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Free Prefix Calculator | Evaluate Prefix (Polish) Notation Expressions


Note Make sure to add space after every inputs(+,-,/,*,A-B,a-z).
Result:
None

Examples:

  • + 3 4 → 3 + 4 = 7
  • * + 2 3 - 5 1 → (2+3)*(5-1) = 20
  • - * 5 6 7 → (5*6)-7 = 23
  • / * + 3 4 5 2 → ((3+4)*5)/2 = 17.5

Prefix notation (Polish notation) places the operator before its operands.


Evaluate prefix (Polish) notation expressions instantly with this free online calculator. Supports +, -, *, /, ^ operators and parentheses. Perfect for computer science students, programmers, and competitive exam preparation.

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