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Calculators
Lucky 15 Calculator: Work Out a Lucky 15, Yankee or Trixie
Work out a Lucky 15 line by line: win or each-way returns, place terms, one-winner and all-winner results, plus how Trixie, Patent, Yankee, Heinz and Goliath bets are built.
Betting Calculators: Odds, Parlay, Lucky 15 and More
Type in a price and a stake and the calculators show your return straight away. They accept fractional (5/2), decimal (3.50) and American (+250) odds, and each page explains the formula behind the numbers so you can check a bookmaker's settlement yourself.
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Calculators
Teaser Calculator: Break-Even Rate per Leg and Payout
Enter a teaser price, the number of legs and a stake to see the ticket's break-even rate, how often each leg has to win and what the teaser returns if every leg wins.
Calculators
Kelly Criterion Calculator: Size Your Stake From Your Edge
Enter the odds, your own win probability and your bankroll to see your edge, the full Kelly stake and a smaller half or quarter Kelly stake, with worked examples.
Calculators
Round Robin Calculator: How a Round Robin Bet Works
Work out how many bets a round robin creates, what it costs and what it pays after a loss or a push, and see how a round robin bet compares with one big parlay.
Calculators
Hedge Calculator: Lock In a Profit or Get Your Stake Back
Work out the hedge stake that locks in the same profit whichever side wins, or the smaller stake that only returns your money, for futures, parlays and tennis finals.
Calculators
No-Vig Calculator: Remove the Margin and Find Fair Odds
Strip the bookmaker's margin out of a two-way or three-way market and see the fair probability and fair odds of each outcome, with the formula and worked examples.
Calculators
Each Way Calculator: Work Out Your Each-Way Returns
Enter the odds, stake per part and place terms, and the each way calculator shows the total staked, the return and the profit if your selection wins, places or loses.
Calculators
Parlay Calculator: Work Out Parlay and Acca Payouts
Add up to 20 selections in any odds format and the parlay calculator shows the combined odds, implied probability, total return and profit for parlays and accas.
Calculators
Odds Calculator: Convert Odds and Work Out Your Return
Convert fractional, decimal and American odds, see the implied probability and work out the total return and profit on any stake with the odds calculator.
Each calculator does one job and shows the formula behind its answer, so you can check a bookmaker's settlement yourself. They run in your browser and do not save what you type.
Prices and returns
- Odds calculator: converts between fractional, decimal and American odds, shows the implied probability and works out the return on a stake.
- Parlay calculator: multiplies the legs of a parlay or accumulator. A leg that is voided or pushes counts at odds of 1.00, so leave it out and the result is the same.
- Each-way calculator: splits an each-way stake into its win and place parts and shows the return for a win, a place or a loss.
- Lucky 15 calculator: works out Lucky 15, Yankee, Trixie and the other full-cover system bets, win only or each-way, with a result for each selection.
- Round robin calculator: builds every parlay of the size you choose from three to eight picks, with a won, lost or push result for each leg.
Value and staking
- No-vig calculator: removes the bookmaker's margin from a two- or three-way market and shows the fair probability and fair odds of each outcome.
- Kelly criterion calculator: turns your own probability estimate into a stake as a share of your bankroll, at full, half or quarter Kelly.
- Hedge calculator: works out the stake on the other side that locks in the same profit either way, and the smallest hedge that avoids a loss.
- Teaser calculator: shows the break-even rate of a teaser ticket and how often each leg has to cover.
Behind the numbers
The calculators follow the same maths as our guides. If a result surprises you, read how betting odds work for the conversions, implied probability for the margin, and bankroll management before you size a stake. Bookmakers can round returns slightly differently, so a difference of a penny or a cent is normal.