Free Lucky 15 Calculator
Enter your unit stake, your four selections, and whether each one won or lost. This tool calculates your total return, total stake, and profit/loss for a standard win-only Lucky 15.
A Lucky 15 contains 15 lines total: 4 singles, 6 doubles, 4 trebles, and 1 fourfold.
Selection 1
Selection 2
Selection 3
Selection 4
What is a Lucky 15 bet?
A Lucky 15 is a popular multi-bet in horse racing and football betting. It uses four selections and combines them into 15 separate bets:
- 4 singles
- 6 doubles
- 4 trebles
- 1 fourfold accumulator
Because your stake is spread across 15 lines, a Lucky 15 can still return money even if not all picks win. It offers a middle ground between high-risk accumulators and lower-risk singles.
How Lucky 15 returns are calculated
1) Count the total stake
Total stake = stake per line × 15. For example, £2 per line means a £30 total outlay.
2) Work out winning lines
Only combinations made entirely of winning selections return money. If you have two winners, you get returns from the two winning singles and the double formed by those two winners.
3) Multiply decimal odds for each line
Each line return = stake × product of decimal odds in that line. For fractional odds, convert first:
- 5/2 = 3.50 decimal
- 9/4 = 3.25 decimal
- Evens = 2.00 decimal
Why use a Lucky 15 calculator?
Manual calculation gets tedious fast, especially when you have mixed results and different odds formats. A dedicated Lucky 15 bet calculator helps you:
- Instantly see total return and net profit/loss
- Understand how many winning lines you actually hit
- Compare scenarios before placing a bet
- Avoid costly arithmetic mistakes
Worked example
Suppose your stake per line is £1, and your decimal odds are:
- Selection 1: 3.00 (won)
- Selection 2: 4.00 (won)
- Selection 3: 5.00 (lost)
- Selection 4: 2.50 (lost)
Your total stake is £15. Winning lines are:
- 2 winning singles (Selection 1 + Selection 2)
- 1 winning double (Selection 1 × Selection 2)
Returns = £1×3.00 + £1×4.00 + £1×(3.00×4.00) = £3 + £4 + £12 = £19. Net profit = £19 - £15 = £4.
Common mistakes bettors make
- Forgetting total lines: A Lucky 15 always has 15 bets.
- Mixing odds formats: Combining fractional and decimal without converting correctly.
- Confusing return and profit: Return includes returned stake on winning lines; profit is return minus total stake.
- Ignoring bookmaker rules: Some firms add bonuses or offer special terms that change payout.
Lucky 15 vs accumulator
A fourfold accumulator is just one line: all four selections must win. A Lucky 15 includes the fourfold plus singles, doubles, and trebles. That means:
- Higher total stake than a single acca
- More chances to get some return
- Lower all-or-nothing risk profile
Frequently asked questions
Does this calculator include bookmaker bonuses?
No. This page calculates a standard win-only Lucky 15 without enhanced-payout promotions. If your bookmaker offers bonuses, your actual payout may be higher.
Can I enter fractional odds?
Yes. You can use decimal odds (like 3.75), fractional odds (like 11/4), or “evens”.
What happens if all four selections win?
You get returns from all 15 lines. This is the maximum base return for a Lucky 15.
Final note
This Lucky 15 bet calculator is a fast planning tool for horse racing and sports betting multiples. Use it to understand your exposure before you place bets, and always gamble responsibly within a fixed budget.