# Betting calculators

> Independent. Not affiliated with, endorsed by or sponsored by Novig.

Canonical: https://novigapi.com/calculators

Fifteen free calculators for devigging, hedging, arbitrage, EV, Kelly and Novig's percent prices and fees.

- [No-vig calculator](https://novigapi.com/no-vig-calculator): Free no-vig and devig calculator. Turn any two or more prices into fair odds with the multiplicative, additive, power and Shin methods, with live Novig markets.
- [Novig odds converter](https://novigapi.com/novig-odds-converter): Convert a Novig percentage price to American, decimal and fractional odds, with the live taker fee included. 40% is +150. Free, with live Novig prices.
- [Novig fee calculator](https://novigapi.com/novig-fee-calculator): Work out the Novig taker fee on any fill: 0.06 x P x (1 - P) per $1 of payout, the maker credit, and the effective price. Novig's own examples built in.
- [Hedge calculator](https://novigapi.com/hedge-calculator): Free hedge betting calculator. Enter your original bet and the hedge price to see the stake that locks equal profit, the break-even hedge, and every outcome.
- [Parlay hedge calculator](https://novigapi.com/parlay-hedge-calculator): Hedge the final leg of a parlay. Enter the legs, the stake and the hedge price to see the stake that locks the same profit whether the parlay hits or not.
- [Arbitrage calculator](https://novigapi.com/arbitrage-calculator): Free arb calculator for 2 and 3 way markets. See whether prices form an arbitrage, the stake for each outcome, and the profit, with the Novig live taker fee.
- [EV calculator](https://novigapi.com/ev-calculator): Betting expected value calculator. Enter a fair probability and the price offered to see EV in dollars and percent, the edge and the break-even rate.
- [Kelly criterion calculator](https://novigapi.com/kelly-criterion-calculator): Kelly criterion calculator for betting: enter your win probability, the price and your bankroll to get full, half and quarter Kelly stakes.
- [Implied probability calculator](https://novigapi.com/implied-probability-calculator): Convert any odds to implied probability, and remove the vig from a two-sided market to get the no-vig probability. American, decimal, fractional and Novig percent.
- [Odds converter](https://novigapi.com/odds-converter): Convert betting odds between American, decimal, fractional and implied probability (Novig percent), with the profit on common stakes.
- [Hold calculator](https://novigapi.com/hold-calculator): Calculate the hold and overround of a 2 or 3 way market. -110 / -110 holds 4.55%. See the vig on any line, and the no-vig price of each side.
- [CLV calculator](https://novigapi.com/clv-calculator): Measure closing-line value: compare the price you took with the no-vig closing price to get CLV as EV at the close and in probability points.
- [Bonus bet converter](https://novigapi.com/bonus-bet-converter): Convert a bonus bet (stake not returned) to cash with a hedge. See the hedge stake, the locked profit and the conversion rate for any pair of prices.
- [Round robin calculator](https://novigapi.com/round-robin-calculator): Build a round robin from 3 to 8 legs by 2s, 3s or more. See every parlay, the total stake and the payout for any combination of winning legs.
- [Middle calculator](https://novigapi.com/middle-calculator): Price a middle: over a low line and under a high line. See the result if it lands in the middle, the worst case and the hit rate needed to break even.

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