Patent Calculator
The Patent bet calculator — returns on all 7 bets from three selections
Use this Patent bet calculator to work out returns on all seven bets from three horse racing selections — including the singles, which pay from just one winner.

How a Patent Works
A Patent is a Trixie plus singles: 3 singles, 3 doubles and 1 treble from three selections. Seven bets total. The singles mean you collect something even if only one selection wins, which makes it the safest full cover option for three picks.
The Cost of the Cover
The trade-off is cost. At £1 unit stake, a Patent costs £7 — nearly double the £4 Trixie. Those three extra pounds buy you three singles that act as insurance. If only one of your three selections wins at 5/1, the single returns £6 against your £7 total outlay. Not a profit, but not a wipeout either. With two winners, the doubles kick in and you’re well into profit. All three and you’re looking at the full force of the treble on top of everything else.
When the Patent Earns Its Keep
The Patent works best when you have three selections at bigger prices where even a single winner returns close to your total stake. Three picks at 6/1, 8/1 and 10/1 as a £1 Patent costs £7. One winner at 10/1 returns £11. Two winners at 8/1 and 10/1 returns £99 from the double plus £20 from the singles. The maths reward patience and price.
How to Use the Patent Bet Calculator
Enter your three selections and the calculator settles all seven lines — singles, doubles and treble — at your unit stake, £7 in total at £1 units. Mark results as won, placed, lost or void, and the breakdown shows exactly which lines paid.
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Patent Calculator FAQs
Seven: 3 singles, 3 doubles and 1 treble across three selections. A £1 unit stake costs £7.
Just one — the singles guarantee a return from any winner, though whether it’s a profit depends on the price.
The Patent costs £3 more per unit for the 3 singles. Pick the Patent when your selections are at bigger prices, the Trixie when you’d rather keep the outlay down and two winners is your realistic bar.