Sports Betting
Odds Converter
Convert between American (moneyline), decimal, fractional odds and implied probability. Instantly see your potential payout for any stake. Built for bettors at New Mexico tribal sportsbooks.
Enter any format — get the rest instantly
Type in any one field. The other formats and your payout update live. Default stake is $100 — change it to see your actual return.
Reading sportsbook odds
American odds (most common in NM)
Positive numbers like +150 mean a $100 bet returns $150 profit. Negative numbers like -150 mean you must risk $150 to win $100 profit. All five NM tribal sportsbooks post odds in American format.
Decimal odds (easiest to multiply)
The decimal figure is your total return per $1 staked, including your stake. 2.50 means a $1 bet returns $2.50 ($1.50 profit + $1 stake back). Useful for parlay math — just multiply each leg.
Fractional odds (UK / horse racing)
Written as 3/2 or 5/1. Means: bet the denominator to win the numerator. Common at NM racinos like Sunland Park and Ruidoso Downs.
Implied probability (the value check)
The win chance baked into the odds. If a sportsbook prices a moneyline at -150 (60% implied), but you think the real chance is 70%, that is a value bet. Compare your own probability estimate to the implied to find edges.
Frequently Asked Questions
What are American odds?
American odds (also called moneyline odds) are the standard format used at New Mexico sportsbooks. Positive numbers (+150) show how much profit you make on a $100 bet. Negative numbers (-150) show how much you must wager to win $100 in profit.
How do I convert American to decimal odds?
For positive American odds, divide by 100 and add 1. +150 becomes (150/100) + 1 = 2.50. For negative American odds, divide 100 by the absolute value and add 1. -150 becomes (100/150) + 1 ≈ 1.67. Decimal odds multiplied by your stake equal your total return (stake + profit).
What is implied probability?
Implied probability is the win percentage that a sportsbook's odds suggest for a given outcome. A +150 moneyline implies a 40% chance of winning. A -150 implies 60%. If you believe the true probability is higher than the implied probability, you may have a value bet.
Why do the implied probabilities of both sides add up to more than 100%?
The extra percentage is the sportsbook's vig (also called juice, margin, or overround) — built-in profit margin. On a typical -110/-110 NFL spread, both sides imply 52.4%, summing to 104.8%. That 4.8% over 100% is the vig the sportsbook keeps regardless of outcome.
Are the odds at NM tribal sportsbooks better at Isleta (BetMGM) or USBookmaking books?
BetMGM at Isleta Resort typically posts the most competitive odds in NM, especially on player props and same-game parlays. USBookmaking-powered books (Santa Ana Star, Buffalo Thunder, Route 66) and William Hill at Inn of the Mountain Gods are reliable but tend to have slightly higher vig on prop markets.