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Free online math expression evaluator and calculator. Evaluate complex mathematical expressions with support for functions and variables.
+Addition-Subtraction*Multiplication/Division^Power%Modulosqrt(x)Square rootabs(x)Absolute valuesin(x)Sinecos(x)Cosinetan(x)Tangentlog(x)Log base 10ln(x)Natural logpiPi constanteEuler's numbern!FactorialAll calculations are done client-side. Your data never leaves your browser.
Evaluate mathematical expressions with support for basic operators (+, -, *, /, ^, %), functions (sqrt, abs, sin, cos, tan, log, ln, floor, ceil, round), constants (pi, e), and factorial. Includes a history of previous calculations and quick-access example expressions.
Performing quick math calculations with functions and constants is cumbersome in standard calculators; this tool provides a developer-friendly interface that supports programming-style math expressions with immediate results and history.
Developers, students, engineers, and anyone who needs to quickly evaluate mathematical expressions with functions and constants without opening a full calculator application.
Type a mathematical expression into the input field (e.g., 2 * (3 + 4) / 7)
Press Enter or click the Evaluate button to compute the result
The result is displayed below the input with full precision
Click any example expression to load and evaluate it instantly
Click any history entry to reload that expression for re-evaluation
Use the function reference panel to see all supported operations
2 * (3 + 4) / 7 → 2sqrt(144) + 3^2 → 21sin(pi / 2) + cos(0) → 25! → 120abs(-42) * log(100) → 84Standard mathematical order: parentheses first, then exponents, then multiplication/division, then addition/subtraction.
No, this tool evaluates pure mathematical expressions only. Use a programming environment for variable-based calculations.
Trigonometric functions use radians. Use sin(pi/2) for the sine of 90 degrees.
The evaluator will return an error message indicating the expression is invalid.
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