Calculators › Odds Converter

Odds Converter

Type odds in any format: American (-110, +150), decimal (1.91, 2.50), fractional (10/11, 3/2) or an implied probability (52.4%). The rest fill in.

The conversions

  • American to decimal: minus odds, 1 + 100 ÷ odds; plus odds, 1 + odds ÷ 100.
  • Decimal to American: 2.00 or more, (decimal − 1) × 100 with a plus sign; under 2.00, −100 ÷ (decimal − 1).
  • Fractional to decimal: the fraction plus 1. 3/2 is 2.50.
  • Implied probability: 1 ÷ decimal odds. 1.91 is 52.4%.

Common odds, every format

AmericanDecimalFractionalImplied
-3001.331/375.0%
-2001.501/266.7%
-1501.672/360.0%
-1101.9110/1152.4%
+1002.001/1 (evens)50.0%
+1502.503/240.0%
+2003.002/133.3%
+3004.003/125.0%
+5006.005/116.7%

Put it to work

The MC Sports model boards rank every player and game, every game day, and show the numbers behind each score.

See the model boards →