This online scientific calculator is a powerful and intuitive tool designed for students, engineers, scientists, and math enthusiasts. It allows you to easily input complex mathematical expressions and get accurate results instantly. It is optimized for both desktop and mobile use, with full support for mouse or keyboard input.
Core Principles
Order of Operations (PEMDAS): The calculator follows the standard mathematical order of operations: Parentheses, Exponents, Multiplication/Division, and Addition/Subtraction. This ensures that complex expressions are evaluated correctly. Ex: 10 + 2 * 3 results in 16.
Angle Units (Radians): All trigonometric functions (sin, cos, tan) operate in Radians. If you need to calculate with degrees, you must convert them first (e.g., 90° = π/2 radians).
Error Handling: If you attempt a mathematically undefined operation, such as Division by zero or input a Syntax error, the display will show 'Error'. Simply press the AC key to reset.
Detailed Function Guide
Learn how to get the most out of your calculator with this guide to its features and functions.
1. Basic & Advanced Operations
Arithmetic (+, -, ×, ÷): Standard operations. For faster input, you can use your keyboard's number pad and operator keys.
Parentheses (): Use these to group expressions and force a specific order of operations. Ex: (3 + 5) * 2 equals 16.
Exponentiation (xʸ, ^): Raise a number to a power. Input as base ^ exponent. Ex: 2^3 = 8.
Square (x²): Quickly square a number. Ex: 5x² results in 25.
Square Root (√): Calculates the non-negative square root of a number. It is best practice to use parentheses. Ex: √(16) = 4.
2. Constants (π, e)
π (Pi): Represents the mathematical constant Pi (approx. 3.14159). Essential for calculations involving circles and periodic functions. Ex: π * 10^2 (Area of a circle with radius 10).
e (Euler's Number): Represents the base of the natural logarithm (approx. 2.71828). It is fundamental in calculus, compound interest, and more.
3. Trigonometric Functions (sin, cos, tan)
Used to model periodic phenomena and solve geometric problems. Note: All inputs are in Radians.
sin (Sine): Returns the ratio of a right triangle's opposite side to its hypotenuse. Ex: sin(π/2) = 1.
cos (Cosine): Returns the ratio of the adjacent side to the hypotenuse. Ex: cos(π) = -1.
tan (Tangent): Returns the ratio of the opposite side to the adjacent side. Ex: tan(π/4) = 1.
4. Logarithmic Functions (log, ln)
The inverse of exponentiation, useful for handling very large numbers and scaling data.
log (Common Log): The base-10 logarithm. Used in measuring sound intensity (decibels), earthquake magnitude (Richter scale), etc. Ex: log(100) = 2.
ln (Natural Log): The base-e logarithm. Widely used in models of natural phenomena like population growth or radioactive decay. Ex: ln(e^3) = 3.
5. Special Functions
Factorial (x!): The product of all positive integers up to a number. Used in combinatorics to find the number of permutations. Ex: 5! = 5 × 4 × 3 × 2 × 1 = 120.
Scientific Notation (EXP): A shorthand for writing very large or small numbers. You can use 'E' or 'e'. Ex: 3.5EXP6 is equivalent to 3.5 × 10⁶ or 3,500,000.