Hands Probability Calculator

This app is a tool that lets you easily calculate the probability of drawing specific cards in your opening hand for a card game.
Simply set the number of cards in your deck, the size of your opening hand, and the conditions for your key cards (essential starters), and the app will accurately compute “What percentage is the chance of getting this hand?”

It’s ideal for checking deck consistency, reducing bricking rates, or adjusting your deck during optimization.
By understanding the numerical basis behind your build, you can create stronger and more reliable decks.

● Recommended for people who want to:

Evaluate deck consistency using numbers

Know the probability of drawing key cards

Adjust card counts to reduce dead or bricked hands

Compare multiple condition patterns

As a tool that supports card-game play and deck building, it’s useful for everyone—from beginners to advanced players.