What Are the Odds of Making a Straight Flush?
Making a straight flush in a hand of Hold'em is about 0.031% by the river — around 1 in 3,178 for any one player who sees all five cards.
The odds
| Measured as | Probability | Odds | Per 100 hands |
|---|---|---|---|
| You make a straight flush by the riverheadline | 0.031% | 1 in 3,178 | 0.03 |
| Someone at a 9-handed table makes one, per deal | 0.256% | 1 in 390 | 0.26 |
| Someone at a 6-max table makes one, per deal | 0.175% | 1 in 572 | 0.17 |
What we measured
This measures the chance a single player makes a straight flush (five consecutive cards of the same suit, royal flush included) using the best five of their two hole cards plus the five community cards by the river. The table figures show how often a straight flush appears anywhere at a 6-max or 9-handed table.
How it was calculated
Monte Carlo with the site's 7-card evaluator (3,000,000 trials), cross-checked against the exact 7-card count of 41,584 straight flushes in C(52,7) hands.
Computed 2026-07-12 using app/lib/poker-eval.js — the same 7-card evaluator behind /tools/odds-calculator. Want to test a specific matchup? Run it through the odds & equity calculator.
Making a straight flush in a hand of Hold'em is about 0.031% by the river — around 1 in 3,178 for any one player who sees all five cards.
https://pokerpro.tools/odds/straight-flushDrop it in your poker chat, home-game thread, or the next bad-beat argument.
Frequently asked questions
What are the odds of a straight flush in Texas Hold'em?+
About 0.031% — roughly 1 in 3,178 — that any one player makes a straight flush by the river once they see all five board cards. That matches the exact 7-card figure of 41,584 straight flushes in 133,784,560 possible hands.
How often does someone at the table make a straight flush?+
At a full 9-handed table a straight flush shows up about 1 in 390 deals; at 6-max, about 1 in 572.
Is a royal flush counted here?+
Yes. A royal flush is the highest straight flush (10-J-Q-K-A suited), so it is included in these figures. Flopping a royal specifically has its own page.