Calculators
Fifteen free betting calculators for odds, value, and bankroll
- 15 calculators
- No account needed
- Worked examples
Why Calculators
What Calculators does for you
Convert odds, remove the vig, size bets, and model payouts. The calculator collection covers odds conversion, implied probability, prediction market prices, no-vig fair odds, hold, expected value, Kelly criterion, free bets, arbitrage and hedging, parlays, round robins, and more. Free, no account needed.
Odds and probability
Convert between American, decimal, fractional, and cents, and see the break-even probability of any price.
Fair odds and value
Remove the vig from a two-sided market, compare hold across books, and calculate expected value.
Bankroll and bet building
Size bets with Kelly criterion, convert free bets, split arbitrage and hedge stakes, and price parlays and round robins.
How it works
Calculators in 3 steps
- 1
Pick a calculator
Start from the question you want answered.
- 2
Enter the prices
Use the right odds format and the stake you are considering.
- 3
Read the output
Separate profit from payout and compare the result with your bet.
FAQ
Common questions
Quick answers about Calculators.
Are the calculators free?
Yes. Every calculator is free and works without an account.
What's the difference between profit and payout?
Payout includes your returned stake. Profit subtracts it. At +150, a $100 winning bet pays $250, of which $150 is profit.
Related tools
All toolsPut Calculators to work
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