Lucky 15 Betting Calculator
Enter four selections and a stake per line. This tool accepts decimal odds (e.g., 3.50) or fractional odds (e.g., 5/2).
What is a Lucky 15 bet?
A Lucky 15 is a popular accumulator-style multiple bet built from four selections. It contains exactly 15 separate bets:
- 4 singles
- 6 doubles
- 4 trebles
- 1 four-fold accumulator
Because there are 15 lines, your total outlay is simply:
Total Stake = Stake Per Line × 15
How this lucky 15 calculator works
Step 1: Enter odds for each pick
You can type odds in either decimal format (like 3.20) or fractional format (like 11/5). Fractional odds are automatically converted internally to decimal odds for the calculations.
Step 2: Enter your stake per line
If you stake £2 per line, your total cost is £30. If you stake £0.50 per line, your total cost is £7.50.
Step 3: Tick the winners
The calculator counts all winning singles, doubles, trebles, and the four-fold (if all 4 win), then shows your total return and net profit/loss.
Return formula used
For each winning line:
Line Return = Stake Per Line × (Product of Decimal Odds in that line)
Total return is the sum of all winning line returns. Net result is:
Profit/Loss = Total Return − Total Stake
This calculator includes stake in returns (standard decimal-odds convention).
How many lines can win?
- 0 winners: 0 winning lines
- 1 winner: 1 winning line (single only)
- 2 winners: 3 winning lines (2 singles + 1 double)
- 3 winners: 7 winning lines (3 singles + 3 doubles + 1 treble)
- 4 winners: all 15 lines win
Important notes before betting
- This tool calculates standard Lucky 15 returns only.
- It does not include special bookmaker bonuses (for example, enhanced returns for all winners).
- It does not include each-way terms, dead-heats, Rule 4 deductions, or void selection adjustments.
- Always double-check your bookmaker slip before placing a real wager.
Quick strategy tips
Lucky 15 bets can produce very large payouts when several selections win, but remember the total stake is 15x your unit stake. A sensible approach:
- Use a stake size that keeps total exposure comfortable.
- Avoid forcing high-risk picks just to chase huge accumulators.
- Track your results over time so you can evaluate your betting discipline.
Use this calculator to plan the wager first, then decide whether the risk and potential return fit your bankroll.