Keno Odds Calculator: Know Your Real Chances

Keno offers the allure of big payouts from small bets, but the odds tell a different story. Our free calculator reveals exact probabilities for any keno game, helping you understand what you're really up against.

What Is Keno?

Keno is a lottery-style game where you pick numbers (spots) from a pool of 80. The house draws 20 numbers, and you win based on how many of your picks match.

Quick Answer: Keno house edge ranges from 20-40%—one of the worst in any casino. Hitting all 10 numbers in a 10-spot game has odds of about 1 in 8.9 million. The math is brutal, but our calculator shows exactly what you're facing.

How to Use Our Free Keno Calculator

Use the Keno Odds Calculator →

Enter your game parameters to see exact probabilities and payouts.

Step-by-Step Instructions

1. Select Spots: How many numbers you're picking

2. View Catch Probabilities: Odds for each match level

3. Enter Pay Table: Your casino's payouts

4. Calculate EV: See expected return

Input Fields Explained

Field	Description	Example
Spots Picked	Numbers selected	8
Numbers Drawn	Casino draws	20
Pool Size	Total numbers	80
Catches	Matches needed	5+
House Edge	Casino advantage	25%

Keno Probability Mathematics

The Hypergeometric Distribution

Keno uses hypergeometric probability:

P(catch k) = C(spots,k) × C(80-spots,20-k) / C(80,20)

Where C(n,k) is combinations of n things taken k at a time.

Spot Game Probabilities

4-Spot Game:

Catch	Probability	Typical Payout
4/4	0.31%	120:1
3/4	4.32%	4:1
2/4	21.26%	1:1
1/4	43.27%	0
0/4	30.83%	0

8-Spot Game:

Catch	Probability	Typical Payout
8/8	0.0043%	10,000:1
7/8	0.0326%	1,500:1
6/8	0.2367%	100:1
5/8	1.83%	10:1
4/8	8.15%	2:1
3/8	21.48%	0
2/8	32.81%	0
1/8	26.65%	0
0/8	8.83%	0

10-Spot Game:

Catch	Probability
10/10	0.000011% (1 in 8.9 million)
9/10	0.00061%
8/10	0.0135%
7/10	0.161%
6/10	1.15%
5/10	5.14%

Keno House Edge

Why Keno Is So Expensive

Most casino games have 1-5% house edge. Keno typically runs 20-40%:

Game	House Edge
Blackjack (basic strategy)	0.5%
Roulette (European)	2.7%
Slots (average)	5-10%
Keno	20-40%

Pay Table Variations

House edge varies dramatically by casino:

• Casino A: 25% house edge
• Casino B: 35% house edge
• Online: 5-15% (more competitive)

Always check pay tables—huge differences exist.

Real-World Keno Examples

Example 1: 4-Spot Game Analysis

Your picks: 4 numbers Bet: $1 Pay table: 4/4 pays 100:1, 3/4 pays 3:1, 2/4 pays 1:1

Expected value:

• 4/4: 0.31% × $100 = $0.31
• 3/4: 4.32% × $3 = $0.13
• 2/4: 21.26% × $1 = $0.21
• Total EV: $0.65
• House edge: 35%

Example 2: 8-Spot Game Analysis

Your picks: 8 numbers Bet: $2 Progressive jackpot: $50,000 for 8/8

Calculation:

• 8/8 probability: 0.0043%
• Jackpot contribution: 0.0043% × $50,000 = $2.15
• Other prizes: ~$0.85
• Total EV: $3.00 on $2 bet... wait.

Reality check: Most 8/8 payouts are capped, not progressive. Typical return ~$1.50 on $2 bet = 25% house edge.

Example 3: Comparing Spot Games

Question: Is 4-spot or 10-spot better?

Analysis:

• 4-spot: Lower variance, hits more often
• 10-spot: Higher variance, bigger potential payout
• House edge: Similar (depends on pay table)

Neither is mathematically "better"—both have heavy house edge.

