Expression Evaluator

Evaluate mathematical expressions

Expression

Supported: +, -, *, /, ^, (), sin, cos, tan, sqrt, log, exp, pi

How to Evaluate Mathematical Expressions

Enter Your Expression

Type any mathematical expression using numbers, operators, and functions.

Click Evaluate

The calculator parses and computes your expression following order of operations.

View the Result

Get instant results with error detection for invalid expressions.

Features of This Expression Calculator

✓Multiple Operations

Supports addition, subtraction, multiplication, division, and exponentiation in one expression.

✓Trigonometric Functions

Calculate sin, cos, and tan values for angles in your expressions.

✓Scientific Functions

Includes sqrt, log, exp, and pi constants for advanced calculations.

✓Parentheses Support

Use nested parentheses to control order of operations precisely.

✓Error Detection

Identifies and reports invalid expressions with clear error messages.

Supported Operations Reference

Basic Operators:

• + Addition
• - Subtraction
• * Multiplication
• / Division
• ^ Exponentiation
• () Parentheses

Functions & Constants:

• sin(x) Sine
• cos(x) Cosine
• tan(x) Tangent
• sqrt(x) Square root
• log(x) Natural log
• pi (3.14159...)

Example Expressions:

• (5 + 3) * 2 = 16
• 2^3 + 4 = 12
• sqrt(144) = 12
• sin(pi/2) = 1
• log(exp(1)) = 1

Frequently Asked Questions

What order of operations does this calculator use?

Standard PEMDAS/BODMAS: Parentheses first, then Exponents, then Multiplication/Division (left to right), then Addition/Subtraction (left to right).

Can I use decimal numbers?

Yes, decimal numbers are fully supported. Enter values like 3.14, 0.5, or 2.718 for precise calculations.

Are trigonometric functions in degrees or radians?

Trigonometric functions use radians. To convert degrees to radians, multiply by pi/180.

What does the ^ symbol mean?

The ^ symbol represents exponentiation (power). For example, 2^3 means 2 raised to the power of 3, which equals 8.

Why am I getting an error?

Common errors include unmatched parentheses, invalid characters, division by zero, or malformed function syntax. Check your expression carefully.

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