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There is no perfect age to start potty training: readiness matters more than age. Most children show the physical and emotional signs between 18 and 30 months.
Answer eight quick yes/no questions — staying dry for longer, telling you about a wet nappy, interest in the toilet and so on — to get a readiness score and advice on whether to start now or wait.
| Age | 24 months |
| Stays dry for 2 hours or after naps | Yes |
| Tells you when nappy is wet or dirty | Yes |
| Interested in the toilet or underwear | Yes |
| Follows simple two-step instructions | Yes |
| Can pull pants up and down | Yes |
| Poos at fairly regular times | Yes |
| Can sit still for 2–5 minutes | No / not yet |
| Hides or goes somewhere private to poo | No / not yet |
| Potty training readiness | 75% (6 of 8 signs) |
| Verdict | Ready — a good time to start |
| Age | 2 years 0 months |
| Signs still to look for | Can sit still for 2–5 minutes; Goes somewhere private to poo |
| Typical timeline | Most children start between 18 and 30 months; daytime dryness by about 3 years, night-time dryness can take until 5–6 |
75% (6 of 8 signs) — Ready — a good time to start.
Try this example →Most children are ready between 18 months and 3 years; the average start is around 2 to 2½ years.
Daytime training usually takes from a few days to a few months; staying dry at night can take until age 5–6.
On average boys finish a few months later than girls.