# Sports betting calculators

> Free sports betting calculators by SafeBet.ai: EV calculator, odds converter, arbitrage calculator and parlay builder. Fast, accurate and made for mobile.

- URL: https://safebet.ai/tools/
- Markdown version: https://safebet.ai/tools/index.html.md
- Last updated: 2026-09-29
- Publisher: SafeBet.ai
- Editorial policy and advertiser disclosure: https://safebet.ai/editorial-policy/

Free betting tools

Four free, fast calculators that help you bet smarter — from the team behind SafeBet’s AI picks. They work with American, decimal and fractional odds, on any device.

Updated September 2026

- ## [EV calculator](https://safebet.ai/tools/ev-calculator/)
  [Is this bet +EV? See your expected value, edge, fair odds and Kelly stake.](https://safebet.ai/tools/ev-calculator/)

  [Open calculator](https://safebet.ai/tools/ev-calculator/)
- ## [Odds converter & calculator](https://safebet.ai/tools/odds-calculator/)
  [Convert American, decimal and fractional odds and see your payout.](https://safebet.ai/tools/odds-calculator/)

  [Open calculator](https://safebet.ai/tools/odds-calculator/)
- ## [Arbitrage calculator](https://safebet.ai/tools/arbitrage-calculator/)
  [Spot sure bets across sportsbooks and get the exact stake for every outcome.](https://safebet.ai/tools/arbitrage-calculator/)

  [Open calculator](https://safebet.ai/tools/arbitrage-calculator/)
- ## [Parlay calculator & builder](https://safebet.ai/tools/parlay-builder/)
  [Stack up to 12 legs and see the parlay odds, payout and probability.](https://safebet.ai/tools/parlay-builder/)

  [Open calculator](https://safebet.ai/tools/parlay-builder/)

Which one do I need?

## The right tool for every bet

- [EV calculator](https://safebet.ai/tools/ev-calculator/)

  You think the sportsbook’s price is off and want to know whether the bet is worth it in the long run.

- [Odds converter](https://safebet.ai/tools/odds-calculator/)

  You see odds in a format you don’t use, or want to know your payout and the break-even win rate.

- [Arbitrage calculator](https://safebet.ai/tools/arbitrage-calculator/)

  Two or three sportsbooks disagree on a market and you want to lock in a profit on every outcome.

- [Parlay calculator](https://safebet.ai/tools/parlay-builder/)

  You’re combining several picks into one ticket and want the combined odds, payout and real chance of hitting.

## Let the AI find the value

Our calculators do the math. SafeBet’s AI does the research — 3 picks a day with an AI Safe Score and a full breakdown.

[Get AI picks](https://safebet.ai/pricing/) or [Free weekly pick](https://safebet.ai/free-sports-pick/)