Scientific Calculator

Free scientific calculator to evaluate expressions with powers, square roots, and percentages.

Safe expression parser — no eval(). Supports +, −, ×, ÷, ^, sqrt(), and %.

Your inputs stay on your device

Scientific calculator

live result

Expression

Result

sqrt(144) + 5^2 = 37

Supported operations: + − × ÷ parentheses ^ (power) sqrt() % (percentage). Runs entirely in your browser — no external APIs.

Context & Reference

Calculators are most useful when their assumptions are clear. Review these details to better understand the logic behind the results.

The calculator tokenizes and evaluates supported arithmetic operators, parentheses, powers, square roots, and percentages safely.

Enter an expression using the displayed syntax, review the result, and adjust the expression as needed.

The result is the numeric value of the supported expression; invalid syntax receives a clear error.

sqrt(81) + 2^3 evaluates to 17.

Expressions are processed by a safe parser rather than JavaScript eval. Unsupported functions are not accepted.

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