Scientific Calculator

Scientific Calculator – Description

This Scientific Calculator is a fast, accurate, and user-friendly online tool designed for students, teachers, and professionals. It supports basic arithmetic, trigonometric calculations, degree/radian modes, calculation history, and keyboard input, all in one compact interface.

The calculator works smoothly on desktop and mobile devices and is fully compatible with Google Sites embed.

    Features

• Basic Operations:
  Addition (+), Subtraction (−), Multiplication (×), Division (÷)

• Trigonometric Functions:
  sin, cos, tan (supports Degree & Radian modes)

• Smart Display:

  • Top display shows the full expression

  • Main display shows the current number or result

• Calculation History:

  • Automatically saves recent calculations

  • Click any history item to reuse the result

• Answer Memory:

  • Use Ans to recall the last calculated result

• Keyboard Support:

  • Use number keys (0–9)

  • Operators: + - * /

  • Enter key =

  • Backspace to delete digits

• Export Options:

  • Download calculation history as CSV

  • Download calculation history as TXT

• Clear Controls:

  • AC clears current input

  • ⌫ removes last digit

  • Clear History removes saved calculations

How to Use the Calculator

1️⃣ Enter Numbers

Click the number buttons or use your keyboard to enter values.

2️⃣ Perform Operations

Select any operator (+ − × ÷) to perform calculations.

3️⃣ Trigonometric Calculations

• Click sin, cos, or tan

• Enter the angle value

• Choose Deg (degrees) or Rad (radians)

• Press = to get the result

Example:
sin(30) in Deg mode → 0.5

4️⃣ Use Parentheses

Use ( ) to control calculation order for complex expressions.

5️⃣ View & Reuse History

• Scroll through the history panel
  Click any past result to load it again

6️⃣ Download History

• Download CSV → for spreadsheets

• Download TXT → for simple text records

Mobile Friendly

The calculator automatically adjusts its size for mobile screens while keeping all buttons and features accessible.

Notes

• Ensure JavaScript is enabled in your browser

• Trigonometric results depend on the selected Deg/Rad mode

• Very large or invalid expressions may return Error