A $2 win bet at 40/1 pays $82.00: $80.00 profit plus your $2 stake back. A $1 bet returns $41.00, $10 returns $410.00 and $100 returns $4,100.00. 40/1 is decimal 41.00, American +4000, with a raw implied probability of 2.4%.

40/1 payout by bet size

Win bet returns at 40/1. Total return includes the stake; payoffs use 10-cent breakage on a $1 basis.
Win betTotal returnProfit
$1$41.00$40.00
$2$82.00$80.00
$5$205.00$200.00
$10$410.00$400.00
$20$820.00$800.00
$50$2,050.00$2,000.00
$100$4,100.00$4,000.00

How to read 40/1 odds

Read fractional odds as profit over stake. 40/1 (40 to 1) means a winning bet earns $40 for every $1 staked. On a $2 bet that is $2 × 40 ÷ 1 = $80.00 profit, and the track returns your $2 as well, for $82.00 in total. 40/1 is odds-against: a winning bet returns more than double the stake. A longer price reflects how the betting pool rates the horse, not whether it is good value.

40/1 converted: decimal, American and probability

  • Decimal odds: 41.00 (1 + 40 ÷ 1). Multiply by your stake for the total return.
  • American odds: +4000.
  • Raw implied probability: 2.4% (1 ÷ 41). Because the track takes its share before paying winners, the implied percentages of every horse in a race add up to more than 100%, so this is a description of the price, not the horse's true chance.

Why the real payout can differ

Tote boards round the displayed odds down to the standard increments, so a horse shown at 40/1 can actually be a little longer. Its real $2 payout can be anywhere from $82.00 up to just under $102.00, the payout at the next price on the board (50/1). Payoffs are also rounded down to the dime (breakage), and the price keeps moving until betting closes. Treat every figure here as approximate; the official payoff is the one the track posts after the race.

Nearby prices

Is 40/1 a good price?

A payout tells you what a winning ticket returns; it does not tell you whether the bet is worth making. That depends on how likely you think the horse is to win compared with what 40/1 implies. To test a price against your own estimate, use the fair odds calculator, or run the race through GAMELIN, which separates a projected winner from the BET or PASS price test. Passing is a valid decision.

For any price or stake not shown here, use the horse racing betting calculator. Bet only within a limit you set before the race; if it stops being fun, see responsible play or call 1-800-MY-RESET.

Common questions

What does 40/1 pay on a $2 bet?

$82.00 in total if the horse wins: $80.00 profit plus your $2 stake back. 40/1 is decimal 41.00, and a $2 win bet returns 41.00 × $2 rounded down to the dime.

What does 40/1 pay on a $10 bet?

$410.00 in total, or $400.00 profit. A $1 bet at 40/1 returns $41.00, so a $10 bet returns ten times that.

What does 40/1 pay on a $100 bet?

$4,100.00 in total, or $4,000.00 profit, if the horse wins at exactly 40/1. Pari-mutuel odds keep moving until betting closes, so the final price can differ.

What does 40/1 mean in horse racing?

40/1, said "40 to 1", means 40 dollars of profit for every 1 dollars staked if the horse wins. It converts to American odds of +4000 and implies a raw probability of 2.4% before allowing for the track's share of the pool.

Is 40/1 the final payout?

Not necessarily. The odds shown before a race are an estimate that keeps changing as money comes in, the board rounds odds to standard increments, and payoffs are rounded down to the dime. The official payoff is posted after the race.

Related calculators

Each tool answers one arithmetic question with your inputs. None of them predicts a payout, picks a horse or qualifies a GAMELIN BET.

Sources and scope

Official references and GAMELIN's published evidence. Check current track and operator information before acting.