Pokémon GO IV Calculator: How to Check a Pokémon

Updated 5 November 2026 · Standard formula, shown below

A Pokémon GO IV calculator estimates a Pokémon’s Attack, Defense, and HP individual values from its appraisal and in-game details. Enter or inspect its CP, HP, level-related details, and appraisal information in a calculator to see the possible IV combinations; the game’s Appraise feature is the simplest way to check without an external tool.

What an IV Calculator Shows

IV means individual values: three hidden numbers that add to a Pokémon’s base stats. In Pokémon GO, each IV ranges from 0 to 15. Attack, Defense, and HP are separate, so a Pokémon can have high Attack but lower Defense or HP. A calculator combines the visible information about a particular Pokémon to identify which IV combinations could produce those displayed values.

Results are commonly written as three numbers, such as 15/14/13, in Attack/Defense/HP order. Their sum is sometimes expressed as a percentage: 42 out of a possible 45 is about 93.3%. That percentage is a convenient summary, not a separate in-game stat. It also does not account for every factor that matters in a battle, such as moves, typing, or the opponent.

Because CP and HP are rounded display values, a calculator may return several possible combinations rather than one certain answer. An appraisal narrows the possibilities. Powering up the Pokémon can also change the visible information and help distinguish candidates.

How Pokémon GO Appraisal Works

The in-game Appraise function provides direct information about IVs. Open the Pokémon’s details, use the menu, and choose Appraise. The appraisal screen shows a three-part stat graphic and a star rating. The graphic indicates the ranges for Attack, Defense, and HP; the exact fill level helps you identify each value.

The overall rating is a quick summary of the combined IV total. It does not mean that every stat has the same value. Two Pokémon with the same star rating can have different stat distributions, so check the individual bars when the exact numbers matter. Appraisal is also useful input for a calculator when a bar is not visually clear.

For a basic check, start with the game’s appraisal rather than transferring information into a third-party service. A calculator is most useful when you want to resolve ambiguity, compare candidates, or understand how different IV combinations fit the displayed CP and HP.

How to Use a Calculator

Select the exact Pokémon species. Base stats differ between species, so choosing the wrong one makes the result unreliable.
Record its displayed CP and HP, and enter any other details the calculator requests, such as its current level or power-up cost if shown.
Open Appraise and note the Attack, Defense, and HP bars or the ranges indicated by the appraisal.
Enter the values carefully, using the units and labels shown by the calculator. Some tools ask for the Pokémon’s level; others infer possible levels from CP and other details.
Review the candidate IV combinations. If more than one is listed, compare them with the appraisal and any additional details the tool requests before treating one as certain.

Not every calculator uses the same inputs or presentation. Some show a range of possible IVs, while others show a percentage or a list of candidates. Read the tool’s instructions and avoid assuming that a single displayed percentage tells the whole story.

What IVs Do—and Do Not—Tell You

IVs contribute to a Pokémon’s stats, but they are only one part of its performance. The species’ base stats, its level, and its moves also matter. Type effectiveness and battle rules can matter substantially in a particular matchup. Consequently, a Pokémon with perfect IVs is not automatically the strongest choice for every raid, PvP league, or other situation.

For example, a 15/15/15 Pokémon has the maximum possible IVs, but a different Pokémon with a more useful species, moveset, or role may perform better for a given task. In some PvP leagues, lower Attack IVs can be desirable because of how CP limits interact with stats and leveling. The best IV spread therefore depends on how you plan to use the Pokémon, not just its total percentage.

IVs are also different from moves and from a Pokémon’s appraisal stars. Moves can be changed through available in-game items or features, whereas IVs are individual attributes of that Pokémon. The stars summarize the IV total; they do not describe its moves or guarantee battle performance.

Choosing a Calculator and Avoiding Mistakes

Choose a tool that explains its inputs and makes uncertainty visible. A result should be consistent with the game’s CP, HP, and appraisal information. If it claims certainty from incomplete details, treat that conclusion cautiously: several combinations can produce the same rounded values.

Check the species: A species selection error changes the underlying stat assumptions.
Use current details: Enter the Pokémon’s present CP and HP, not values from before powering it up or evolving it.
Read the stat order: Confirm whether the result lists Attack, Defense, then HP; do not assume every tool formats it the same way.
Do not confuse IVs with level: IVs are added to base stats, while level affects the Pokémon’s overall stat values. They are related in the CP calculation but are not interchangeable.
Be cautious with access: A calculator generally needs only relevant Pokémon details. Avoid tools that request account passwords or unrelated account permissions.

External tools can be convenient, but manual entry can introduce errors. Recheck every number against the game, especially if a candidate seems inconsistent with the appraisal. For privacy and account safety, prefer tools that do not ask you to sign in or provide credentials.

Common Misconceptions and Limits

A “100% IV” Pokémon means all three IVs are 15; it does not mean the Pokémon has maximum level, the best possible moves, or guaranteed wins. Likewise, a lower percentage is not automatically useless. The practical difference between two IV spreads may be small in a given situation, and other battle factors may outweigh it.

Calculators estimate from available information; they do not improve IVs or reveal information that the inputs cannot distinguish. Display rounding is a key limitation. If multiple candidates remain, adding a correct appraisal reading or another requested in-game value may narrow the result. Do not change or power up a Pokémon solely to chase a tiny difference without considering the resources involved and the Pokémon’s intended role.

Frequently Asked Questions

How do I check IVs in Pokémon GO?
Open the Pokémon’s details and use the Appraise option in its menu. The appraisal shows its Attack, Defense, and HP ratings and an overall star summary.

Can a Pokémon GO IV calculator give an exact answer?
Sometimes, but not always. Rounded CP and HP values can fit multiple IV combinations. Appraisal information and any additional inputs requested by the calculator help narrow the possibilities.

What is a perfect IV Pokémon?
It has 15 Attack, 15 Defense, and 15 HP IVs, often written as 15/15/15. This describes its IVs, not its level, moves, or overall suitability for every battle.

Is a 0% Pokémon rare?
A 0% Pokémon has 0/0/0 IVs. Its rarity depends on the circumstances in which it was obtained, and it can be interesting to collect, but low IVs do not make it stronger in standard stat terms.

Are higher IVs always better for PvP?
No. The preferred spread depends on the league and its CP limit. A Pokémon with lower Attack IVs may reach a higher level before hitting a CP cap, so compare candidates for the specific league rather than relying only on the total percentage.

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.