FanDuel API
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FanDuel payout calculator

A FanDuel payout calculation multiplies your stake by decimal odds to give total return if the bet wins. Subtract the original stake for net profit. Enter a quoted American, decimal or fractional price. For a Same Game Parlay, enter the combined price quoted by the operator rather than multiplying correlated individual legs.

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Your inputs

Calculated result

Total return
$30.00
Net profit
$20.00
Implied probability
33.33%
Show the working

Total return
10 × 3

Net profit
10 × (3 − 1)

Implied probability
100 ÷ 3

Formula and worked example

Total return = stake × decimal odds; net profit = total return − stake.

A winning $10 bet at +200 returns $30: $20 winnings plus the $10 stake.

Default example outputValue
Total return$30
Net profit$20
Implied probability33.3333%

Settlement, voids, dead heats, deductions and promotion terms can affect what is paid. This is a conditional payout calculation, not a live account quote.

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.

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Educational calculations only. Responsible gambling resources.

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