What’s the Best Age to Potty Train?
Once upon a time, babies were potty trained by 18 months. Now, many kids aren’t out of diapers until 3 or even 4. What gives?
The age at which children are potty trained has shifted significantly in the last century, and understanding why can help you decide when to start—and why waiting too long can backfire.
I have found the older the child is, often the harder the process can be.
Culture and social norms can also determine when the right time is to potty train.
A Quick Look at History
Pre-1950s: Parents began training as early as 6 months. Diapers were cloth, washing was labor-intensive, and parents were highly motivated.
1950s–70s: With disposable diapers and Freudian influences, readiness-based approaches took over.
1990s–2000s: Pediatricians like Dr. T. Berry Brazelton popularized child-led methods, encouraging parents to wait until the child showed interest.
Today: The average age of completion is about 3 years, but that varies by family and cultural norms.
Why Later Isn’t Always Easier
Delaying potty training past 3 can mean:
Stronger resistance (hello, autonomy and egocentrism!)
More set-in routines (they’re used to peeing in a diaper)
Daycare or school transitions creating stress
Less motivation to learn something new
Younger toddlers may not be fully ready, but many can learn the process with consistent routine and encouragement.
Signs Your Child Might Be Ready (Usually Between 22–30 Months):
Can stay dry for 2+ hours
Can pull pants up/down
Is aware of peeing/pooping
Shows interest in the potty or bathroom
Follows simple directions
It’s Less About Age, More About Approach
Instead of waiting for "the perfect age," try this:
Look for signs of readiness, not just interest.
Focus on routine over results.
Introduce the potty early in non-pressured ways (even before they’re "ready").
Support, model, and praise—don’t push or compare.
Potty training can also be a two fold process, the first part is around laying the foundation and the second is the actual strategy where you ditch the diapers.
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