Gambling terms, explained straight

Poker

Royal flush poker

A royal flush is the highest possible straight flush: five consecutive cards of the same suit from ten to ace (A-K-Q-J-10 suited). It is the top-ranked hand in standard poker.

Hand pattern
A-K-Q-J-10, all the same suit
Rank
Highest hand in standard poker when no wild cards are used
Number of straight-flush ranks
10, if a royal flush is counted separately6
Games that use it
Texas hold 'em, video poker, Caribbean stud poker, Chinese poker45

Key points

  • A royal flush is an ace-high straight flush; it beats every other hand in standard poker.1
  • The hand consists of the ten, jack, queen, king and ace of the same suit.1
  • In games with wild cards, a five-of-a-kind hand can outrank a royal flush.3
  • The term is sometimes called a royal straight flush or, in non-English contexts, scala reale or Floş Royal.7

Royal flush vs straight flush

The key difference is the top card: a royal flush is always ace-high, while a straight flush can be any rank.
Hand Cards Rank
Royal flushA-K-Q-J-10 suitedHighest
Straight flushAny five consecutive suited cards (e.g., 9-8-7-6-5)Second highest

How a royal flush works

A player must hold or make the top five cards of one suit in sequence from ten through ace. In standard poker hand ranking, it is the highest-ranking straight flush and is usually the highest hand when wild cards are not used.12

Where this term is used

Not the same as

  • Straight flush — a royal flush is the highest possible straight flush, A-K-Q-J-10 suited

Sources

  1. List of poker hands en.wikipedia.org Provides the definition and hand ranking of a royal flush.
  2. Wikipedia:Today's featured list/April 4, 2014 - Wikipedia en.wikipedia.org Confirms that a royal flush is the highest hand when no wild cards are used.
  3. Non-standard poker hand en.wikipedia.org Explains that wild cards can create hands that outrank a royal flush.
  4. Texas hold 'em en.wikipedia.org Confirms that Texas hold 'em uses the royal flush in its hand rankings.
  5. Video poker - Wikipedia en.wikipedia.org Confirms that video poker uses the royal flush in its hand rankings.
  6. Poker Rules - Pagat pagat.com States the number of straight-flush ranks when a royal flush is counted separately.
  7. Regole dei giochi di carte: Il Valore delle Mani di Poker pagat.com Provides non-English terms for royal flush.

Sources are drawn from regulators, universities and published research, and each one is labelled with what it actually is — a preprint is not called a paper. Bookmaker and affiliate pages are never cited here, because a page that sells betting is not a neutral authority on it.