Pokemon GO Catch Rate Calculator

The Pokemon GO catch rate calculator gives you the exact probability of catching any Pokemon in a single throw, accounting for every modifier the game applies. Select your target Pokemon, choose your Pokeball type, add a Berry, adjust the current HP percentage, set any status condition, toggle Weather Boost, and pick your type Medal level — the tool above calculates your real catch chance instantly.

Catch rate in Pokemon GO is not a fixed number. It shifts with every modifier you stack. A Mewtwo raid boss with a 2% base catch rate becomes dramatically more catchable when you combine a Golden Razz Berry (x2.5), an Ultra Ball (x2.0), a Gold Psychic Medal (x1.3), and an active Weather Boost (x1.1). The calculator shows you exactly how much each addition helps before you commit your last ball. After securing a catch, use the Pokemon GO IV calculator to check whether its hidden stats are worth powering up, and consult the type chart to confirm which weather conditions boost your target type. For planning the Stardust cost of power-ups, the Stardust calculator is your next step. Use the Pokemon GO catch rate calculator above to know your exact odds before every important throw.

Type any Pokemon name in the search field. The calculator automatically loads its official base catch rate — confirm the Pokemon sprite and name appear in the selector before proceeding.

Select your Pokeball type from the grid (Poke Ball x1.0, Great Ball x1.5, Ultra Ball x2.0), pick a Berry if you are using one, then drag the HP % slider to match the target Pokemon actual HP bar during the encounter.

Set any Status Condition — Asleep or Frozen gives a x2.0 bonus, Paralysed, Burned, or Poisoned gives x1.5. Toggle Weather Boost on if the Pokemon type matches current conditions, and select your type Medal tier for that Pokemon.

Press Calculate Catch Rate. The result card shows your catch probability per throw as a percentage, expected throws to catch, and a difficulty rating from Very Easy to Very Hard — so you know whether to use your best resources or throw freely.

Pokemon GO uses a specific catch rate formula adapted from the main-series games. Understanding how it works is the difference between wasting Golden Razz Berries on easy catches and failing to secure a legendary because you underestimated the odds.

The Core Formula

Based on Bulbapedia documentation, the equation is: P(catch) = 1 minus (1 minus BCR divided by (2 times CPM)) raised to the power of (Ball x Berry x Medal x Status x Weather). Here BCR is the Pokemon base catch rate stored in the game master file, CPM is the CP Multiplier at the Pokemon current encounter level, and the exponent stacks all active multipliers together multiplicatively.

CPM and Encounter Level

The CPM value depends on where the Pokemon is encountered. Standard wild spawns appear at levels 1 to 35, with level 20 (CPM approximately 0.5974) being the most common. Weather-boosted wild Pokemon appear at levels 6 to 35. Raid bosses use a fixed encounter CPM of approximately 0.7903, which is why raid catches are harder than identical wild encounters — the higher CPM shrinks the BCR/(2xCPM) term and reduces the base catch probability before modifiers are applied.

The HP Modifier

Lowering a wild Pokemon HP increases your effective catch rate. At full HP the BCR applies directly. At minimal HP an approximate x1.5 factor is applied to the effective BCR before the main formula runs. Reducing a wild encounter HP is genuine strategy — the HP % slider in the calculator models this precisely. For raid bosses in Pokemon GO, the encounter HP is separate from battle HP, so this modifier works differently in that context.

Base Catch Rates: What They Mean in Practice

Common Pokemon like Pidgey and Rattata have BCRs of 0.56 to 0.80 — near-certain catches with any ball. Mid-tier Pokemon like Eevee sit at around 0.20. The hardest targets are legendaries and pseudo-legendaries: Mewtwo has a BCR of 0.02, Rayquaza 0.02, Garchomp 0.05, and Dragonite 0.05. With those BCRs, stacking every available multiplier is not optional — it is the difference between a 2% and a 35% per-throw probability. Verify your target BCR in the tool above; it loads automatically from game master data.

Common Misconceptions

Many players think throw type (Nice, Great, Excellent) and curveball affect the mathematical catch rate formula described here. They do not modify BCR or the multiplier stack. Instead, Niantic applies their own separate multipliers for throw accuracy that layer on top of the base probability calculated here. The tool gives you your floor probability — a well-timed Excellent curveball throw improves your odds further beyond what the calculator shows. For maximum catch efficiency on legendaries, always combine Golden Razz Berry, Ultra Ball, and your highest applicable type Medal. Explore all available tools at the Pokemon calculators hub, and once you have caught a raid boss check its power potential with the CP calculator. Compare stats against raid meta standards using the stat calculator. Use the catch rate calculator above to verify your modifier stack before every high-value throw.