There is no level, you have to trade him. What I did however is used a glitch, in which you these easy steps:
1- Deposit your kadabra in the GTS and ask for something impossible, I usually use a level 9 or under palkia/dialga.
2- Search for a Pokemon that is really easy to find, I use a bidoof or bibarel, then trade for it. (it doesn't have to be easy to find, its just that its easier to trade)
3- After trading take back your Kadabra, and voila! It should evolve after taking him out.
There are other glitches that I use like the cloning glitch (search that one I can't explain it). The GTS is a great place for glitches.
kedabra evolves after you trade it
It doesn't evolve at a level, you have to trade it.
blastoise doesnt evolve.
about level 36
57
at level 42
Kadabra can only evolve into Alakazam when it is traded. You can trade it at any level and it will evolve.
You just need to trade it, then it will evolve.
It doesn't evolve at a level, you have to trade it.
Kadabra can only evolve by trading.
It doesn't evolve in a level-up. A kadabra evolves in a trade.
you have to trade it to evolve.
To get an Alakazam you must first capture an Abra. Starting at level 16 the Abra can evolve into Kadabra. Once you have the Kadabra trade it to and back a friend it will start to evolve into Alakazam.
Kadabra does not evolve via leveling up, it must be traded to evolve it into an Alakazam.
Level it up to level 16, and it will evolve into Kadabra.
trade.
Kadabra learns Psybeam at level 24.
The only way to evolve kadabra is to link trade with someone else