Free Betting Tools & Calculators.

Everything you need to bet like the sportsbook — eight free calculators anyone can use, no signup, plus the live +EV tools that come with a membership. Built on the same engine behind our documented plays.

8 free calculatorsNo signupWorks on any device

Free calculators

No signup. Use them all you want.
🎲Parlay CalculatorCombine bets, see the exact payout, and check whether the parlay is actually a +EV bet.Free🔄Odds Calculator & ConverterAmerican, decimal, fractional and implied probability — converted instantly, both ways.Free⚖️No-Vig CalculatorStrip the book's margin to find the true, fair price of any line.Free🛡️Hedge CalculatorFind the exact hedge stake to lock in a guaranteed profit on any bet or parlay.Free🔁Arbitrage CalculatorSplit your stake across both sides for a risk-free profit, with arb % and ROI.Free🧮EV & Kelly CalculatorCheck a bet's expected value and edge, then size it with the Kelly criterion.Free🧩Round Robin CalculatorBreak your picks into every smaller parlay — combos, stake and payout.Free💵Bet CalculatorEnter a stake and odds for your profit, total payout and implied win probability.Free

Member tools

Locked to members — included free with any membership or your $1 trial. The live edge engine.
🔒🔍Line ShoppingThe best price and your exact edge on every play across every US book, with arbs and middles.Members onlyUnlock with the $1 trial →🔒🎯Player Props+EV on every player prop, ranked, with the best book and price.Members onlyUnlock with the $1 trial →🔒🔴Live (In-Play)Live edges, arbitrage and middles as the lines move during the game.Members onlyUnlock with the $1 trial →🔒🤖AI Betting CoachAsk for the best bet, grade your own, and size it the Wise Guy way.Members onlyUnlock with the $1 trial →
Claim a sportsbook bonus first
New-user offers at regulated US books. Shop the best number, then grab the bonus.
FanDuelBest overall
4.8
Bet $5, get $200 in bonus bets
The most popular US sportsbook — clean app, the deepest markets, and fast payouts. Our top all-around pick.
Claim bonus →
21+. New users. T&Cs apply.
CaesarsBest bonus
4.6
$1,000 first-bet safety net
A first bet refunded up to $1,000 in bonus bets, plus the strongest rewards program in the business.
Claim bonus →
21+. New users. T&Cs apply.
FanaticsBest rewards
4.5
Up to $1,000 back in bonus bets over 10 days
Fast-growing book with FanCash rewards and one of the most forgiving welcome offers around.
Claim bonus →
21+. New users. T&Cs apply.
BetRiversBest odds boosts
4.3
Second-chance first bet up to $500 + daily odds boosts
Sharp pricing and a loyalty program that actually rewards regular volume, not just sign-up.
Claim bonus →
21+. New users. T&Cs apply.
UnderdogBest for props
4.4
Pick'em plus a full sportsbook
The deepest player-prop and pick'em menu in the game, now paired with a full sportsbook.
Claim bonus →
21+. New users. T&Cs apply.
NovigBest exchange
4.2
Zero-vig betting exchange — true prices
A no-juice peer-to-peer exchange: you bet true prices with no built-in margin, often the best number anywhere.
Claim bonus →
21+. New users. T&Cs apply.
RebetBest free-to-play
4.0
Social sportsbook, free to play
A social sportsbook you can play free, with risk-free entry and real-money options.
Claim bonus →
21+. New users. T&Cs apply.

The Wise Guy Team betting toolkit

These are the same tools we use to find and price every play we post. The free betting calculators handle the math any sharp bettor needs — parlay payouts, no-vig fair prices, odds conversion, hedging, arbitrage and disciplined unit sizing with the Kelly criterion. They work right in your browser, on any device, with nothing to sign up for.

The member tools run a live positive expected value engine across every regulated US sportsbook, surfacing the best price, your real edge, and guaranteed-profit arbitrage and middles in real time. They come with any membership or the $1 trial, alongside the documented daily plays.

How to use these calculators

Start with the odds converter to read any price as a win probability, use the no-vig calculator to find the fair line, then size your bet with the EV & Kelly calculator. Building a parlay? The parlay calculator and round robin calculator show every payout, and the hedge and arbitrage tools lock in profit when the numbers line up.

Are the Wise Guy Team betting tools free?

Yes — all eight calculators are completely free with no signup or account required. The live +EV tools (line shopping, player props, in-play and the AI coach) come with any membership or the $1 trial.

What is a no-vig calculator?

A no-vig calculator removes the sportsbook's built-in margin (the vig) from a line to reveal the true, fair price and implied probability. It's the fastest way to see whether a bet actually has value.

What's the difference between the free tools and the member tools?

The free calculators do the math any sharp bettor needs — payouts, fair prices, hedges, arbitrage and bet sizing. The member tools run a live positive-EV engine across every regulated US book, surfacing the best price, your real edge, and guaranteed-profit arbs and middles in real time.

Do I need an account to use the calculators?

No. The calculators work right in your browser with nothing to install or sign up for. You only need a membership for the live edge tools and the documented daily plays.

21+. For entertainment and educational purposes, not financial advice. If gambling stops being fun, take a break. 1-800-GAMBLER.

The free tools find the edge. Our plays cash it in. Get the live +EV tools plus 3-7 documented plays a day — $1 your first week.
Start your $1 trial →