The Arbitrage/Dutching Calculator is a unique and powerful tool. It is actually 2 tools in one, with complicated mathematical formulas behind the simple and pleasant interface. Use the Home icon to return to the main menu and the Clear icon to delete all the data and start over.

The screenshot above shows the use of the calculator in football arbitrage scenario. First the number of outcomes is selected, and the liability (the total amount to be wagered). Then the calculator will tell you with green colour which cells require input - when you fill all of them, hit Enter and see if arbitrage is possible with these odds. If there is an arbitrage scenario, the Net Win will be a positive number (green coloured) and the Book will be less then 100% (green coloured). Actual Odds will be displayed - those reflect the gross wager/win ratio, in decimal format.

If there is no arbitrage situation, the above screenshot will appear, same as the previous one, only this time note the red coloured cells.

The above screenshots shows the use of the very same tool for dutching (up to 10 horses in horse racing, for example). Again, green cells should be filled and only then the table will display the desired information, the exact amount that should be wagered on any of the selections will be displayed. And again, if no dutching is possible (because of low odds or too many selections), the table will show it with red coloured numbers.

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