This tool gives you a way to change between infix (seen normally in most writing) and post fix also known as reverse polish notation or Polish postfix notation which is used in some HP calculators such as the 9100A and HP-35.

Postfix notation is said to be harder to learn, but have several advantages when used on a calculator. It is both faster and less error prone than infix notation. You can read a lot more about the use and history of Reverse Polish Notation here.

The converter supports +.-.*. / and ^.

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