Internet Explorer support ending

As of January 1st, 2020, PlayNow.com no longer provides browser support for IE 11. If you choose to use IE 11 we cannot guarantee you will be able to login or use the site. We advise you switch to the latest version of either Edge, Firefox or Chrome.

Odds calculator tool

Learn how to calculate the betting odds with our free odds calculator tool - designed to let you check what your potential return might be depending on the value of your wager, the odds and the type of bet.

An introduction to our odds calculator

Everything you need to know about how to use the odds calculator features and how to input your bets and quickly find the potential return on any odds.

Enter your bet amount and your preferred odds format and the tool will automatically calculate all formats of the odds. At PlayNow we use decimal odds as our default, but it’s completely up to you which you prefer. When you are ready to make your bets all the calculations are done for you.

PlayNow tip: Want to learn more about decimal and American odds? Read our introductory guide to understanding the odds.

Odds conversion table

See how the different formats of odds line up and how you can convert betting odds from one format to another.

Decimal Odds	Fractional Odds	American Odds	Closest-to-True Probability (%)
1.50	1/2	-200	66.67
2.00	1/1 (Evens)	+100	50.00
2.50	3/2	+150	40.00
3.00	2/1	+200	33.33
4.00	3/1	+300	25.00
5.00	4/1	+400	20.00
6.00	5/1	+500	16.67
7.00	6/1	+600	14.29
10.00	9/1	+900	10.00
21.00	20/1	+2000	4.76
101.00	100/1	+10000	0.99