Free calculator

FanDuel round robin calculator

A FanDuel round robin forms fixed-size parlays from your selections, excluding combinations that contain more than one selection from the same game. Enter a game identifier for each price so the calculator can apply that rule. Total risk equals the number of eligible combinations multiplied by the stake per parlay.

Get a free API key Read the docs

FanDuel API is an independent data service operated by FF API Inc. It is not affiliated with, endorsed by or sponsored by FanDuel.

Your inputs

Selection odds2–12 comma-separated prices.Game IDsOne ID per selection. Reuse the same ID for picks in the same game.Selections per parlayWhole number from 2 through 8.Stake per parlay ($)Original cash stake.

Calculated result

Eligible parlays: 3
Total stake: $30.00
Return if every selection wins: $113.86
All-win net profit: $83.86

Show the working

Eligible parlays
Combinations excluding selections from the same game

Total stake
3 × 10

Return if every selection wins
Sum of every eligible combination payout

All-win net profit
All-win return − total stake

Formula and worked example

Eligible combinations exclude repeated game IDs. Total stake = eligible combinations × stake per parlay.

Three selections from three different games make three two-leg parlays. If the first two selections share a game, only two combinations remain.

Default example output	Value
Eligible parlays	3
Total stake	$30
Return if every selection wins	$113.8636
All-win net profit	$83.8636

The all-win return assumes every selection wins. It is not expected value. Confirm available combinations and actual settlement in the bet slip.

Rules reference: FanDuel’s published guidance, reviewed November 6, 2026. Mathematical model shown above; actual offer terms take precedence.

Use the market data in your app

Read game market prices through GET /api/v1/markets and player props through GET /api/v1/props. The API reference describes available fields, filters and data access.

Related calculators

FanDuel bonus bet and no-sweat value calculatorEV = p × win-state net cash + (1 − p) × loss-state expected net cash. Bonus winnings = face × (decimal − 1).FanDuel hedge calculatorHedge stake = original stake × original decimal price ÷ hedge decimal price.FanDuel same game parlay calculatorIndependent probability = product of no-vig leg probabilities. Ratio = quoted implied probability ÷ independent probability.FanDuel parlay calculatorReturn = stake × [1 + (product of active decimal prices − 1) × (1 + boost)].FanDuel profit boost calculatorBoosted decimal odds = 1 + (original decimal odds − 1) × (1 + boost).FanDuel odds converterd = 1 + A/100 for positive odds; d = 1 + 100/|A| for negative odds. Implied probability = 1/d.FanDuel payout calculatorTotal return = stake × decimal odds; net profit = total return − stake.FanDuel no-vig calculatorFair probabilityᵢ = (1/decimalᵢ) ÷ sum(1/decimal).FanDuel dead heat calculatorReturn = stake × remaining places ÷ tied competitors × decimal odds.FanDuel cash-out value calculatorModeled value = original stake × original decimal odds × current assumed win probability.

Educational calculations only. Responsible gambling resources.

Questions

How does the fanduel round robin calculator work?

What is the formula?

Can you show a worked example?

What rules and limitations matter?

Are these live prices?

Does total return include the stake?

Make your first call in a few minutes

Sign up, create a key in the dashboard, and send it as a Bearer token. The free plan needs no card and reads the same data five minutes behind.

Get a free API key