Outs & Equity Calculator
Calculate your draw equity using the Rule of 2 and 4. Select common draws or enter custom outs for instant equity percentages on the flop and turn.
Select Your Draws
Equity
Equity on Flop (2 cards to come)
Rule of 4 estimate:
Equity on Turn (1 card to come)
Rule of 2 estimate:
Equity Visualized (Flop)
Common Draw Reference
How to Count Outs in Poker
An "out" is any unseen card that will improve your hand to what is likely the best hand. Counting outs accurately is a core poker skill that allows you to calculate your equity and make informed decisions.
The Rule of 2 and 4
The Rule of 2 and 4 is a quick mental shortcut for estimating equity:
- On the flop (2 cards to come): Multiply your outs by 4 for approximate equity.
- On the turn (1 card to come): Multiply your outs by 2 for approximate equity.
This calculator shows both the Rule of 2/4 estimate and the precise mathematical probability, so you can see how close the shortcut is to the real number.
Precise Equity Formula
The precise equity on the flop with n outs is:
Equity = 1 - ((47-n)/47 × (46-n)/46)
On the turn: Equity = n / 46
Important Considerations
Not all outs are "clean" outs. Some cards that improve your hand may also give your opponent an even better hand. For example, if you have a flush draw, one of your outs might give your opponent a full house. Discount your outs based on the board texture and your opponent's likely range.
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