How are PvP IV ranks calculated in Pokémon GO?

For each of the 4,096 IV spreads, take the highest level that keeps the Pokémon under the league's CP cap, multiply Attack × Defense × HP at that level, and rank the products. Rank 1 is the spread with the highest stat product.

Why are low Attack IVs better in Great League?

The CP formula weights Attack more than Defense and HP, so a lower Attack IV lets the Pokémon reach a higher level under 1,500 CP. The extra levels raise all three stats, which gives a higher stat product.

What IV floor do traded and raid Pokémon have?

Trades roll at least 1/1/1 for Good Friends, 2/2/2 for Great, 3/3/3 for Ultra and 5/5/5 for Best Friends, and a lucky trade gives at least 12/12/12. Raid, egg and research Pokémon are at least 10/10/10.

Does level 51 change PvP ranks?

Only for Pokémon that can't reach the CP cap by level 50. Best Buddy adds one level, so turn on the level 51 option if your Pokémon is a Best Buddy.

Home/Pokémon GO/PvP IV rank checker

Pokémon GO PvP IV Rank Checker.

Check where any IV spread ranks in Great League, Ultra League, Little Cup and Master League, and see the best spreads to trade or raid for.

stat product = Atk × Def × HP
at the highest level under the CP cap

Pokémon

IVs (Atk / Def / HP)

League

Max level

IV floor

Azumarillwaterfairy

atk 112 · def 152 · sta 225

Great League rank · 4/15/14

#443

4/15/14 Azumarill ranks #443 of 4,096 at level 42.5 and 1,493 CP, with 97.3% of the best stat product. Rank 1 is 0/15/15 at level 45.5.

Level42.5

CP1,493

Stat product2,384,662

Of rank 197.26%

Attack93.13

Defense134.07

HP191

4/15/14 Azumarill in every league

Best Azumarill IVs for Great League

all 4,096 spreads

RankIVsLevelCPAttackDefenseHPOf #1

Why low Attack wins under a CP cap

Great League caps CP at 1,500 and Ultra League at 2,500, and the CP formula weights Attack more heavily than Defense and HP. A Pokémon with low Attack IVs can therefore power up to a higher level before it hits the cap, and the extra levels raise all three stats. Ranks here use the stat product, Attack × Defense × HP at the highest level that fits, which is the measure PvP players mean by "rank 1".

The IV floor matters when you're deciding what to trade for. A lucky trade can't go below 12/12/12, and raid, egg and research Pokémon can't go below 10/10/10, so their best possible rank is often far from the overall rank 1. Pick the floor that matches where your Pokémon came from and the ranking only counts spreads it could actually have.

Stat product is not the whole picture. Some matchups turn on a single point of Attack or Defense (a breakpoint or a bulkpoint), so two spreads a few ranks apart can win different mirror matches. Master League has no cap, so there the best spread is simply 15/15/15 at the highest level you can reach.