WHIRLWIND EXPLANATION: Pokémon have a fixed, permanent score from 0 to 31 for each stat that affects how good that stat can ever get.

This calculator will figure out that score (called a "gene" or, more obtusely, an "IV") for you, so you can discard the unworthy. It's more accurate for higher-level Pokémon, so it's helpful to go into a level 100 wifi battle with someone and check your Pokémon's stats from there.

Stat calculator

Weepinbell
Weepinbell 		Base
stats		 Stats Effort Stats Effort Stats Effort Stats Effort Stats Effort Stats Effort Stats Effort Possible genes (IVs)
Level Level Level Level Level Level Level
HP 65
60–67
62–70
65–72
67–75
69–77
72–80
74–83
23
Attack 90
44–51
46–53
48–55
50–57
51–59
53–61
55–64
6
Defense 50
27–33
28–35
29–36
30–37
31–39
32–40
33–41
22
Special Attack 85
42–49
44–51
45–53
47–55
49–57
50–59
52–61
22
Special Defense 45
24–31
25–32
26–34
27–35
28–36
29–37
30–38
18
Speed 55
29–36
30–37
31–38
32–40
33–41
34–43
35–44
18

Congratulations, you've narrowed your Pokémon's stats down exactly!

This Weepinbell's Hidden Power inflicts Fighting damage, with 70 power.

And for your copy/pasting pleasure:

23 HP; 6/22 Physical; 22/18 Special; 18 Speed

or start over