Read the price
Convert the line into implied probability. The number is your break-even win rate.
Free sports betting calculators
Six tools for the math behind every bet. Price a parlay, hedge an open ticket, split picks into a round robin, convert a price, strip the vig and size the stake. No sign-up, no email.
Parlay calculator
Stack up to 12 legs. See the parlay odds, the payout on your stake and the win rate each leg needs.
3 legs at -110+596$10 pays $69.58 Open the calculator →Hedge calculator
Lock a profit on an open bet, a futures ticket or a parlay's last leg. Converts bonus bets to cash too.
$50 at +1900Hedge at -150+$350 either way Open the calculator →Round robin calculator
Every parlay in your round robin, priced. Grade each leg a win, push or loss and see what the ticket pays.
4 legs by 2s6 parlays3 wins +$49.34 Open the calculator →Odds converter
American, decimal, fractional and implied probability. Type one and get the rest, plus the payout on your stake.
-1101.9110/1152.38% Open the converter →No-vig calculator
Remove the hold from any two-way or three-way line. See the fair odds, then check a price for expected value.
-150 / +130Hold 3.48%Fair -138 Open the calculator →Kelly criterion calculator
Turn an edge into a stake. Full, half or quarter Kelly on any bankroll, with the expected value of the bet.
55% at -110Edge 2.62%1/4 Kelly $13.75 Open the calculator →How the calculators fit together
Single bets
From a posted line to a sized bet
Find the fair line
De-vig a sharp market to get the true win probability for each side, then compare the fair price to your book.
Size the bet
Enter the fair probability and your book's price into the Kelly calculator for the stake.
Tickets with more than one leg
Price the ticket, spread the risk, lock the result
Price the parlay
Multiply the legs into one price and see the payout, plus the win rate each leg needs.
Spread the risk
Split your picks into a round robin and see how many legs must win before the ticket profits.
Lock the result
Late in a parlay or a futures run, hedge the other side for a profit either way.
The Kennel
Read the math in depth
Let the bots find the edge for you.
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