Scientific Calculator
Mobile-friendly online scientific calculator with trigonometry, logarithms, powers, roots, factorials, and parentheses.
Safe Mathematical Expression Parser
Evaluates complex algebraic, trigonometric, logarithmic, and transcendental expressions using a recursive-descent parser adhering to operator precedence (PEMDAS/BODMAS) with zero security vulnerabilities.
Calculation Steps
- 1Tokenize the input expression into numeric literals, functions, and operators.
- 2Support angle modes: Degrees (DEG) and Radians (RAD) for sine, cosine, and tangent.
- 3Evaluate nested sub-expressions within parentheses recursively.
- 4Provide instant precision results with zero use of insecure JavaScript eval().
Practical Example
Scenario: Evaluate expression: 25 + sin(30 deg) * sqrt(16)
Inputs: Expression: 25 + sin(30) * sqrt(16) [Degree Mode]
Calculation: sin(30°) = 0.5 | sqrt(16) = 4 | 0.5 * 4 = 2 | 25 + 2 = 27
Result: Result: 27
Assumptions & Disclaimers
Key Assumptions:
- Trigonometric functions accept angles in degrees or radians based on user selection.
- Factorials are computed for non-negative integers.
Floating point rounding is performed at standard IEEE 754 double precision limits.
Frequently Asked Questions
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