Free DFS calculators

Know the payout before you build the card.

Use the PrizePicks payout calculator, Underdog flex payout calculator, and DraftKings Pick6 payout calculator to compare Power Play, Flex Play, Standard, Insurance, and fixed multiplier outcomes.

Fantasy projections

MLB Hitter Range Board

Compare current DraftKings MLB fantasy-point floor, projection, and ceiling estimates. Built for range-aware research, not lineup optimization.

Free previewMLB hittersFloor · point · ceiling
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AI research

Sports Betting Prompt Builder

Build a structured, skeptical prompt that requires current sources, counterarguments, missing-data disclosure, and a no-action conclusion when evidence is weak.

FreeNo signupResearch only
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PrizePicks

PrizePicks Payout Calculator

Calculate Power Play and Flex Play payouts for 2-6 picks, including 3/4, 4/5, and 5/6 Flex results.

Power Play Flex Play 2-6 picks
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Underdog Fantasy

Underdog Flex Payout Calculator

Check Standard and Flex payouts for 2-8 pick entries, including partial Flex outcomes on larger cards.

Standard Flex 2-8 picks
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DraftKings Pick6

Pick6 Payout Calculator

Calculate Pick6 fixed multiplier payouts for 2-6 pick entries and compare the payout chart against other platforms.

Pick6 Fixed odds 2-6 picks
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Compare payout styles before you compare props.

The calculators answer the mechanical question first: what does this entry return if the card hits? Once the payout structure is clear, use Propeller to research which props deserve a spot on the card.