Best Keno Strategies

Strategy 1: Find Best Pay Tables

The only real strategy:

• Compare pay tables across venues
• Online often better than live casino
• Video keno usually better than live keno

Strategy 2: Spot Selection

No number selection strategy works:

• All numbers equally likely
• "Hot" and "cold" numbers are meaningless
• Patterns don't affect probability

Strategy 3: Bankroll Management

Since you're playing a -EV game:

• Set strict loss limits
• Play for entertainment value
• Don't chase losses

Strategy 4: Multi-Race Cards

Buying multi-race cards:

• Locks in your numbers
• No mathematical advantage
• Convenience only

Common Keno Myths

"Some Numbers Are Hotter"

Myth: Track which numbers hit recently. Reality: Each draw is independent. Past results don't predict future.

"Consecutive Numbers Never Hit"

Myth: Avoid sequences like 1-2-3-4. Reality: Any combination is equally likely.

"Spread Numbers Across the Board"

Myth: Pick numbers from all areas. Reality: Distribution doesn't affect probability.

"Fewer Spots Is Better"

Myth: 3-spot games have better odds. Reality: House edge is built into all pay tables similarly.

Video Keno vs. Live Keno

Video Keno

Aspect	Video Keno
Speed	Fast (100+ games/hour)
House edge	Often lower (15-25%)
Min bet	Usually lower
Ambiance	Solitary

Live Keno

Aspect	Live Keno
Speed	Slow (10-15 games/hour)
House edge	Often higher (25-40%)
Min bet	Usually higher
Ambiance	Social, relaxed

Mathematically: Video keno is usually better. Per hour cost: Live keno costs less due to slower pace.

Frequently Asked Questions

What are the best numbers to pick in keno?

There are no "best" numbers. Every number has equal probability. Pick your favorites or use quick pick—it doesn't matter mathematically.

How many spots should I play?

Personal preference. More spots = higher variance = bigger potential wins and losses. 4-8 spots are most popular.

Can I improve my keno odds?

Only by finding better pay tables. No number selection or betting system changes the underlying probability.

Why is keno house edge so high?

Keno is designed as casual entertainment, not serious gambling. The high edge subsidizes the relaxed pace and lounge atmosphere.

Is online keno better?

Often yes. Online keno typically has 5-15% house edge versus 25-40% at live casinos. Check specific pay tables.

Should I play multi-race cards?

Convenience only—no mathematical advantage. Useful if you'll be at the casino anyway.

Keno Probability Table

Odds of Catching All Numbers

Spots	Catch All	Odds
1	1/1	1 in 4
2	2/2	1 in 16.6
3	3/3	1 in 72.1
4	4/4	1 in 326
5	5/5	1 in 1,551
6	6/6	1 in 7,753
7	7/7	1 in 40,979
8	8/8	1 in 230,115
9	9/9	1 in 1,380,688
10	10/10	1 in 8,911,711

Pro Tips for Keno Players

• Compare pay tables: Huge variations exist

• Play video keno for better odds: Lower house edge typically

• Set loss limits: Keno is entertainment, not investment

• Understand the math: Know what you're paying for

• Avoid "systems": No strategy beats the house edge

Related Calculators

• Lottery Odds Calculator - Lottery probability
• Lottery EV Calculator - Expected value analysis
• Probability Calculator - General probability
• Bingo Calculator - Similar game odds
• Gambling Bankroll Calculator - Budget management

Conclusion

Keno's colorful boards and big potential payouts hide one of gambling's worst house edges. Our calculator shows exact probabilities for any keno game, revealing the true cost of playing. If you enjoy keno's relaxed pace and lottery-style excitement, budget accordingly—just don't expect to beat the math.

Calculate Your Keno Odds Now →

Play keno for entertainment if you enjoy it, but know what you're paying. With 25-40% house edge, every dollar bet costs you 25-40 cents on average. The calculator doesn't lie—but neither does it stop you from having fun responsibly.