How the Union Jack Trebles calculator works
Enter nine selections and the calculator maps them into the union jack layout, automatically producing the eight trebles. Each treble shows combined odds, gross return, and net profit, with a live indicator as legs settle.
- Interactive 3x3 grid with clear line highlights.
- Each-way and boost support across all trebles.
- Live tracker showing which trebles remain active.
- Commission and free bet handling for net accuracy.
- Copyable per-line summaries for tracking.
When to use the Union Jack Trebles calculator
Handy for football coupons, darts sessions, or racing multiples when you want a structured spread across a card. A neat option when you want more organisation than random trebles without committing to heavier systems.
Make smarter staking decisions
Use the grid view to slot your strongest picks where they feature across multiple lines. If one diagonal is clearly the best, consider adjusting your staking plan or compare against the trixie/patent variants. For standard qualifying and hedging, start with the main matched betting calculator.
Frequently asked questions
How many bets are in union jack trebles?
Eight trebles across the grid.
Do I need nine selections?
Yes. Every square in the grid must be filled.
Can I reuse selections?
Yes. Duplicates are allowed and the calculator reflects them in every treble.
Is this better than normal trebles?
It is mainly about structure and clarity. Use it when the grid format suits your card.