The best calculators
to optimize your sports betting
📲 App
Add CalculaBet to your home screen
Open all your calculators in one tap, like a real app — no browser, no store.
On desktop (Chrome / Edge)
- 1Click the install icon in the address bar (on the right)
- 2Or menu ⋮ → “Install CalculaBet”
- 3The app opens in its own window
Get alerted as soon as today's odds & value are published.
Why CalculaBet
Most bettors lose — and it's not a matter of luck
Nearly 95% of bettors lose over the long run. Not from bad luck, but because they bet on instinct, never measuring whether a price is actually worth taking. A good prediction isn't enough: without a method to assess the value of a price and manage your stake, even the best instincts eventually fade behind the bookmaker's margin.
Profitable bettors don't guess. They calculate.
What separates a profitable bettor from an amateur isn't flair, it's discipline. Before every bet, they answer three precise questions: is this price more generous than the event's true probability (the value)? Is this bookmaker fair on this market (the RTP)? And how much should they stake without endangering their bankroll (the optimal stake)? Three calculations, made coldly, that turn a bet into a reasoned decision.
A calculator for every step of your reasoning
Our 18 tools cover the three key moments of a thoughtful bet:
Spot the value
Value Bet, Odds Probabilities and RTP tell you whether a price is really worth it and whether the bookmaker is fair on this market.
Lock in the profit
Surebet, Dutching, Live Odds and Matched Betting let you lock in a profit or cover a bet, whatever the outcome.
Manage your capital
Kelly, ROI and Target Profit calculate the right stake and measure your real return to make your bankroll last.
100% free, no sign-up
All our calculators are entirely free and available without creating an account. We never make money by charging you for a tool: only, and only if you want to, when you choose a bookmaker through our partner links. You stay in control, we keep our tools open to everyone.
Pick your calculator and get your result in seconds.