Potty training: when to start and how to do it calmly

There is no medal for the earliest potty. There is a lot to gain from a calm start, a simple routine and a child who feels in charge.

Updated October 13, 2026 · sources checked October 13, 2026

In short

Most children show bladder and bowel control between 18 and 24 months, and in the US training usually starts between 2 and 3 years (AAP). The NHS says almost all children can learn between 18 months and 2½ years, without waiting for them to ask. Switch to pants in the day, offer the potty at set times, praise efforts, and expect accidents.

When to start

Two respected bodies frame it a little differently, and both views are useful:

	AAP (United States)	NHS (United Kingdom)
Body awareness	signs of bladder and bowel control usually appear between 18 and 24 months	children may or may not tell you when they are wet; both are normal
Usual start	between 2 and 3 years in the US	almost all children can be trained between 18 months and 2½ years
Done by	most children are trained by 4 years	the advice still helps after 2½ years
Wait for readiness signs?	watch for them (list below)	you do not need to wait for signs or for your child to ask

What the research adds. In a study of 378 children followed from 17-19 months until they were trained (Blum et al., Pediatrics, 2003), starting intensive training earlier was linked to finishing a little earlier, but also to a longer training period. Before 27 months, starting intensive training earlier did not bring the finish date forward. Early starts were not linked to constipation or stool withholding. In plain terms: starting young is fine, but expect it to take longer.

Put training on hold, says the AAP, if your family has just moved or is about to, a baby has just arrived or is due, or there is a serious illness, a death or another crisis.

Readiness signs (AAP)

Your child may be ready when they:

stay dry for at least 2 hours, or wake dry from naps;
show they are about to pee or poop: grunting, freezing, squatting;
can follow simple instructions;
can walk to the bathroom and help undress;
dislike wet nappies and want to be changed;
ask to use the potty, or ask for "big-kid" underwear.

Get ready in the weeks before

The NHS suggests small everyday steps:

read potty books together, or use a doll to show how the potty works;
let your child practise sitting on the potty, clothes on at first;
talk about wees and poos as they happen;
change nappies in the bathroom, and let your child flush and wash hands;
give around 30 minutes of nappy-free time after a wee or poo.

What you need: a potty, or a toilet seat insert with a step (the NHS says your child's knees should be higher than their hips when sitting); pants or washable training pants; clothes that pull down easily (joggers, leggings); spare clothes; an absorbent car seat liner.

Check for constipation first. The NHS says children should do soft poos at least every other day. Hard, pebble-like poos or straining can make toileting painful and scary: speak to your health visitor or doctor before stopping nappies.

The 5 steps (NHS)

Tell your child what is happening. Pick a calm period, without other big changes.
Stop nappies during the day, pull-ups included. Pants help your child feel wet and dry. Keep nappies for naps and nights.
Offer the potty at regular times, rather than waiting to be asked: after waking, after meals, before going out, before naps and bed, whenever you pass a toilet when out.
Praise the effort, whether or not anything happens.
Build independence: wiping, flushing, washing hands, pulling pants up and down, choosing pants.

The AAP's tips for a smooth process

Use neutral words for body parts, pee and poop. Avoid "dirty" or "stinky".
Be a role model: let your child see you use the toilet and wash your hands.
Hand over control: talk about your child being "in charge" of their pee and poop.
Make it a routine, for example the potty first thing every morning.
Teach hygiene: girls wipe from front to back; everyone washes hands well.
Respect fears: some children worry about the flush. Letting them flush can help.
Avoid power struggles: begging, pleading, rewarding and punishing keep children from managing their own toileting, says the AAP. Stay calm, and give specific praise ("You used the potty all by yourself!").

Accidents

Accidents happen to almost every child. The NHS advice: do not get angry, clean up together and move on. The AAP suggests involving your child in the clean-up as a calm, predictable consequence, never a punishment.

When you are out, take spare clothes, a travel potty if you have one and a seat liner.

Naps and nights

When your child regularly wakes dry from naps, try pants for naps too (NHS). Offer the potty before sleep and on waking. Night dryness usually comes after day dryness and is not something you can teach, the NHS explains. Many children under 5 still wet the bed. The NHS suggests not waking or carrying your child to the toilet at night as a long-term fix, avoiding caffeinated drinks such as cola or tea, and using waterproof mattress covers.

See a doctor if a child who had been dry at night for more than 6 months starts wetting again, or if bedwetting continues despite home measures (NHS).

Regression

The NHS notes that changes such as starting nursery, moving house or a new baby can affect potty training, and some children need extra support then. What helps:

go back to regular potty times and calm praise;
keep routines as consistent as you can, as the NHS suggests;
avoid shame or punishment: the NHS and the AAP both advise against getting angry over accidents;
talk about the change your child is living through;
check for constipation or pain.

Talk to your pediatrician or health visitor if accidents persist, if peeing seems painful, if your child is constipated, or if you are worried about progress before school. The NHS stresses it is never too late to keep building these skills.

Toilet training and big feelings

Potty training lands right in the age of toddler tantrums and the drive for independence. The less it becomes a battle, the faster it usually goes. Our guide to positive parenting has the tools: choices, routines and specific praise.

Questions parents ask

What is the average age to potty train?

The AAP says training usually begins between 2 and 3 years in the United States and that most children are trained by 4. The NHS says almost all children can be potty trained between 18 months and 2½ years.

Should I use pull-ups during the day?

The NHS method stops all nappies, pull-ups included, during the day so your child notices when they are wet. Keep nappies for naps and nights at first.

How do I handle potty training regression?

Stay calm, go back to regular potty times and praise, and look for a cause such as a new sibling, a move or starting nursery. The AAP suggests pausing training during major family changes, and the NHS says changes like these can affect potty training and that keeping routines consistent helps.

When will my child be dry at night?

Usually after daytime dryness. The NHS says night dryness comes naturally over time and is not something you need to teach. Many children under 5 still wet the bed.

Do rewards and sticker charts help?

Advice differs. The NHS suggests praise, stickers or a reward chart, while the AAP prefers specific praise and advises against treats and punishments. Both agree: never punish accidents.

Sources

AAP HealthyChildren.org — Potty training, how to get the job done checked October 13, 2026
NHS weaning guide — Potty training your child checked October 13, 2026
NHS — Bedwetting in children checked October 13, 2026
Blum NJ, Taubman B, Nemeth N. Relationship between age at initiation of toilet training and duration of training, a prospective study. Pediatrics, 2003 checked October 13, 2026

Mamavela explains; it does not replace your midwife, doctor or pediatrician, who know your situation. If something worries you, call them. In an emergency, call 911 (US), 999 (UK) or 112.