Scientific Calculator – Advanced Math Online
Our free online scientific calculator lets you evaluate complex mathematical expressions instantly, supporting trigonometry, logarithms, exponents, roots, and more. Whether you're a student, engineer, or scientist, this tool handles advanced math without needing a physical calculator. Simply type your expression and get an accurate result in seconds.
Enter a math expression using functions like sin, cos, tan, log, ln, sqrt, abs, pow, pi, e. Angles in degrees.
Select whether trigonometric functions use degrees or radians.
Choose how many decimal places to display in the result.
Your results will appear here
How to Use This Calculator
1. Type your mathematical expression into the Expression field. You can use functions like sin(), cos(), tan(), log(), ln(), sqrt(), abs(), pow(), and constants like pi and e. 2. Select whether you want angles interpreted in Degrees or Radians using the Angle Unit selector. 3. Choose your desired number of decimal places from the Decimal Places dropdown. 4. Click Calculate to instantly see the Result, the evaluated expression, and the value in scientific notation.
How the Scientific Calculator Works
This calculator parses your mathematical expression and evaluates it using JavaScript's built-in Math library. It supports a wide range of functions and constants commonly used in science, engineering, and mathematics.
Supported Functions and Constants
Trigonometric Functions
- sin(x) – Sine of x
- cos(x) – Cosine of x
- tan(x) – Tangent of x
- asin(x) – Arcsine of x
- acos(x) – Arccosine of x
- atan(x) – Arctangent of x
Logarithmic and Exponential Functions
- log(x) – Base-10 logarithm of x
- ln(x) – Natural logarithm (base e) of x
- exp(x) – e raised to the power x
- pow(x, y) – x raised to the power y (can also use ^ or **)
Other Functions
- sqrt(x) – Square root of x
- abs(x) – Absolute value of x
- ceil(x) – Round up to nearest integer
- floor(x) – Round down to nearest integer
- round(x) – Round to nearest integer
Constants
- pi – π ≈ 3.14159265358979
- e – Euler's number ≈ 2.71828182845905
Degrees vs. Radians
Trigonometric functions can operate in either degrees or radians. In degree mode, an input of sin(90) returns 1. In radian mode, sin(pi/2) also returns 1. Choose the angle unit that matches your problem's requirements.
Scientific Notation
Very large or very small numbers are best expressed in scientific notation, where a number is written as a coefficient multiplied by a power of ten (e.g., 1.23 × 10⁶). The calculator automatically displays results in both standard and scientific notation for convenience.