Definition
Spins Per Hour (SPH) is a metric used to measure the speed of a game, specifically how many rounds or spins are completed in a 60-minute period. In the casino business, speed is directly linked to profitability, as the house edge is realized more quickly when more rounds are played.
In context
A casino manager notices that a specific roulette dealer is only averaging 25 spins per hour because they are slow at clearing the layout. The manager provides additional training to get the dealer up to 35 spins per hour, effectively increasing the table’s “theoretical win” by 40% without changing the bets.
Why it matters
For the casino, more spins per hour means more revenue. For the player, spins per hour determines how fast their bankroll is exposed to the house edge. A “slow” game is generally better for a player’s longevity, while a “fast” game is better for the casino’s bottom line.
Related terms
In detail
In the world of casino operations, time is not just money—time is the multiplier for the house edge. Every game in the casino has a mathematical advantage for the house, but that advantage is only a percentage. To turn that percentage into actual dollars, the casino needs volume. Spins Per Hour (SPH) is the primary measure of that volume.
The Engine of Theoretical Win
To calculate how much a table or machine is “worth,” a casino uses the formula: Average Bet x Hours Played x Spins Per Hour x House Edge = Theoretical Win.
If you change any one of those numbers, the profit changes. Since the casino can’t easily force players to bet more, and they can’t change the math of the game (the house edge) without regulatory approval, the only variable they can control is the speed. If a blackjack dealer can go from 60 hands per hour to 80 hands per hour, the casino has just increased its revenue by 33% from that table without any extra cost.
Factors That Influence SPH
Several factors can slow down or speed up a game:
- The Dealer: An experienced dealer is “fluid.” They pay out bets while simultaneously preparing for the next spin. A “clunky” dealer who has to stop and think about every payout kills the SPH.
- The Players: A table full of beginners who don’t know when to hit or how to place bets will naturally be slower. Conversely, a table of “regulars” moves like a machine.
- Side Bets: Games like “Blazing 7s” or “Lucky Ladies” add complexity. If a dealer has to stop and verify a complex side-bet payout every few hands, the SPH drops.
- Technology: This is the biggest driver of SPH in the modern era. Automatic shufflers in blackjack allow one deck to be played while another is shuffled, eliminating the “dead time” of manual shuffling. In roulette, “Rapid Roulette” or “Auto-Roulette” terminals can reach 60-80 spins per hour because there is no physical clearing of chips from a table.
The Player’s Perspective: The “Burn” Rate
Players often don’t realize that the speed of the game is their biggest enemy. If you are playing a slot machine that spins 600 times per hour, you are exposing your bankroll to the house edge 10 times every minute. This is why slot machines are so profitable—not just because the house edge is higher than table games, but because the SPH is astronomical compared to a slow-moving craps game.
If you are a recreational player looking to make your $100 last all night, your best strategy is to find a slow game. A packed craps table where the “stickman” takes a long time to set the dice and players take forever to place bets is a “cheap” game to play, even if the house edge is the same as a fast game. You are simply giving the casino fewer opportunities to take your money.
Operational Management and Staffing
Casino Shift Managers use SPH to evaluate staff. If a dealer is consistently below the floor average for SPH, they are costing the casino money. However, there is a “sweet spot.” If a dealer moves too fast, they are more likely to make payout errors or miss “short-pays” and “over-pays.” They might also make the players feel rushed, which can lead to players leaving the table.
Good management balances speed with “game protection” and “hospitality.” A dealer who is fast but makes the players feel like they are on an assembly line is often less valuable than a slightly slower dealer who keeps the players happy and betting.
The Machine Advantage
This is where slots and Electronic Table Games (ETGs) dominate. A physical roulette wheel has a physical limit to how fast it can be spun, cleared, and re-spun. An ETG has no such limit. It can spin the moment the “No More Bets” timer hits zero. For the casino, moving players from live tables to ETGs is a massive win in SPH, often doubling or tripling the number of decisions per hour.
When you see a casino replacing live tables with machines, they aren’t just saving on labor costs; they are increasing the “velocity” of the math. They are making the house edge hit you faster and more often.