Yes, but only after you get the national pokedex.
blisey
Chansey doesn't evolve by level. You have to love her so much, you have to let her like you so much, by letting her always fight, caring about her health. And she can evolve to blisey! ♥Starbucks Princess♥
First you need a chansey which firered and leafgreen can get then to evolve chansey it needs max friendship with its trainer it will then evolve to blissey.
To get chansey to evolve I'm pretty sure you have to like get high friend ship buy giving your chansey proteins.carbos,etc. Also you need the National Pokedex.
The first thing you should do is give it stuff like protein, iron, zinc, carbos, calcium, hp up, pp up and then train it and eventually it will evolve also have it hold soothe bell.
What the previous guy meant to say is that Chansey evolves into Blissey with high happiness after you have gained the National Pokedex.
I leveled up chansey to level 37 and forgot to give it a carbos one level before and it did not evolve.
You have to level it up when it likes you a lot.
for hapinny to evolve into a chansey
A snorlax or a wiglytuff would be great...if u want an amazing tank though try catching a chancey from the safari zone then evolve it to blisey....blisey has the highest HP in the whole pokemon generations
chansey does not evolve by level. it evolves by happiness. i hope this helped!
One needs to increase Chansey's happiness to its maximum.