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TCG Calc

Probability Calculator & Deck Optimizer for Trading Card Games

Know your odds before you shuffle — built for competitive deck builders.

Yu-Gi-Oh! calculatorYu-Gi-Oh! CalculatorCustom deck calculatorCustom Deck Calculator

TCG Calc helps competitive players build smarter decks for Yu-Gi-Oh! (YGO), Pokémon, and custom trading card games. Set your draw conditions and see exactly how often your deck delivers — opening-hand odds, combo probability, and engine ratios, all powered by real hypergeometric math.

Powerful Tooling

Build your deck, set draw conditions, and see exactly how often your combos come together — no spreadsheets required.

Save & Sync

Sign in to save your decks to the cloud and pick up exactly where you left off on any device.

Learn & Improve

Strategy guides, engine-ratio breakdowns, and practical tips for building a more consistent deck.

See it in action

Yu-Gi-Oh! deck builder showing opening-hand probability and deck consistency results

Join the community

Share decklists, request features, and connect with other competitive players on Discord.

Join the Discord
# Known Issues
  - There are currently no known issues :)

# Patch Notes
Version 1.2.0 — May 24, 2026
  [Added]
   - Playtest: open a full Yu-Gi-Oh field to test your deck and record combos
   - Record a playtest into a structured combo note, saved under Notes → Combos,  [Changed]
   - Renamed the Simulate Hands tab to Playtest
   - Choose how many cards to deal (1–9), remembered per deck

Version 1.1.0 — May 2, 2026
  [Added]
   - Google Account Logins
   - Simulate Hands Feature

Version 1.0.0 — April 22, 2026
  [Added]
   - Added Patch Notes
View full patch notes
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