Calculator
Moneyline calculator — instant payout, decimal, and implied probability
Type any American moneyline price. See exact profit on any stake, the decimal equivalent, and the implied win probability the book is charging you.
How moneylines work
A moneyline is the simplest bet in sports: you pick which side wins outright. The price is quoted as American odds — negative for favorites (the amount you risk to win $100) and positive for underdogs (the amount you win on $100 risked).
There's no point spread, no margin of victory. A $1 win is a win.
The formulas
Profit on a positive moneyline (+150): stake × (american / 100). $100 at +150 → $150 profit.
Profit on a negative moneyline (-150): stake × (100 / |american|). $150 at -150 → $100 profit.
Total payout always equals stake + profit. Implied probability = 1 / decimal odds.
What 'fair' moneyline pricing looks like
Sum the implied probabilities of both moneylines in a market. A vig-free price would sum to 100%. Most US books charge 4–6% vig on moneylines — meaning a -110 / -110 pick'em sums to 104.76%.
When shopping moneylines, compare the same matchup across multiple books. Even tiny differences (-145 vs -160) compound enormously across hundreds of wagers.
Frequently asked questions
How is a moneyline payout calculated?
For positive odds (+150): profit = stake × (american / 100). For negative odds (-150): profit = stake × (100 / |american|). Total return is profit plus stake.
What does -150 moneyline mean?
-150 means you must risk $150 to win $100 in profit. Implied probability is 60% (1 / 1.667 decimal).
What does +150 moneyline mean?
+150 means a $100 stake returns $150 in profit (plus your stake back). Implied probability is 40%.
How do I convert moneyline to decimal?
Positive: decimal = american/100 + 1. Negative: decimal = 100/|american| + 1. So +150 → 2.50 and -150 → 1.667.
Are moneyline bets better than spread bets?
Neither is inherently better. Moneylines reward picking winners outright; spreads narrow the margin. Pick whichever line offers more EV vs your true probability estimate.