This tool does all of the math to calculate your likelihood of catching a Pokémon in Scarlet and Violet (the Generation 9 games), including their DLC (The Teal Mask and The Indigo Disk). You can select any Pokémon available in these games and any Poké Ball you wish. Simply fill out the rest of the information and it'll do all of the hard work for you.
Catch mechanics have remained largely unchanged since Sword and Shield. However, Scarlet and Violet removed the difficulty modifier for raids (all Raid Pokémon are a guaranteed catch) and removed the penalty for having a lower-level Pokémon on the field. The DLC added the Catching Charm back into the game. New mechanics include Sandwich Powers, a badge-based obedience penalty, and a Backstrike bonus — though Sandwich Powers and Backstrike do not apply to static encounters. If you find any errors or have any issues, feel free to join our Discord server to let us know!