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Betting calculators


Odds converter

Fractional:
Decimal:
American:

Cover bet

Same as what the "Draw No Bet" market does. The main selection is to deliver profit, the covering bet returns the stake if the main selection fails.

Total stake:
Odds for the main selection: Odds for the covering selection:
Stake on the main selection: Stake on the covering selection:
Total odds:

Double Chance

Total stake:
Odds for selection #1: Odds for selection #2:
Stake on selection #1: Stake on selection #2:
Total odds:

Kelly's Criterion

The Kelly's Criterion is a popular money management system, many articles about it can be found on Google. The first calculator uses its classic formula without any modifications - not recommended because spending too large % of the bankroll on a single bet. The 2nd calculator "Stake manager" is similar but keeping stakes at a more reasonable level. "Value" stands for the probability of your bet to win referred to the odds - e.g. if you think the chances of A to beat B are 52% and you have odds 2.00 that would be low value. If the odds are 2.40 then value is considered high.

Kelly's Criterion
Bankroll:
Odds:
Probability: %
Stake:

Stake Manager
Bankroll:
Odds:
Value:
Recommended stake:

Odds Payout / Estimation

Odds #1:
Odds #2:
Payout %:
Estimation #1 %:
Estimation #2 %:
Odds #1:
Odds #2:
Odds #3:
Payout %:
Estimation #1 %:
Estimation #2 %:
Estimation #3 %:

betfair

Winnings at the betfair exchange are shaved by commission so at the end users get less than what the displayed odds say. The calculators show what is actually paid and what would be the odds if counting the commission.

Back
Stake:
Backed odds:
Commission:
Discount rate %
Commission:
Net profit:
Real odds:
Lay
Liability:
Laid odds:
Commission:
Discount rate %
Backer's stake:
Commission:
Net profit:
"Back"odds*:

* The discount rate is reducing the commission charged by Betfair based on the user's activity, it can be seen in "My account ". Usually it is 0.
* "Back"odds - laying a bet is same as backing all other possible outcomes so these are the virtual odds (counting the commission) of backing everything than the laid bet. For example if the user can take 1.80 on Stoke +0.5 in some bookie he shouldn't lay 2.20 or more for their loss.