Gen I training · Stat Exp tool
Do Pokemon gain EVs in Pokemon Yellow?
No modern EVs—Yellow uses Stat Experience. A KO starts with the defeated mon’s base stats, then divides each yield by the number of Pokemon receiving experience (including EXP All recipients) before adding the truncated result to each pool. Pools cap at 65535; vitamins add +2560 early.
Fast answer
Stat Exp, not Effort Values
English Pokémon Yellow stores five Stat Exp pools. For each KO, the game divides the defeated species’ base HP / Attack / Defense / Speed / Special by the number of experience recipients, truncates, then adds that share to each recipient. The printed-stat term caps the square-root counter at 255, so its maximum is 63.
Interactive tool
Stat Exp farm planner
Pick a pool, set current Stat Exp (or import goals from Save Import later), choose a yield mon, and see remaining KOs. Values stay in this browser only.
KOs needed: —
After vitamins: —
Stat formula bonus from goal Stat Exp: —
Bonus uses floor(min(255, ceil(√stat_exp))/4), so max Stat Exp contributes 63. Final stats also need level, base, and DV.
pret/pokeyellow base stats
Top Stat Exp yields by pool
One KO awards these base values into the matching pool. Availability still depends on wild tables, gifts, trades, and story progress—use the Pokédex and Catch Planner for where to fight them.
Full yield index
All 151 species · Stat Exp per KO
| # | Pokémon | HP | Atk | Def | Spe | Spc | Pokédex |
|---|
Items · early power
Vitamins: +2560 until 25600
Each vitamin targets one pool. After that pool hits 25600 Stat Exp, further vitamins do nothing for that stat—burn them early on keepers. Map pins open the interactive map.
Rare Candies raise level, not Stat Exp. Candy locations: Items · Rare Candy. For late-game grinding routes, see Level 100 team.
How the numbers land
Stat formula (Yellow / Gen I)
Non-HP stats
floor(((Base + DV) × 2 + floor(min(255, ceil(√StatExp))/4)) × Level / 100) + 5
- Attack, Defense, Speed, Special use this shape.
- DV is 0–15; HP DV is derived from the other four.
- Badge boosts can multiply battle stats—see the badge page.
HP
floor(((Base + DV) × 2 + floor(min(255, ceil(√StatExp))/4)) × Level / 100) + Level + 10
- Chansey’s huge base HP makes it the classic HP Stat Exp punch.
- HP Up is the matching vitamin.
- Import a save to avoid guessing current Stat Exp.
Why people say “EVs”
Modern games use Effort Values with per-stat and total caps. Yellow’s Stat Exp is the ancestor idea—same “defeat mons to grow stats” fantasy—but the numbers, caps, and vitamins differ. Don’t port a Smogon 252/252 spread into Yellow math.
DV / IV calculator path
Searchers looking for a “DV IV calculator” want reverse stats or perfect-training checks. Use Calculators with known level and measured stats, or read DVs straight from a battery save in the browser.
Training checklist
Before you grind for hours
FAQ
Stat Exp questions
Do Pokémon gain EVs in Yellow?
They gain Stat Experience, the Gen I system. It is related in spirit to modern EVs but not the same numbers or caps.
Does the defeated mon’s level matter for Stat Exp?
No for the Stat Exp award—the yield is the species’ base stats, not its level. Level still matters for battle EXP and for your own mon’s printed stats.
Do trainer battles give Stat Exp?
Yes. Any Pokémon you defeat awards Stat Exp from its species base stats, including trainers—handy when a gym team is packed with the pool you want.
How do I see my current Stat Exp?
The game never shows the raw number. Import a 32 KiB English Yellow save in Save Import, or reverse from known stats in Calculators.
Is there a DV / IV calculator for Yellow?
Yes—use the site calculators for DV + Stat Exp rebuilds. “IVs” in modern wording map closest to Gen I DVs (0–15).
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