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Free no-vig calculator
Convert each price to an implied chance, then scale the chances so they add to 100%. The simplest way divides each by the total; the power and odds ratio methods take proportionally more margin off long shots. Enter every outcome's price below and pick a method.
No-vig calculator
Method
Outcome 1 price
1.80
Fair price
1.86
Fair chance
53.85%
Outcome 2 price
2.10
Fair price
2.17
Fair chance
46.15%
With the 3.17% margin removed, the fair chances add up to 100%. A price is worth backing only if you believe it beats the fair price for that outcome. Methods differ most on long shots.
18+. Arithmetic on the prices you enter, not a tip or a prediction. Prices can move, and bets can be limited or voided, before both are placed. Gambling Help Online: 1800 858 858.
The live version
BetBank picks compares bookmaker prices with fair prices to list positive EV bets, so the margin removal is done for you.
Worked example. Prices of 1.80 and 2.10 add to 103.17%. Proportionally the fair chances are 53.85% and 46.15%, so the fair prices are 1.86 and 2.17, compared with 1.80 and 2.10 offered.
What it assumes. That the margin is spread the way the method says. The methods agree on an even market and differ on long shots, where there is no single correct answer. A fair price from one bookmaker is still that bookmaker's view, not a fact.
18+. These calculators do arithmetic on the numbers you enter; they are not tips or predictions. Gambling can be harmful. For free, confidential help call Gambling Help Online on 1800 858 858 or visit our responsible gambling page.
A no-vig price, or fair price, is a bookmaker's price with the margin taken out, so the chances of all outcomes add to exactly 100%.
Proportional is the simplest and easiest to explain. Power and odds ratio remove more margin from long shots, which tends to match the favourite-longshot pattern in many markets. For an even two-way market they give almost the same answer.
It is a better estimate than the raw price, and it is the usual starting point for finding value, but it is still one bookmaker's opinion. A sharp bookmaker's no-vig price is generally treated as more reliable than a soft one's.
Yes. Add an outcome for each result, for example home, draw and away, or every runner in a race.
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