Bet Slip Calculator
Work out the exact payout and profit for a single bet or a multi-leg parlay. Enter odds in whichever format you're used to, add as many legs as you need, and see the numbers update instantly.
How parlay odds are calculated
A parlay (also called an accumulator) combines two or more bets into a single wager where every leg has to win. To find the combined odds, convert each leg to decimal odds and multiply them together: combined = decimal₁ × decimal₂ × decimal₃ × .... Your payout is simply stake × combined decimal odds, and your profit is the payout minus your original stake.
Once you've settled on your legs here, use the odds calculator to double-check any individual price, or browse the best CS2 match betting sites to see where those odds are actually available.
Single bets vs. parlays
In Single Bets mode, every row is treated as its own separate wager at your stake amount — this tool shows what each one pays individually, plus the combined total if every single bet happened to win. In Parlay mode, all legs are chained into one bet: the odds multiply together for a much bigger potential payout, but if even one leg loses, the entire parlay loses.
Worked example
Say you stake $50 on a 3-leg parlay at -150, +120, and -110 (American odds). Converted to decimal that's 1.67, 2.20, and 1.91 — multiplied together, the combined odds come out to almost exactly 7.00 decimal (roughly +600 American). A $50 stake would return a $350 payout — $300 in profit — reflecting the compounding risk of needing all three legs to land, which the calculator's implied probability (about 14.3%) makes clear.
Frequently asked questions
What is a parlay (accumulator)?
A parlay combines multiple individual bets into one wager. Every leg must win for the parlay to pay out — if any single leg loses, the whole parlay loses, even if every other leg won.
How do you calculate parlay odds?
Convert each leg's odds to decimal format, then multiply all of them together. The result is your combined decimal odds — multiply that by your stake to get the total payout.
What happens if one leg of a parlay loses?
The entire parlay loses and pays out nothing, regardless of how many other legs won. This is why parlay odds are so much higher than single-bet odds — you're being compensated for the compounded risk.
Is a parlay riskier than placing single bets?
Yes. A 3-leg parlay where each leg has a 60% chance of winning only has roughly a 22% chance of the whole parlay landing (0.6³), even though each individual bet looks reasonably safe on its own.
Can I mix odds formats within one parlay?
This calculator uses one format at a time for entry, but internally converts everything to decimal odds before combining legs — so you can safely switch the display format at any point without affecting the math.
Does this work for CS2 and esports match betting?
Yes — the math behind converting and combining odds is identical whether you're betting on esports, traditional sports, or skin gambling match-betting markets. Check CS2 match betting sites for where to actually place these bets.
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