How old should you be to babysit?

It all depends on what the parents think and if the parents trust you with their kids you can babysit.

The age 11 is good because that's the age that you can take the babysitter course and get a license. Start out with older children and family members first.

If you are 10 short periods of time and older children would be a good way to start as well.

In addition:

You should also check into the laws in your area. Some places have laws that say you have to be 12 years old before you can babysit.

Baby sitting courses can also be different in different areas and depending on what organization is running the course. In some places you can take the course at 11 but other places say that you have to be older.