or months. Power struggles over the potty are counterproductive and can delay training. Signs your child is ready include telling you when they need a diaper change, hiding to poop, and showing interest in older children or adults using the toilet.
Should I go to the ER for toddler not potty trained by age 3?
Seek emergency care if your child has sudden loss of bladder or bowel control along with neurological symptoms like leg weakness or gait changes, or if your child is in severe pain during bowel movements or there is blood in the stool. When in doubt, call your pediatrician's after-hours line for guidance.
Does toddler not potty trained by age 3 go away on its own?
In many cases, toddler not potty trained by age 3 resolves on its own, especially when your child is between 2 and 3.5 years old and not yet fully potty trained but is showing some readiness signs. By 4+ years, if a child over 4 is not potty trained for stool (encopresis) or is still wetting during the day, a medical evaluation is recommended to rule out structural issues, chronic constipation, or other factors. Nighttime wetting (enuresis) is separate and remains common through age 5-7. A child who was trained but regresses may be responding to stress, a new sibling, a move, or a medical issue like a UTI.
AAPAAPNIH

References

  1. [1]American Academy of Pediatrics. Toilet Training. HealthyChildren.org. AAP
  2. [2]American Academy of Pediatrics. Toilet Training Readiness Signs. HealthyChildren.org. AAP
  3. [3]Schum TR, et al. Sequential Acquisition of Toilet-Training Skills. Pediatrics. 2002;109(3):e48. NIH

Doctor Visit Checklist

Bring this checklist to your next pediatrician visit to discuss Toddler Not Potty Trained by Age 3.

Things to mention

  • Describe when you first noticed toddler not potty trained by age 3 and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if your child is over 3.5 and shows no interest or awareness of needing to use the potty.
  • Mention if your child seems to be withholding stool, straining, or having very hard bowel movements.
  • Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
  • Bring a list of any questions or observations you want to discuss at the appointment.

Observations to share

  • Your child is over 3.5 and shows no interest or awareness of needing to use the potty
  • Your child seems to be withholding stool, straining, or having very hard bowel movements
  • Your child was fully trained but has regressed for more than 2-3 weeks without an obvious cause

Urgent signs to report immediately

  • Your child has sudden loss of bladder or bowel control along with neurological symptoms like leg weakness or gait changes
  • Your child is in severe pain during bowel movements or there is blood in the stool

My notes

From ismybabyalright.com — free, evidence-based baby health guides

All content follows our editorial policy and is reviewed against published clinical guidelines.

2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members

Related Resources

Ear Infection TriagePoop Color GuideMilestone ChecklistsBaby Tracker

Bottom line

Most cases of toddler not potty trained by age 3 are normal. Talk to your pediatrician if your child has sudden loss of bladder or bowel control along with neurological symptoms like leg weakness or gait changes.

Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.

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Potty Training Refusal

Potty training refusal is one of the most common challenges parents face with toddlers. Many children simply are not ready when parents expect them to be, and pushing too hard often makes the resistance worse. The average age for potty training readiness is between 2 and 3 years, but some children are not truly ready until closer to 3.5 or even 4. Backing off, reducing pressure, and waiting for signs of readiness is usually the most effective strategy.

Potty Training Regression

Potty training regression is extremely common and almost never a cause for medical concern. Many children who were reliably using the toilet start having accidents again during times of stress, change, illness, or developmental leaps. This is a temporary setback, not a failure. With patience and a calm, supportive approach, most children return to their previous potty skills within a few weeks.

Toddler Afraid of the Potty

Fear of the potty or toilet is very common in toddlers and is a normal part of development. The toilet can genuinely seem scary to a small child - it is loud, it has a big hole, and things disappear into it. Some children are afraid of falling in, others are afraid of the flushing sound, and some are worried about losing a part of themselves. With patience, gradual exposure, and zero pressure, most children overcome potty fears completely.

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