Effort values, or EVs, are a way to increase the stats of a Pokémon based on what wild Pokémon it defeats.
Bonus stats acquired due to Effort Values are gained in addition to those gained by increasing level. Effort values ensure that trained Pokémon are stronger than wild Pokémon.
There's a maximum of 252 EVs per stat and 510 EVs total.
Checking a Pokémon's Effort Values
To check your Pokémon's Effort Values, open the Pokémon's Summary and check the green number corresponding to each stat.
Earning Effort Values
Defeating Wild Pokémon
Each wild Pokémon, when defeated, yields between 1 and 3 Effort Values, which can be distributed in any way among the 6 stats and is inherent to the species. Generally, 1st stage Pokémon award 1 EV, 2nd stage Pokémon award 2 EVs and 3rd stage Pokémon award 3 EVs.
Only the Pokémon that is active when a wild Pokémon faints will receive EVs. Pokémon holding Exp Share that are not active at the time the wild Pokémon faints will not receive Effort Values either.
|HP||Caterpie +1||Viridian Forest|
|ATK||Mankey +1, Ekans+1, Paras+1||Route 23, Mt. Moon|
|Def||Metapod +2, Kakuna +2, Sandshrew +1||Viridian Forest|
|S.ATK||Gastly +1,Haunter +2||Lavender Tower|
|S.DEF||Tentacool +1, Tentacruel +2||Any surfing|
|SPEED||Diglett +1, Dugtrio +2, Magikarp +1||Diglett Cave, any fishing|
*Note- the above are simply the easiest way to grind out EVs quickly, and is in no way an exhaustive list of all EV sources.
Using Vitamins is another method to raise EVs, and each will raise a stat's Effort Values by 10. However, there are the following limitations:
- Vitamins cannot raise EVs for a specific stat past 100.
- Vitamins cannot be used on a Pokémon with over 500 total Effort Values.
Lowering Effort Values
The only way to reduce a Pokémon's EVs is to use an EV Reset, which will return all of its Effort Values to 0.
Impact on Stats
EVs boost stats according to the following formula:
At level 100, every 4 Effort Values add up to 1 stat point. This means that Pokémon can get a maximum of 63 bonus points per stat, and 127 total, from EVs.