Two Pokémon of the same species, at the same level, don’t necessarily have the same stats. Three invisible factors make the difference: IVs, which are innate, EVs, which are gained through training, and Nature. Here is how to understand, measure and optimize them in Black and White, with two calculators.

🧬IVs: innate potential

Each Pokémon receives, when you meet it or when it hatches, a value from 0 to 31 for each of its six stats: these are its IVs (Individual Values). At level 100, each IV point is worth one stat point.