You Do Need power plug adapter while traveling from Hungary to Czech Republic.

Here is Why You Need An Adapter

The outlet and plug type used in Czech Republic are C and E and in Hungary are C and F. This is how they look like.

In Hungary, outlets of type C and F are in use.

Type C

Type F

In Czech Republic, outlets of type C and E are in use.

Type C

Type E

I am from

going to