Lucky 15 Calculator

This Lucky 15 calculator works out horse racing returns across all 15 bets — the singles, doubles, trebles and four-fold — for any mix of winners, each-way included.

How a Lucky 15 Works

A Lucky 15 covers every possible combination from four selections: 4 singles, 6 doubles, 4 trebles and 1 four-fold. That’s 15 bets at your unit stake. The structure means you collect something as long as at least one selection wins, and the returns escalate sharply if three or four come in.

What the Numbers Look Like

The numbers tell the story. Four selections at 3/1, 4/1, 5/1 and 6/1 with a £1 unit stake costs £15. If all four win, you collect £1,679. If three win, you’re looking at anywhere from £209 to £335 depending on which three. Even two winners returns between £29 and £55. One winner at 6/1 returns £7 — a loss on the bet, but not a wipeout. That graduated payout structure is the entire point.

Bonuses and When to Use One

Most bookmakers offer bonuses on Lucky 15s: a consolation payout if only one selection wins (usually double the odds), and a percentage bonus if all four win (typically 10-20%). Factor these in and the value equation shifts. The Lucky 15 works best when you have four genuine fancies at decent prices — cramming in short-priced selections defeats the purpose because the singles barely cover your total outlay.

How to Use the Lucky 15 Calculator for Horse Racing

Enter your four selections’ odds and results and the calculator settles all 15 lines at your unit stake — remember the total cost is 15 times the unit. Mark a non-runner as Void and the affected lines re-price automatically. The breakdown groups returns by singles, doubles, trebles and the four-fold, so you can see exactly where the money came from.