Free sports betting calculators
Five calculators for the math behind every price: convert odds, price a parlay, find the breakeven win rate, size a hedge and check expected value. Free, no sign-up, and each one shows its formula.
Odds converter
American ↔ decimal ↔ implied probability, plus what $100 returns.
Parlay calculator
Each leg's odds → combined odds, payout and the chance every leg hits.
Breakeven calculator
Odds → the win rate a bet at that price needs to break even.
Hedge calculator
Original bet + hedge odds → the hedge stake for the same result either way, or to get your stake back.
EV calculator
Your probability + the odds → expected value per $100 and the fair price.
Parlay checker
Add your legs and see each one's last-10 and last-5 hit rate before you place it.
Pull up to the board.
The calculators do the math on a price. DARIMARKET does the research: free last-10 and last-5 hit rates for every player, plus a board ranked by confidence. It's free to join.
Join DARIMARKET freeMath only: the calculators work out what a price implies and don't predict results. DARIMARKET is research, not a sportsbook. 21+ only, and only where legal. If it stops being fun, call or text 1-800-MY-RESET (1-800-697-3738).