Moneyline to Spread Converter

Enter a moneyline odds value for both the favorite and underdog to see the equivalent point spread and implied win probabilities. Choose your league (NFL, NBA, NCAAF, or CFB), input the favorite moneyline and underdog moneyline, and get back the estimated point spread, each team's implied win percentage, and the spread edge for both sides.

Enter the favorite's moneyline odds (must be negative, e.g. -350)

Enter the underdog's moneyline odds (must be positive, e.g. +280)

The juice on the favorite's spread bet (typically -110)

The juice on the underdog's spread bet (typically -110)

Results

Estimated Point Spread

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Favorite Win %

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Underdog Win %

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Favorite Implied Probability

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Underdog Implied Probability

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Favorite Edge

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Underdog Edge

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Win Probability Breakdown

Frequently Asked Questions

What is a moneyline bet?

A moneyline bet is a wager on which team will win the game outright, with no point spread involved. Favorites are expressed with negative odds (e.g. -350), meaning you must risk $350 to win $100, while underdogs have positive odds (e.g. +280), meaning a $100 bet wins $280.

What is a point spread bet?

A point spread bet levels the playing field by giving the favorite a handicap. The favorite must win by more than the spread for you to win, while the underdog can lose by less than the spread (or win outright) and still cover. Most spread bets are priced at -110 on both sides.

How do you convert moneyline odds to a point spread?

To convert, you first calculate each team's implied win probability from the moneyline. The favorite's probability is used to map against historical data for a given league to estimate the corresponding point spread. For example, a -350 favorite in the NFL typically equates to roughly a 7-point spread.

Why would I want to convert moneyline to spread?

Converting between moneyline and spread helps you spot mispricings or value bets. If a sportsbook's moneyline implies a different win probability than their spread suggests, one side may offer better value. Bettors use this comparison to find edges across different bet types.

What is implied probability in sports betting?

Implied probability is the likelihood of an outcome as implied by the odds. For a -350 favorite, implied probability is 350/(350+100) = 77.8%. For a +280 underdog, it's 100/(280+100) = 26.3%. The combined implied probability usually exceeds 100% due to the sportsbook's vig (juice).

How is a point spread calculated?

Sportsbooks set point spreads based on team strength, injuries, home/away advantage, and public betting action. The spread is designed so that both sides attract roughly equal action. Historical data shows consistent relationships between spreads and moneyline odds for each league.

Does the conversion differ by league (NFL vs NBA vs NCAAF)?

Yes — the same moneyline odds translate to different spreads depending on the sport. In the NBA, scoring is high and spreads can be much larger, while NFL spreads are typically smaller. The mapping curves used in this calculator account for these league-specific differences.

What does 'edge' mean in spread betting?

Edge refers to the difference between the implied win probability from the moneyline and the win probability implied by the spread odds. A positive edge on the favorite means the moneyline suggests they're stronger than the spread indicates, which could represent a value opportunity.

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