Expected Loss Calculator

Last updated: 2026-07-14

Calculate your expected gambling loss per session with confidence intervals. Compare casino costs to movies, dining, and concerts.

Expected Cost
$44.80
You'd expect to lose about $44.80 over 4 hours — that's about 3.0 movie tickets.
Cost / Hour
$11.20
house keeps 0.6% (edge)
Win Probability
46.3%
Hands Played
280
70/hr
Time to Lose $100
8.9 hrs

What Does Gambling Actually Cost Per Hour?

Every casino game has a mathematical cost measured by the house edge. This calculator converts abstract percentages into concrete dollar amounts for your specific bet size and session length, complete with confidence intervals showing the realistic range of outcomes.

How Confidence Intervals Change Your Perspective

Expected loss is an average, not a guarantee. In a 4-hour blackjack session, your actual outcome falls within the 68% confidence interval roughly two-thirds of the time. The 95% range covers nearly every realistic scenario, from lucky sessions to unlucky ones.

Comparing Gambling to Other Entertainment

Framing gambling as entertainment with a quantifiable cost helps set appropriate budgets. A $25 blackjack player at a good table loses less per hour than a movie ticket costs. A $100 slot player can burn through hundreds per hour. The entertainment comparison puts these numbers in context.

Frequently Asked Questions

How is expected loss calculated?
Expected loss equals your bet size multiplied by the house edge multiplied by the number of hands played. For example, $25 bets at blackjack (0.5% edge) for 4 hours at 70 hands/hour equals $25 × 0.005 × 280 = $35 expected loss.
What does "expected" loss mean — will I always lose that amount?
Expected loss is the mathematical average over thousands of sessions. In any single session, standard deviation means you could win significantly or lose much more. The confidence intervals show likely outcome ranges.
Which casino game has the lowest cost per hour?
Blackjack with basic strategy (0.5% edge at $25/hand) costs roughly $8.75/hour. Video poker with optimal play can be even cheaper. Slots at $1/spin with 500 spins/hour and 6% edge costs $30/hour.
How does bet size affect expected loss?
Expected loss scales linearly with bet size. Doubling your bet doubles your expected loss per hour. A $50 blackjack player loses twice as much per hour as a $25 player at the same table.
What are confidence intervals in gambling?
The 68% interval shows the range your result will fall within about two-thirds of the time. The 95% interval covers nearly all realistic outcomes. These intervals are calculated using the game's standard deviation.
Is gambling more expensive than other entertainment?
It depends on the game and bet size. A $10 blackjack player loses about $3.50/hour, cheaper than a movie. A $100 slot player at 10% house edge loses $5,000/hour, far exceeding any entertainment cost.
How do I reduce my expected loss?
Play games with lower house edges, reduce bet size, or shorten sessions. Blackjack with basic strategy, craps with odds bets, and full-pay video poker offer the lowest expected losses per dollar wagered.
What is standard deviation in casino games?
Standard deviation measures how much your actual results vary from the expected outcome. Higher standard deviation means more volatile sessions — bigger wins and bigger losses relative to expectation.

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