All Betting Calculators
Twenty-seven free calculators, sorted by the job they do. Every one works in naira, runs in your browser and needs no account.
Everyday calculators
Returns, odds and the maths behind a single bet or an acca.
7 toolsBet CalculatorSingles, doubles, accas and every full-cover bet from Trixie to Goliath, with won, lost and void legs.All bet typesAccumulator CalculatorTotal odds, return and profit of a multiple, plus the acca bonus and the chance that every leg lands.Up to 20 legsOdds ConverterDecimal, fractional and American odds, and the implied probability, converted as you type.4 formatsFractional Odds CalculatorWhat a price like 5/2, 10/1 or 50/1 pays on your naira stake, in decimal terms too.5/2, 50/1Margin CalculatorHow much the bookmaker keeps on a market, and the fair odds once the margin is taken out.OverroundExpected Value CalculatorThe average profit or loss of a bet from the odds and your own estimate of the chance.EVAsian Handicap CalculatorHow whole, half and quarter handicap lines settle on the final score: win, half win, push or loss.Quarter lines
Bonuses, trading and staking
Free bets, rollover, laying, hedging, cash out and how much to stake.
9 toolsFree Bet CalculatorThe return of a free bet when the stake is or is not given back, and its average value at the odds.SNR and SRRollover CalculatorHow much you must stake to clear a bonus, how many bets that takes and what it costs on average.WageringMatched Betting CalculatorLay stake, liability and the result either way for qualifying bets and free bets.Back and layLay Bet CalculatorYour liability and profit when you bet against a selection on a betting exchange.LiabilityHedge Bet CalculatorThe stake on the other side that locks the same profit whatever happens.Lock profitCash Out CalculatorThe fair value of your open bet at today's odds, next to what the bookmaker is offering.Fair valueArbitrage CalculatorStakes for a surebet across bookmakers on 2-way and 3-way markets, and the profit it locks.SurebetsDutching CalculatorSplit one stake across several picks so that any winner pays the same amount.Up to 6 picksKelly CalculatorHow much of your bankroll the Kelly criterion says to stake when you have an edge.Staking
System and full-cover bets
Every combination of your picks, from a Trixie to a Goliath.
11 toolsSystem Bet CalculatorPick 3 to 10 selections and any combination sizes: 2/3, 3/5, 4/6 and mixed systems.Any X/NTrixie CalculatorThree doubles and a treble on 3 selections. Two winners are enough for a return.3 picks · 4 betsPatent CalculatorA Trixie plus three singles: one winner already returns something.3 picks · 7 betsYankee CalculatorSix doubles, four trebles and a fourfold on 4 selections.4 picks · 11 betsLucky 15 CalculatorA Yankee with four singles added, so a single winner pays.4 picks · 15 betsSuper Yankee CalculatorEvery double, treble, fourfold and the fivefold on 5 selections. Also called a Canadian.5 picks · 26 betsLucky 31 CalculatorA Super Yankee plus five singles on 5 selections.5 picks · 31 betsHeinz Calculator57 bets from doubles to the sixfold on 6 selections.6 picks · 57 betsLucky 63 CalculatorA Heinz plus six singles: every possible bet on 6 selections.6 picks · 63 betsSuper Heinz Calculator120 bets from doubles to the sevenfold on 7 selections.7 picks · 120 betsGoliath Calculator247 bets from doubles to the eightfold on 8 selections.8 picks · 247 bets
Which calculator for which question
| Your question | Calculator |
|---|---|
| What does my slip pay? | Bet calculator |
| What are my acca odds and bonus? | Accumulator calculator |
| What is 5/2 or +150 in decimal? | Odds converter |
| How much does the bookmaker keep? | Margin calculator |
| Is this price worth taking? | Expected value calculator |
| How did my handicap bet settle? | Asian handicap calculator |
| What is my free bet worth? | Free bet calculator |
| Can I clear this bonus? | Rollover calculator |
| How much do I lay? | Matched betting calculator |
| Should I take the cash out? | Cash out calculator |
| How do I lock in a profit? | Hedge bet calculator |
| How much should I stake? | Kelly calculator |
| How many bets is my system? | System bet calculator |
Calculators FAQ
Are the calculators free?
Yes, all of them, with no sign-up and no limits.
Do you save what I type?
No. The numbers stay in your browser and disappear when you close the page.
Can I trust the results?
The formulas are public on our how we calculate page. Your bookmaker's own settlement rules always decide the final payout.
Is there a calculator you do not have?
Tell us on the contact page. We add tools that punters ask for.