About OPTCGTools
An independent, browser-based set of narrow math utilities for ONE PIECE Card Game players.
Less guessing around the useful parts.
OPTCGTools exists to make the small pieces of game math easier to inspect: whether a declared counter pool holds, how an attack sequence taxes it, and how often a deck sees a set of copies. It does not position a generic calculation as card-specific expertise.
The suite deliberately has no card database, account system, deck uploads, or personalized recommendations. That keeps inputs quick, makes the assumptions visible, and avoids collecting player data just to answer a math question.
How the site earns trust
- Rules claims are versioned and linked to the official English Comprehensive Rules.
- Every calculator includes its constraints at the result - not just in a hidden disclaimer.
- Core formulas have fixture tests that can be re-run with the project.
- Website content never claims affiliation with Bandai, Shueisha, or the ONE PIECE Card Game.
Scope
This is a static, global, English-language tool site. It makes no search-volume claims, player-count claims, gameplay advice guarantees, or tournament-ruling promises. For a card interaction, use the current card text and official resources.
Useful even if a search engine never saw it.
The first priority is a fast answer on a phone: a tool, local calculation, readable result, and an honest explanation of what the result cannot know.
Independent fan project
Not affiliated with Bandai, Shueisha, or the ONE PIECE Card Game.
Math, not a database
Bring your own state, card text, and judgment - this site handles the arithmetic.