What I mean is how does the game increase the CP of an evolving pokemon? For instance I have a pidgey (278CP) when I evolved it became a pidgeotto (489CP), but when I leveled up my weedle (140CP) it became kakuna (150CP).

With some pokemon it seems to be doubled, others tripled, and some not at all

  • 2
    Kakuna isn't a terribly strong Pokemon, so that probably accounts for the modest bump. Evolve that Kakuna, though, and I bet you see a pretty large leap in CP.
    – Ellesedil
    Jul 13, 2016 at 18:43
  • 1
    @Ellesedil Frankly OP should consider themself lucky it knows more than Harden. Jul 13, 2016 at 18:45
  • when I evolve the Kakuna I got a 350CP Beedrill. Just kind of sucked because the Pidgeot I got was 840CP. Beedrill didn't even make it into my top 10
    – King Pyrox
    Jul 13, 2016 at 18:54
  • It would have been higher if Weedle had started higher. Start with a 278 Weedle and see what happens :p
    – Ellesedil
    Jul 13, 2016 at 18:55
  • 140 has been the highest I've found and I'm lvl 16
    – King Pyrox
    Jul 13, 2016 at 18:56

1 Answer 1


It's based on the level (the pokemon's progress on the semicircle) and the species. Level doesn't actually change on evolving, so this question is entirely about the species.

Kakuna and Metapod are renowned for being useless stages between weedle/caterpie and beedrill/butterfree. Consequently, a kakuna of any level is going to be fairly weak.

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