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Import your deck
Pick one of your saved decks or paste a YDKE code — no account needed for YDKE.
Hand Lab · Free tool
Hand Lab: draw probabilities
Import your deck, set up a precise hand or board, and instantly see your odds of drawing each card still in your Deck.
How to calculate your draw odds in 3 steps
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Build your game state
Put cards in your hand, on the field or in the GY / banished — or draw a random opening hand.
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Read your odds
See the exact odds of drawing every remaining card over your next draws, alone or combined.
Why calculate your draw odds mid-game?
Most deck probability tools stop at the opening hand. But the real question often comes a few turns later: with the cards already in your hand, on the field and in the Graveyard, what are the odds that your next draw is the out you need?
The Hand Lab answers it by removing every card you place from the Deck, then applying the hypergeometric distribution to what is left. Each card gets its exact odds over the next 1 to 20 draws, and you can select several cards — all your board breakers, for example — to get the chance of drawing at least one of them, or all of them.
To measure the overall consistency of your deck before a tournament, pair it with the deck probability calculator and the opening hand simulator, then adjust your ratios in the Yu-Gi-Oh! Deckbuilder.
What can you calculate with the Hand Lab?
- Drawing your out next turn : Put your current hand in and see the odds of drawing a specific hand trap, board breaker or extender on your next draws.
- Going second : Select all your board breakers and set 6 draws to know your chance of opening at least one of them.
- After thinning your Deck : Cards sent from the Deck to the GY or banished by your effects are removed, so the odds match the Deck you really have left.
- Assembling a combo : Select the missing pieces of a combo and switch to "All of them" to get the chance of assembling it within your next draws.
The mathematical formula
Every card you place in your hand, on the field or in the GY leaves the Deck. With N cards left, K copies of a card and n draws, the odds of drawing none of them follow the hypergeometric distribution:
P(0) = C(N−K, n) / C(N, n)
The chance of drawing at least one copy is 1 − P(0). To draw every target card, the tool applies the inclusion-exclusion principle over all the selected cards.
FAQ
Frequently asked questions about draw probabilities
Logged-in players can pick one of their saved decks in one click. Without an account, paste a YDKE code (ydke://…) exported from most deckbuilders such as YGOPRODeck or EDOPro, or the content of a .ydk file. Only the Main Deck is used, since it is the only one you draw from.
Drawing is a random draw without replacement, described by the hypergeometric distribution. With N cards left in the Deck, K copies of a card and n draws, the chance of drawing at least one copy is 1 − C(N−K, n) / C(N, n). The result is exact, not an estimate from random simulations.
Every card you place in your hand, on the field or in the GY / banished leaves the Deck: the Deck gets smaller and fewer copies of the cards you placed are left. The odds of drawing every other card therefore go up slightly, exactly as in a real duel.
"At least one" gives the chance of drawing one or more of the selected cards — ideal for interchangeable outs such as hand traps or board breakers. "All of them" gives the chance of drawing every selected card at least once — ideal to check whether you can assemble a combo that needs several specific pieces.
Yes. The tool is free and works without an account with a YDKE code. Creating an account only lets you import your saved decks directly, without copying any code.
Other available tools
In the same category: Draw odds and Pots
Improve your deck's consistency
Free, no sign-up — open the deckbuilder and adjust your copy counts accordingly.
