Quinella Calculator
Calculate quinella bet costs and combinations. Quinella bets win if you pick the top two finishers in either order.
Formula:Box Cost = n × (n-1) ÷ 2 × Stake
Base stake for each combination
Total Cost
$6
3 combinations
Combinations
3
3 × 2 ÷ 2 = 3
All Combinations (3)
1/4
1/6
4/6
Either order wins - 3/7 wins with 3-7 or 7-3 finish
Quinella vs Exacta Comparison
Quinella (3 horses):
3 combos = $6
Exacta Box (3 horses):
6 combos = $12
Try These Examples
Quick-start with common scenarios
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What is a Quinella?
A quinella requires picking the first two finishers in either order. Box formula: n × (n-1) ÷ 2. A $2 quinella box with 4 horses costs (4×3÷2) = 6 combinations × $2 = $12. Quinellas are easier to hit than exactas since order doesn't matter.
Key Facts About Quinella Bets
- Quinella: Pick 1st and 2nd in either order
- Box formula: n × (n-1) ÷ 2
- $2 quinella box with 3 horses = 3 combos = $6
- $2 quinella box with 4 horses = 6 combos = $12
- $2 quinella box with 5 horses = 10 combos = $20
- Quinellas typically pay less than exactas
- Easier to hit since order doesn't matter
- Not available at all tracks (some US tracks don't offer quinellas)
Quinella Box Cost Reference
| Horses | Combinations | $1 Cost | $2 Cost | $5 Cost |
|---|---|---|---|---|
| 2 horses | 1 | $1 | $2 | $5 |
| 3 horses | 3 | $3 | $6 | $15 |
| 4 horses | 6 | $6 | $12 | $30 |
| 5 horses | 10 | $10 | $20 | $50 |
| 6 horses | 15 | $15 | $30 | $75 |
| 7 horses | 21 | $21 | $42 | $105 |
| 8 horses | 28 | $28 | $56 | $140 |
Frequently Asked Questions
What is a quinella bet?
A quinella bet requires you to pick the first two finishers in either order. If you bet $2 on horses 3 and 7, you win if they finish 1st and 2nd in any order (3-7 or 7-3).
How is quinella box cost calculated?
Quinella box cost = n × (n-1) ÷ 2 × stake, where n is the number of horses. For example, a $2 box with 4 horses: (4 × 3 ÷ 2) = 6 combinations × $2 = $12.
Quinella vs Exacta: What's the difference?
An exacta requires the exact order of finish (1st then 2nd), while a quinella wins with either order. Quinellas are easier to hit but typically pay less. An exacta box on 2 horses costs 2× stake; a quinella costs 1× stake.
Are quinellas offered everywhere?
Not all tracks offer quinellas. Many US tracks have replaced them with exactas. Quinellas remain popular in Australia, UK, and some US tracks. Check your track's bet menu before wagering.
When should I bet quinellas vs exactas?
Bet quinellas when you're confident two horses will finish top 2 but unsure of the order. If you have a strong opinion on the order, an exacta may offer better value. Compare payoffs - sometimes boxing an exacta pays more than a quinella.
How this works
Calculations follow the published mathematics of the game — combinatorics for cards, probability theory for dice, and expected-value accounting for wagers. Results are verified against independent references (primarily Wizard of Odds). No calculation here is an opinion or recommendation; it is arithmetic applied to the rules of the game.
What this tool can’t do
When to consult a professional
This tool computes probability and expected value. It is not a betting system and cannot predict the outcome of any individual wager. If gambling is causing problems for you or someone you know, call the National Problem Gambling Helpline at 1-800-GAMBLER.
Sources
- [1]Wizard of Odds — Michael Shackleford, ASAIndustrywizardofodds.comAccessed Apr 21, 2026
Actuary; widely cited casino-game probability reference. Used for house-edge and EV verification.
- [2]National Council on Problem GamblingOfficial sourcencpgambling.orgAccessed Apr 21, 2026
Responsible-gambling guidance and 1-800-GAMBLER helpline.
Joseph OrdunaFounder & Software Engineer
Full-stack software engineer specializing in embedded systems, web architecture, and AI/ML. Founder of Practical Web Tools. Built the gesture-controlled drone IP acquired by KD Interactive (Aura Drone, sold on Amazon).