What level does Clefairy evolve at?

Clefairy evolves into Clefable using a Moon Stone. (Cleffa evolves into Clefairy when leveled up with high friendship.)

Clefairy is #35 in the National Pokedex, and was introduced in the Generation I Pokemon titles (Red, Blue, and Yellow) where it could be found on Mount Moon (or in Red and Blue at the Rocket Game Corner). In Generation VI (X and Y), it is available through some Fairy-type Friend Safaris.

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Do NOT level this up with Rare Candies. All you need to do is to use a Moon Stone on it; it doesn't have to be a specific level.