Definition
Decisions Per Hour (DPH) is a metric used by casinos to measure the speed of a game. It represents the total number of completed rounds, hands, or spins that occur within a 60-minute period.
In context
In a blackjack game with a full table of seven players, the DPH might be around 50 to 60 hands per hour. However, if a single player is playing “heads-up” against the dealer, the speed can skyrocket to over 200 DPH because there are no other players to wait on.
Why it matters
For the casino, DPH is the engine of profitability. Since the house has a mathematical edge on every bet, the more decisions that occur per hour, the faster the casino realizes its “Theoretical Win.” For the player, a higher DPH usually means their bankroll will disappear faster, as they are exposing their money to the house edge more frequently.
Related terms
In detail
Decisions Per Hour (DPH) is perhaps the most underrated variable in the gambling equation. Most players obsess over the house edge—whether it’s 1% or 5%—but they rarely consider how the speed of the game acts as a multiplier for that edge. In the eyes of a casino manager, a table is a factory, and DPH is the production rate.
The Math of Speed
The formula for a casino’s expected profit is simple: Expected Loss = Total Amount Wagered × House Edge
The “Total Amount Wagered” is further broken down by speed: Total Wagered = Average Bet × Decisions Per Hour × Time Played
If you are playing a game with a 1% house edge at $10 per hand:
- At 60 DPH, your expected loss is $6 per hour.
- At 200 DPH (heads-up), your expected loss jumps to $20 per hour.
The game hasn’t changed, and the rules haven’t changed, but because the “decisions” are happening faster, the house is extracting money at more than triple the rate. This is why casinos prefer fast dealers and why they use automated shufflers—to eliminate the “dead time” of manual shuffling and get back to the decisions.
Factors That Influence DPH
Several variables dictate how many decisions occur in an hour:
- Number of Players: A full table is the player’s best friend. Every additional player at the table adds time for betting, card dealing, and decision-making (hitting, standing, etc.). This naturally slows the DPH.
- Dealer Proficiency: A veteran dealer can process hands with mechanical precision. A “break-in” dealer might struggle with payouts or card placement, inadvertently lowering the DPH and the table’s hourly earning potential.
- Game Complexity: Roulette has a lower DPH (usually 30–45 spins per hour) because of the time required to clear the layout and pay out complex “inside” bets. Blackjack is much faster, and Mini-Baccarat is one of the fastest games on the floor because players make no tactical decisions once the hand starts.
- Technology: Continuous Shuffle Machines (CSMs) increase DPH by roughly 20% because the dealer never stops to shuffle a shoe. In slots, the “spin” button has replaced the lever specifically to increase the DPH to hundreds or even thousands of “pulls” per hour.
The Player’s Perspective: Slow is Pro
If you are a recreational player looking to make your bankroll last, your goal should be to minimize DPH. Sitting at a crowded table is one of the most effective ways to do this. You get the same “experience” of gambling, the same number of free drinks, and the same atmosphere, but you are losing money at a much slower rate than if you were playing alone.
Conversely, for professional card counters, DPH is a double-edged sword. They want a high DPH when the count is in their favor to maximize their hourly earn, but they want the game to slow down (or they want to leave) when the count is negative.
Management and “Game Pace”
Casino supervisors are trained to monitor game pace. If a dealer is being too social or “chatty” to the point where they are missing hands, they will be told to pick up the pace. From the management side, labor is expensive. A pit with 10 dealers costs a specific amount per hour in wages. If those dealers are only producing 40 DPH instead of the target 60 DPH, the casino is effectively “losing” 33% of its potential productivity.
In the slot department, DPH is controlled through animation speeds. You’ll notice that modern slot machines have very short “win” animations for small prizes. This is intentional. The machine wants you to get back to the “spin” button as quickly as possible. The faster the decision, the faster the math of the house edge can do its work. Understanding DPH allows a player to see through the “fun” of the game and recognize the industrial efficiency of the casino floor.