Gambling terms, explained straight

Advantage Play & Game Integrity

Blackjack true count

The true count is the running count divided by the number of decks still in the shoe, giving a deck-independent measure of how favourable the remaining cards are.

Formula (Hi-Lo)
True count = running count ÷ decks remaining12
Typical range
True-count values often stay near ±1 at shoe start or after a single hand4

Key points

  • The true count normalises the running count for the number of decks left, so a count of +6 with three decks remaining gives a true count of +2.12
  • A higher true count signals a deck richer in high cards, guiding bet size and some playing decisions.23
  • Some counting systems use half-deck increments instead of full decks when dividing the running count.2

Where this term is used

Not the same as

Advantage play Hi-lo count blackjack A balanced card-counting system that assigns +1, 0, and -1 to card ranks. Advantage play Blackjack card counting The overall method of tracking cards to gain a statistical edge. Advantage play Shuffle tracking blackjack A technique that follows groups of cards through the shuffle rather than counting. Advantage play Edge sorting blackjack Exploiting manufacturing imperfections to identify card values before they are dealt. Advantage play Hi-lo system blackjack The most widely taught card-counting system, using a simple point-value scale. Advantage play Card counting machine blackjack Devices that automate the counting process, generally prohibited in casinos.

Sources

  1. Card counting en.wikipedia.org Provides the standard definition and formula for true count in blackjack card counting.
  2. Card Counting in Blackjack - Introduction & Basics wizardofodds.com Explains the true count formula and how it is used for betting and playing decisions.
  3. Introduction to the High-Low Card Counting Strategy wizardofodds.com Covers the Hi-Lo system and the role of true count in strategy adjustments.
  4. Ask The Wizard #48 wizardofodds.com Gives a typical range for true-count values early in a shoe.

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.

Written and maintained by Ellis Warrender, writer and maintainer.

Last updated 28 July 2026. Spotted an error? Tell me and it gets fixed and logged on the corrections page.