Lucky 15 Free Bet Calculator
Enter your stake per line, odds, and outcomes for 4 selections. This tool calculates all 15 bets (4 singles, 6 doubles, 4 trebles, 1 fourfold).
This calculator is for educational use and estimates returns based on entered odds and options. Always check your bookmaker's exact promotion terms.
How a Lucky 15 free bet works
A Lucky 15 is a multiple bet made from 4 selections, covering every possible combination. In total, that creates 15 separate bets:
- 4 singles
- 6 doubles
- 4 trebles
- 1 fourfold accumulator
Because you have singles included, you can still get a return with just one winning selection. That makes Lucky 15s popular with bettors who want broader coverage than a single accumulator.
What “free bet mode” means in this calculator
When you tick Free bet mode, the calculator assumes your stake is not returned on winning lines. That is how many free bet tokens work at sportsbooks. In normal cash mode, stake is returned on winning lines.
Quick difference
- Cash stake: Return includes stake + winnings.
- Free bet stake not returned: Return includes winnings only.
Lucky 15 calculator features included
This page calculates:
- Total stake value (15 lines × stake per line)
- Total return across all winning lines
- Total winnings before bonuses
- Optional Lucky 15 winner bonuses (10%, 15%, 20%)
- Optional “double odds if one winner” promotion
- Net result and full 15-line breakdown
How to use this Lucky 15 free bet calculator
Step 1: Enter stake per line
If you enter £1, total Lucky 15 stake value is £15. If you enter £2, total stake value is £30, and so on.
Step 2: Enter the 4 odds
You can use decimal odds (like 3.50) or fractional odds (like 5/2). The calculator converts fractional odds automatically.
Step 3: Mark results as won or lost
Returns only come from lines where every selection in that line wins.
Step 4: Choose promo options
Enable free bet mode and bonus options only if they match your bookmaker terms.
Example scenario
Suppose your stake per line is £1, and 2 of your 4 selections win. You might get:
- Returns from the winning singles
- Returns from doubles containing only winning picks
- No returns from trebles/fourfold if they include a loser
- Possibly +10% winners bonus (if your book includes it)
The line-by-line table in this calculator shows exactly where the return is coming from.
Important notes before placing a Lucky 15
- Promotions vary a lot by bookmaker and market.
- Some offers exclude certain sports or minimum odds.
- Each-way Lucky 15 bets use a different calculation model.
- Free bet promos often cap payout or exclude stake return.
Always read the specific terms and conditions before relying on an estimate.
Responsible gambling reminder
Betting should be entertainment, not a way to make guaranteed income. Set limits, never chase losses, and take a break if gambling stops being fun.