How do I calculate parlay odds?

Multiply the decimal odds of each selection together. For example, three bets at 1.80, 2.10, and 1.50 gives combined odds of 1.80 × 2.10 × 1.50 = 5.67. A $10 stake would return $56.70.

What is the difference between a parlay and an accumulator?

They are the same thing. 'Parlay' is the American term, while 'accumulator' (or 'acca') is used in the UK and Europe. Both refer to a single bet that combines multiple selections — all must win for the bet to pay out.

How many selections can I add to a parlay?

Most bookmakers allow between 2 and 20 selections in a parlay. This calculator supports unlimited selections. Keep in mind that each added selection lowers the implied probability of winning.

What happens if one leg of my parlay loses?

If any single selection in your parlay loses, the entire bet loses. That is the trade-off for the higher combined odds — every leg must win. Some bookmakers offer 'parlay insurance' that refunds your stake if one leg loses.

Free Tool

Parlay / Accumulator Calculator

Add your selections, set your stake, and instantly see combined odds, total payout, and implied probability for your parlay.

Parlay Builder

Add your selections and see combined odds, payout, and implied probability.

Stake

Selection

Odds (decimal)

Selection

Odds (decimal)

Selections—

Combined Odds—

Stake—

Total Payout—

Profit—

Implied Probability—

How parlay betting works

A parlay (or accumulator) combines multiple bets into one. The odds multiply together, creating bigger payouts — but every selection must win.

Pick your selections

Choose two or more outcomes from different matches. Each one becomes a "leg" of your parlay.

Odds multiply together

The decimal odds for each leg are multiplied. Three legs at 1.80, 2.10, and 1.50 gives combined odds of 5.67.

Higher risk, higher reward

A $10 stake at 5.67 combined odds returns $56.70. The probability of winning drops with each leg you add.

All legs must win

If even one selection loses, the entire parlay loses. That is the trade-off for the multiplied odds.

Why use a parlay calculator

See exact payouts

Know exactly what your parlay returns before placing the bet. No guessing, no mental math.

Implied probability

See the real chance of your parlay hitting based on the combined odds. Helps you decide if the risk is worth it.

Compare stake sizes

Try different stake amounts instantly to find the right balance between risk and potential profit.

Unlimited selections

Add as many legs as you want. The calculator handles 2-leg doubles through to 20-leg accumulators.

Frequently asked questions

Multiply the decimal odds of each selection together. Three bets at 1.80, 2.10, and 1.50 gives 1.80 × 2.10 × 1.50 = 5.67. A $10 stake would return $56.70.

They are the same thing. "Parlay" is the American term, while "accumulator" (or "acca") is used in the UK and Europe. Both combine multiple selections into one bet where all legs must win.

Most bookmakers allow between 2 and 20 selections. This calculator supports unlimited legs. Each added selection lowers the implied probability of winning.

If any single selection loses, the entire parlay loses. That is the trade-off for the higher combined odds. Some bookmakers offer parlay insurance that refunds your stake if one leg loses.