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Pokemon Catch Rate Comparison

Base Gen I rates, from 3 for Mewtwo to 255 for Caterpie. Pick any two.

Visual comparison

Linear scale: bar lengths are directly proportional to value, relative to the largest entry.

Caterpie255 Catch rate
Pidgey255 Catch rate
Weedle255 Catch rate
Pikachu190 Catch rate
Raticate127 Catch rate
Metapod120 Catch rate
Pidgeotto120 Catch rate
Fearow90 Catch rate
Sandslash90 Catch rate
Raichu75 Catch rate
Bulbasaur45 Catch rate
Gyarados45 Catch rate
Eevee45 Catch rate
Mew45 Catch rate
Ditto35 Catch rate
Snorlax25 Catch rate
Articuno3 Catch rate
Mewtwo3 Catch rate

All values

Click any row to load it as Entry A.

NameValueContextSource
Caterpie
Top tier. Full HP Poke Ball catches often.		255 catch rateKanto 010, wormUPC Red Pokedex catch rates: Caterpie 255
Pidgey
Ties Caterpie at 255.		255 catch rateKanto 016, birdUPC Red Pokedex catch rates: Pidgey 255
Weedle
Ties Caterpie at 255.		255 catch rateKanto 013, hairy bugUPC Red Pokedex catch rates: Weedle 255
Pikachu
Needs chip damage first.		190 catch rateKanto 025, mouseDittobase Red Blue Pikachu: catch rate 190; UPC Red 190
Raticate
About half of Caterpie.		127 catch rateKanto 020, evolved ratUPC Red Pokedex catch rates: Raticate 127
Metapod
Ties Pidgeotto at 120.		120 catch rateKanto 011, cocoonUPC Red Pokedex catch rates: Metapod 120
Pidgeotto
Ties Metapod at 120.		120 catch rateKanto 017, evolved birdUPC Red Pokedex catch rates: Pidgeotto 120
Fearow
Ties Sandslash at 90.		90 catch rateKanto 022, beakUPC Red Pokedex catch rates: Fearow 90
Sandslash
Ties Fearow at 90.		90 catch rateKanto 028, mouse spikesUPC Red Pokedex catch rates: Sandslash 90
Raichu
Well below Pikachu 190.		75 catch rateKanto 026, evolved mouseUPC Red Pokedex catch rates: Raichu 75
Bulbasaur
Starter tier. Sleep and low HP help most.		45 catch rateKanto 001, starterUPC Red Pokedex Bulbasaur: starting catch rate 45
Gyarados
Ties Bulbasaur despite size.		45 catch rateKanto 130, atrociousUPC Red Pokedex catch rates: Gyarados 45
Eevee
Ties Bulbasaur at 45.		45 catch rateKanto 133, evolutionUPC Red Pokedex catch rates: Eevee 45
Mew
Ties Bulbasaur at 45 in Red Blue.		45 catch rateKanto 151, mythicalUPC Red Pokedex catch rates: Mew 45
Ditto
Ten below Bulbasaur.		35 catch rateKanto 132, transformUPC Red Pokedex catch rates: Ditto 35
Snorlax
Only two in Kanto. Bring Ultra Balls.		25 catch rateKanto 143, sleepingUPC Red Pokedex catch rates: Snorlax 25
Articuno
Ties Mewtwo at 3. Hardest tier here.		3 catch rateKanto 144, legendary birdUPC Red Pokedex catch rates: Articuno 3
Mewtwo
Most expensive here. About 85 Caterpies of hardness.		3 catch rateKanto 150, geneticDittobase Red Blue Mewtwo: catch rate 3; UPC Red 3
About these numbers: Rates are base Gen I Red and Blue values at full HP with a standard Poke Ball. Status, HP loss and better balls raise real odds through the Gen I formula and are noted instead of rowed as separate numbers.

About this converter

Red and Blue store one catch number per species from 0 to 255. Commons sit at top: caterpie 255, pidgey 255, weedle 255. Mid rates step down through pikachu 190, raticate 127, metapod 120, pidgeotto 120, fearow 90, sandslash 90, raichu 75. Starters and most evolved forms share 45: bulbasaur 45, gyarados 45, eevee 45, mew 45. Rare rows finish low with ditto 35, snorlax 25, articuno 3 and mewtwo 3. That makes mewtwo about 85 times harder to start than caterpie before balls and status. Every value here is the Red base rate.

How to use it

Pick two Pokemon and a unit in the top row. The three boxes below stay linked. Change any box and the other two update. One box holds a count of the first, one holds the matching count of the second, one holds the total in catch rate. Try 1 Mewtwo against Caterpies.

Yellow differs in four rows and stays out of math: partner pikachu 163 instead of 190, kadabra 96 instead of 100, dragonair 27 instead of 45, dragonite 9 instead of 45. Later games change many rows, for example mewtwo to 20 in Legends Z-A, so the table pins Red and Blue only. Real catch chance also needs HP, ball and status through the Gen I formula, which sources list with these bases.

FAQ

What is Pikachu catch rate?

190 in Red and Blue. Partner Pikachu in Yellow uses 163.

What is Mewtwo catch rate?

3 in Red and Blue. Ties Articuno, Zapdos and Moltres at 3.

What is Bulbasaur catch rate?

45. Starters, Eevee, Gyarados and Mew share 45.

Why no Yellow numbers?

Yellow shifts four rows, so the table pins Red and Blue and notes Yellow variants.

Sources

  • UPC Red Pokedex starting catch rates (Bulbasaur 45, Caterpie 255, Weedle 255, Pidgey 255, Pidgeotto 120, Raticate 127, Fearow 90, Pikachu 190, Raichu 75, Sandslash 90, Gyarados 45, Ditto 35, Eevee 45, Snorlax 25, Articuno 3, Mewtwo 3, Mew 45, Metapod 120)
  • Dittobase Red Blue Pokedex (Pikachu catch rate 190, Mewtwo catch rate 3)
  • Bulbapedia List of Pokemon by catch rate and Capture rate Gen I formula (Yellow partner Pikachu 163, Kadabra 96, Dragonair 27, Dragonite 9; Legends Z-A Mewtwo 20)

Last verified: 2026-09-28 · 18 entries

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