Poker Outs Calculator
Convert outs to equity using the Rule of 2 and 4, or exact combinatorics
Poker Outs Calculator
Convert outs to win probability
Cards that complete your draw (0-20)
Common Draws (click to use):
Enter to see if your draw is profitable
Equity Results
Your draw strength
Exact Equity
35.0%
Rule of 4
35.0%
Outs
9
Pot Odds Needed
1.9:1
Common Draw Reference
Quick reference for typical draws
| Draw Type | Outs | Turn Only | Turn+River |
|---|---|---|---|
| Flush Draw | 9 | 18% | 35% |
| Open-Ended Straight Draw | 8 | 16% | 32% |
| Gutshot Straight Draw | 4 | 8% | 16% |
| Two Overcards | 6 | 12% | 24% |
| Flush + Gutshot | 12 | 24% | 44% |
| Flush + Open-Ender | 15 | 30% | 53% |
| Set to Full House/Quads | 7 | 14% | 28% |
| One Pair to Two Pair/Trips | 5 | 10% | 20% |
| Pocket Pair to Set | 2 | 4% | 8% |
Try These Examples
Common poker draw scenarios
How to Count Outs
Step by step guide
Example: Flush Draw on the Flop
- 1. Your hand: A♠ 7♠
- 2. Board: K♠ 9♠ 3♥
- 3. Count spades: You have 4 spades (2 in hand + 2 on board)
- 4. Remaining spades: 13 - 4 = 9 outs
- 5. Turn + River equity: 9 × 4 = ~36%
- 6. Exact: 1 - (38/47 × 37/46) = 35%
Multiply outs × 2 for equity to next card only (e.g., flop to turn). Quick estimate for single-street decisions.
Multiply outs × 4 for equity over two cards (turn + river). Use on the flop when you expect to see both cards.
Quick Answer
TL;DR summary
Poker outs are cards remaining in the deck that complete your drawing hand. Count your outs, then use the Rule of 2 and 4: multiply outs by 2 for turn-only equity, or by 4 for turn+river equity. Example: A flush draw has 9 outs × 4 = ~36% equity to hit by the river. Adjust for blockers and reverse implied odds when opponents may hold your outs.
Key Facts About Poker Outs
Important things to know
- Outs = cards that complete your drawing hand
- Rule of 2: outs × 2 = equity for one street (~2% per out)
- Rule of 4: outs × 4 = equity for two streets (~4% per out)
- Flush draw: 9 outs (13 of suit - 4 you see)
- Open-ended straight draw (OESD): 8 outs
- Gutshot straight draw: 4 outs
- Two overcards: 6 outs
- Combo draws add up: Flush + OESD = ~15 outs
Frequently Asked Questions
Common questions about poker outs
How do I count my outs in poker?
Count the cards that will complete your hand. For a flush draw with 4 cards of a suit showing, there are 9 remaining (13 - 4). For a straight draw, count cards that complete it. An open-ended straight draw has 8 outs; a gutshot has 4 outs.
What is the Rule of 2 and 4?
A quick way to estimate equity: multiply your outs by 2 to get your approximate equity for one card (turn only), or by 4 for two cards (turn and river). This is slightly optimistic for high out counts but accurate enough for most decisions.
Why is exact equity different from the rule of 2/4?
The rule of 2/4 is an approximation. Exact equity uses combinatorics. With 9 outs and 47 cards remaining, turn equity is exactly 9/47 = 19.1%, not 18%. The difference grows with more outs. Use exact calculations for close decisions.
What are discounted outs?
Discounted outs account for the possibility that some of your outs give you the second-best hand. If you have a flush draw but suspect an opponent has a higher flush draw, you should discount some outs. Also discount outs that pair the board when you might lose to a full house.
How do I combine outs from multiple draws?
Add your outs but subtract overlapping cards. A flush draw (9 outs) + open-ended straight draw (8 outs) doesn't give you 17 outs because 2 cards complete both draws. So it's 9 + 8 - 2 = 15 outs.