Betting
🎯 Parlay / Accumulator
Combine up to 20 legs into one payout with combined odds.
Result
—
How it works
The formula
Combined odds = product of all legs. Payout = stake × combined. Profit = payout − stake.
Example: 1.8×2.0×1.5 = 5.40 combined; 20 stake → 108 payout (88 profit).
FAQ
Questions
Why are parlays risky?
Every leg must win; probabilities multiply, so the chance of full success drops fast.
Do parlays have higher margin?
Yes — the bookmaker margin compounds across legs.
More tools
Related calculators
🔁
Odds Converter
Convert decimal, fractional, American, Hong Kong & implied probability instantly.
📈
Expected Value (EV)
Find the true EV, edge and ROI of a single bet.
✂️
Vig Remover / True Odds
Strip the bookmaker margin to reveal fair odds and true probability.
🧩
System Bet (Lucky 15/31/63)
Trixie, Yankee, Lucky 15/31/63 — full breakdown of combination bets.
For entertainment & education only. OSOTOTO does not offer gambling. Results are mathematical estimates — variance means real outcomes differ. 18+. Need support? Self-check.
