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Features

Build a parlay, and see what it is worth.

Pick 2 to 25 legs from the slate's moneylines, spreads, totals and player props. The Parlay Builder shows the combined odds, the chance they imply, your own chance and EV, and warns you when legs share a game.

The Parlay Builder with two player-prop legs: combined odds, chance per leg and EV
The Parlay Builder with two player-prop legs: combined odds, chance per leg and EV. Sample data.

01Picking legs

Every leg comes from the slate.

The games still to kick off, each with FanDuel's cached prices. Tap an outcome to add it; tap it again to take it out.

  • 01

    Main lines

    The moneyline, spread and total of every upcoming game with prices. Picking the other side of a market swaps the leg, since both cannot win.
  • 02

    Up to 25 legs

    A parlay here takes 2 to 25 legs. Different markets of one game, and different players' props, can all go in, with a Same game chip on each leg that shares one.
A player's page with the cached props for the next game
A player's page with the cached props for the next game. Sample data.
01

Player props as legs

Passing, rushing and receiving yards and anytime touchdown, from Unitley's shared cache: opening a game's props reads the cache and costs nothing.
  • No props cached yet? Load props for this game works in the 24 hours before kickoff
  • Loading uses Odds API credits from Unitley's shared quota, and everyone shares what it loads
  • A reloaded price shows as a new choice; pick it to replace the leg at the old price
Player props

02The numbers

Priced against your bankroll.

The math runs on Unitley's servers, the same as the calculators and the API, against your own risk profile and limits.

Combined odds
The legs' prices multiplied, in American and decimal odds, with the number of legs.
Implied chance
The chance the combined price implies, the books' margins included.
Your chance
Give your own chance on each leg (each one starts from its implied chance as a hint). With one on every leg, the combined chance multiplies them.
EV per $1
What each dollar staked is worth at your chance, once every leg has one: above zero is an edge, below is a cost.
Suggested stake
Your risk profile's fraction of Kelly, held under its cap, your max stake and the room left under your daily and weekly loss limits. None when there is no edge.

03Same-game legs

Legs on one game move together.

A team's spread and the game's total, or a quarterback's yards and the team's points, are not independent, so multiplying their chances can be far off in either direction.

  • 01

    Marked on the leg

    Every leg on a game another leg shares carries a Same game chip, so you can see which ones move together.
  • 02

    Called out in the summary

    A Correlated legs note sits beside the numbers: the combined chance assumes independent legs, and these are not.
  • 03

    No suggested stake

    The combined odds still show, but once every leg has your chance, the stake reads None: a combined chance built on correlated legs is not one to stake on.
    Parlays and correlation

04Nothing saved

A scratchpad, not a bet slip.

The Parlay Builder keeps only the legs you have picked, on the page, until you clear them. It saves nothing to your account and places nothing. To keep a parlay you bet, ask the analyst, Claude or another agent to log it in your Bet Log.

  • The parlay calculator

    The same math with your own prices, no account needed.
    Parlay calculator

  • In Claude

    Ask Claude for a parlay and it prices it with the same calc_parlay tool, correlation warning included.
    Unitley in Claude

Price your next parlay.

Create an account, then run Unitley in your own Claude, in another AI agent, or in the web app on your own key. Analysis, never a guarantee.

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