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No-vig calculator

Enter both sides of a two-way market to remove the book’s margin and see the fair odds.

1.667 decimal · 60.00% implied
2.30 decimal · 43.48% implied
Fair odds
Side A−13857.98% fair
Side B+13842.02% fair
Book’s hold3.36%
Implied total, with vig103.48%

No-vig calculator FAQ

What is the vig?

The margin a book builds into its prices, also called juice. It’s why both sides of a market imply more than 100% together.

What is hold?

The share of the money wagered that the book keeps if action is balanced on both sides. Lower hold means a cheaper market.

Which method does this calculator use?

The multiplicative method: each side’s implied probability divided by the total. Other methods, such as additive or power, give slightly different results on lopsided markets.

Does it work for three-way markets?

Not yet. It’s built for two-way markets such as spreads, totals and moneylines with no draw.

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Every bet, already researched

EdgHouse is the research app for bettors who want to think for themselves.

Start 7-Day Free Trial
Download on the App StoreGet it on Google Play

No charge until day 8. Cancel anytime.

Every bet, already researched

EdgHouse is the research app for bettors who want to think for themselves.

Start 7-Day Free TrialDownload on the App StoreGet it on Google Play

No charge until day 8. Cancel anytime.

How it’s calculated

The two implied probabilities add up to more than 100%. Scaling them back to 100% removes the margin.

The formula

Implied probability
1 ÷ decimal, for each side
Total
side A + side B
Fair probability
side’s implied ÷ total
Hold
1 − 1 ÷ total

Worked example

  1. 1−150 and +130, as implied probabilities60.00% and 43.48%
  2. 2Total60.00% + 43.48% = 103.48%
  3. 3Fair probabilities57.98% and 42.02%
  4. 4Fair odds−138 and +138
  5. 5Hold1 − 1 ÷ 1.0348 = 3.36%