Although not the best possible hand, the straight flush marks a potential sway in the pot if used correctly. This is precisely why every poker player must understand how to make a straight flush and what the intrinsic odds of doing that are.
For a quick breakdown of the straight flush, consult this dedicated blog post about what is a straight flush poker hand.
Should you need a complete breakdown of all the poker hands out there, check out this dedicated blog post with all poker hands explained.
That said, in this post, we’ll be establishing what the straight flush represents for every poker player out there. We’ll also dig into the mathematics to discover different ways to make a royal flush to help you better understand how grandiose this hand truly is!
HOW TO CALCULATE THE PROBABILITY OF HITTING STRAIGHT FLUSH ON THE POKER TABLE?
A straight flush in poker is a five-card hand consisting of five sequential cards of the same suit. In essence, it’s a combination of a straight (five sequential cards) and a flush (five cards of the same suit).
Here’s a general guide to calculating the odds to make a straight flush:
- Identify the Required Cards: A straight flush hand consists of five consecutive cards of the same suit.
- Determine the Number of Ways to Achieve a Straight Flush: Count the total number of possible sequences of this five-card poker hand. Let’s save you the counting; this value is 40.
- Calculate Total Possible Combinations: Determine the number of possible five-card combinations from a standard deck. A standard deck of cards includes 52 different playing cards.
- Apply the Probability Formula: Use the probability formula: Probability = (Number of Favourable Outcomes) / (Total Number of Possible Outcomes).
- Plug in the Numbers: Insert the number of ways to make a royal flush as the favourable outcome. Then, insert the total possible five-card combinations as the total number of outcomes.
- Simplify the Fraction: Simplify the fraction to obtain the probability as a decimal or percentage.
Figuring out the chances of getting a straight flush involves using some tricky math with combinations and permutations. The numbers given are based on common scenarios and may not cover special rules like wild cards. Also, the actual probability can change based on things like how many people are playing and how many cards are out. So, these calculations give you a general idea, but the real odds might be a bit different depending on the specific details of the poker table you’re trying.
STRAIGHT FLUSH ODDS IN TEXAS HOLD’EM POKER GAME
Before diving into the odds of making a straight flush, let’s have a brief look at how the game of Texas hold’em unfolds.
In Texas hold’em, each player gets two hole cards, and five community cards are placed face-up on the table. In this poker variant, players aim to create a straight flush by having five cards in sequential order, like 5, 6, 7, 8, and 9 of spades — the cards cannot be of different suits.
The odds of making a straight flush in poker depends on the variant you are playing. If you are playing Seven Card Stud, for example, the significance of seven total cards in play will greatly affect the odds compared to, for example, Texas hold’em.
STRAIGHT FLUSH POKER PROBABILITY PRE-FLOP
Seeing as drawing a straight flush depends on community cards, it isn’t possible to draw a straight flush pre-flop.
A straight flush requires five community cards, including the flop, turn, and river, in addition to the player’s two cards. This means that poker players must pass through these rounds before having a chance of making straight flush poker hands.
STRAIGHT FLUSH ODDS ON THE FLOP
Naturally, the probability of earning straight flushes also changes with each stage. Let’s look at the different ways of getting a five-card royal flush with the same hand during Texas hold’em.
The odds of flopping a straight flush in Texas hold’em are approximately 0.02%, or 1 in 4,165.
ODDS FOR STRAIGHT FLUSH HANDS ON THE TURN OR RIVER
The odds of hitting a straight flush on the turn in Texas hold’em are roughly 0.21%, or 1 in 472.
As for the river, the odds of making a straight flush at this stage of the game in Texas hold’em are approximately 0.24%, or 1 in 416.
These poor odds are exactly why straight flushes rank so high on the standard poker hand rankings, just behind royal flushes. More on that below!
COMPARISON OF STRAIGHT FLUSHES ODDS AND ROYAL FLUSHES ODDS
Royal flushes and straights (flushes) are sometimes confused in the world of poker. Although these are the strongest hands in the game, they are very distinct hands. Compared to other hands, they are the hardest to get, but definitely not impossible.
Stage | Royal Flush Odds | Straight Flush Odds |
Flop | 0.08% | 0.27% |
Turn | 0.20% | 0.54% |
River | 0.30% | 0.81% |
When we compare the odds of straight flushes to royal flushes in poker, it’s like weighing the chances of two extraordinary events. A straight flush, where you get five sequential cards of the same suit, is more likely to happen compared to the ultra-rare royal flush, which is the highest-ranking hand in poker. The difference lies in the specific cards needed. If you’d like to read more about the odds of a royal flush, you can do so by visiting our dedicated article about the royal flush odds.
STRAIGHT FLUSH OR ROYAL FLUSH – WHAT IS THE PROBABILITY?
In poker, landing a straight flush or a royal flush is like hitting a jackpot, but they come with different probabilities. A straight flush is a hand with five consecutive cards of the same suit, like 7, 8, 9, 10, and jack of spades.
The odds of getting a straight flush are higher compared to a royal flush. A royal flush is the ultimate hand, consisting of the 10, jack, queen, king, and ace of the same suit. Since a royal flush is a specific type of straight flush, it’s rarer and more challenging to get.
While the probability of a straight flush depends on the specific cards and stage of the game, a royal flush has lower odds due to its unique card combination. So, in poker, the excitement lies in chasing these extraordinary hands, with the royal flush standing as the pinnacle of card combinations.
If you want to read more about the royal flush, have a look at our dedicated blog about the royal flush hand.
IMPLIED ODDS FOR STRAIGHT FLUSH POKER HAND
Implied odds for a straight flush poker hand involve considering potential future gains when deciding whether to continue with a hand. It goes beyond just the current pot odds and factors in the likely winnings from opponents if the desired cards are drawn in subsequent rounds.
For instance, let’s say you have a draw to a straight flush, and although the current pot odds may not justify calling, the implied odds take into account the additional chips you could win if you complete your hand and your opponents continue betting.
Remember that straight flush beats every other poker hand, excluding royal flush hands. A royal flush beats every other hand; it can only tied by another royal flush. Seeing as it can be counted on to win almost all the time, this is what makes the royal flush the best hand in the game.