Convert -400 to Decimal Odds (1.25)

American
-400
Decimal
1.25
Fractional
1/4
Implied Prob.
80.0%

Payout Table — -400 Odds

Bet SizeProfitTotal Payout
$10.00+$2.50$12.50
$25.00+$6.25$31.25
$50.00+$12.50$62.50
$100.00+$25.00$125.00
$250.00+$62.50$312.50
$500.00+$125.00$625.00

What Does -400 Mean?

An extreme favorite. At -400, the implied probability is 80%. Common on heavy tennis favorites and boxing mismatches. Poor value as a standalone bet — often used in parlays.

At -400 odds, the implied probability is 80.0%. A $100 bet returns $125.00 total — that's $25.00 profit plus your $100 stake.

In decimal format, -400 equals 1.25. In fractional format, it's 1/4. And in American format, it's -400.

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Frequently Asked Questions

What is -400 in decimal odds?
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-400 American odds equals 1.25 in decimal odds. This means a $1 bet returns $1.25 total (including your original stake).
What is the implied probability of -400 odds?
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-400 American odds imply a 80.0% chance of winning. This is the break-even win rate before any vig adjustment.
How much do I win on a $100 bet at -400?
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A $100 bet at -400 pays $125.00 total — that's $25.00 profit plus your $100 stake back.
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