There are lockers available at Budapest Keleti Railway Station.
If you are looking for lockers at Keleti Palyaudvar, there is definitely an option within the main station.However, if you have large luggage,you should check in advance for luggage storage options.
There are a good number of lockers available right before the International ticket office at Keleti Budapest.
Lockers at Keleti Budapest railway station are available in two sizes where you can put either a backpack or a hand carry luggage. There are no options to put a bigger luggage size at Keleti Budapest.
There are instructions written in English,Hungarian and German next to the lockers at Keleti Budapest about usage of the lockers. The instructions are understandable, however, keep in mind there is no manual operator to assist you.
It is also mentioned about the forbidden items which cannot be put in the lockers.
There are some drawbacks using lockers at Keleti. For example you have to use Hungarian forint, which does not make sense.
As Budapest accepts credit/debit cards everywhere, and we suggest tourists that they can survive without HUF cash if their trip is short and they plan their trip well. But at Keleti lockers, you need Hungarian fortints,and even those should be in coin form.
Additionally, the size of the lockers is quite small,hence a bigger suitcase will not fit.
Therefore, if you have a bigger luggage and want to book in advance at a hotel in a convenient way that covers insurance as well in case of missing luggage, you can check the following locker option near Keleti which is 2 mins walk from the Budapest Railway station.