Scientific Calculator Online

How to Use the Scientific Calculator

1. Click number and operator buttons or use your keyboard to enter expressions.
2. Use the DEG/RAD toggle to switch between degree and radian mode for trigonometry.
3. Press INV to access inverse functions (arcsin, arccos, arctan, log base 10, etc.).
4. Use MR, M+, M-, MS, MC to store and recall values from memory across calculations.

Why Use a Browser Scientific Calculator

A scientific calculator handles the mathematical functions needed for algebra, trigonometry, statistics, physics, and engineering — far beyond the four-function arithmetic of a basic calculator. Having one accessible instantly in your browser means no searching for a physical calculator, no downloading an app, and no switching between programs when you need to verify a calculation mid-work.

The keyboard support makes it as fast as a physical calculator: press 2, *, π, Enter to calculate 2π without touching the mouse. The calculation history lets you review and reuse previous results by clicking on them, which is invaluable when working through multi-step problems where each calculation feeds into the next.

Frequently Asked Questions

• When should I use DEG vs RAD mode?
  Use DEG (degrees) for everyday angle calculations and most textbook problems. Use RAD (radians) for calculus, physics, and programming — most math libraries use radians by default.
• What is the maximum factorial supported?
  The calculator supports factorials up to 170! (the largest value representable as a JavaScript double-precision float before it becomes Infinity).
• What does the INV button do?
  INV toggles the functions to their inverse: sin→arcsin, cos→arccos, tan→arctan, log→10^x, ln→e^x, x²→√x.