During which age range is it typical for children to achieve complete toilet training?

Toilet training typically occurs during the age range of 2 to 3 years. During this period, children usually exhibit the necessary physical and psychological readiness to begin toilet training. Many children start to show signs of readiness as they approach this age, such as staying dry for longer periods, expressing interest in using the toilet, or demonstrating discomfort in soiled diapers.

By age 3, most children are able to master the ability to use the toilet independently during the day. However, completion of toilet training, including night-time dryness, may take longer, often extending into the age range of 4 to 5 years for some individuals as their bladder control continues to develop. Early toilet training before 2 years is often less successful as many children are simply not developmentally ready. Thus, the age range of 2 to 3 years is recognized as the time when children typically begin and often complete toilet training.