Fares according to age are as follows:
|Adult||An adult fare applies to persons age 12 and up. However, any 12 year old who is still in elementary school is still considered a child.|
|Child||A child's fare applies to persons age six to eleven (child’s fare is half the adult fare. Figures are rounded up to the nearest 10-yen interval). However, any six year old who is not in elementary school is considered a toddler.|
|Toddler||Over one, but under six years old. Accompanied by an adult or a child, up to two toddlers can ride the train with no fares applied, but a third toddler will be charged a child's fare.
Also, if a toddler is riding alone or with a group of toddlers, they are charged a child’s fare.
|Infant||Free of charge if less than one year old.|
To use the limited express trains of Tokyo Metro, a toddler or infant must have both a child's ticket and a ticket for the express.