Gen 2 DV (IV) Calculator
Use this tool for Pokémon Gold, Silver, and Crystal. In Gen 2, values are technically DVs (0–15), often discussed today as Gen 2 IVs.
HP DV Helper (Gen 2 Rule)
HP DV is derived from the low bits of Attack, Defense, Speed, and Special DVs.
How This Gen 2 IV Calculator Works
In Generation 2, a Pokémon’s hidden stat quality is stored as Determinant Values (DVs), each from 0 to 15. Modern players call these IVs, but the mechanical range is smaller in Gen 2. This calculator checks every possible DV and reports which ones could produce your observed stat.
The Gen 2 Stat Formula
Non-HP: Stat = floor(((((Base + DV) * 2) + floor(min(255, ceil(sqrt(StatExp))) / 4)) * Level) / 100) + 5
HP: HP = floor(((((Base + DV) * 2) + floor(min(255, ceil(sqrt(StatExp))) / 4)) * Level) / 100) + Level + 10
Because rounding happens in several places, it’s normal to get more than one possible DV from a single stat reading. That’s why serious breeders and collectors often check multiple stats, or check again after leveling.
Why You Might See Multiple DV Results
- Rounding compression: Two neighboring DVs can collapse to the same final displayed stat.
- Stat Experience effects: Even modest Stat Exp changes can shift final values by one point.
- Level sensitivity: Low and mid levels often provide less DV separation than level 100.
Best Practices for Accurate Gen 2 IV Estimation
- Use a Pokémon with known base stats and exact level.
- Estimate or control Stat Experience where possible.
- Record multiple stats (Attack, Defense, Speed, Special) rather than only one.
- Recheck after a few levels to narrow the DV range.
Important Gen 2 Detail: HP DV Is Not Independent
Unlike other stats, HP DV is derived from the lowest bit of four DVs: Attack, Defense, Speed, and Special. That means you cannot freely assign HP DV in Gen 2. The helper tool above automates this rule:
- Attack low bit contributes 8
- Defense low bit contributes 4
- Speed low bit contributes 2
- Special low bit contributes 1
If all four are odd, HP DV becomes 15. If all are even, HP DV becomes 0.
Example Workflow
- Choose Attack in the calculator.
- Enter the Pokémon’s base Attack, current level, observed Attack, and estimated Stat Exp.
- Calculate possible DVs and note the range.
- Repeat for Defense, Speed, and Special.
- Use the HP DV helper once you have likely values for the four core DVs.
FAQ
Does this work for Gold, Silver, and Crystal?
Yes. This calculator is designed for core Gen 2 stat mechanics.
Why does Special appear as one DV?
Gen 2 keeps a single Special DV input for hidden values, even though gameplay distinguishes Special Attack and Special Defense. The base stats differ, but the hidden DV source is shared.
Can this tool guarantee one exact DV?
Not always from one snapshot. It gives mathematically valid candidates for your input. Extra observations (other stats or levels) are the fastest way to isolate a single answer.