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Odds Converter

Convert decimal, fractional, American and implied probability values.

How to use this calculator

How to use the Odds Converter

Use this odds converter to switch between decimal, fractional, American odds and implied probability for cleaner betting comparisons.

  1. Choose the input type you currently have.
  2. Enter the value in that format, for example 6/4 or +150.
  3. Read converted decimal, fractional and American outputs.
  4. Use implied probability to compare value between bookmakers.
  5. Repeat quickly to validate prices before placing bets.

This betting odds converter helps matched bettors and sports bettors convert odds formats accurately and compare implied probability across markets.

Decimal 2.500

Fractional 3/2

American +150

Implied probability 40.00%

Total offer value

What these offers are worth

If you complete all the offers listed below, you would make approximately this amount.

Total Value

£618.95

Beginner Value

£259.95

14 offers

Intermediate Value

£355.50

22 offers

Pro Value

£3.50

1 offer

Beginner Offers

Straightforward bet-and-get offers that are the easiest to match and usually give the cleanest conversion.

14 offers

Intermediate Offers

Offers that often force bet builders or accas, so they need more judgment and usually convert at a lower rate.

22 offers

Pro Offers

Higher-variance or awkward promos that are usually better suited to experienced matched bettors or advantage play users.

1 offer