Free Online Scientific Calculator

What is a Scientific Calculator?

A scientific calculator is a type of electronic calculator, usually but not always handheld, designed to calculate problems in science, engineering, and mathematics. They have largely replaced slide rules in traditional applications, and are widely used in both education and professional settings. Scientific calculators can perform a wide range of mathematical operations beyond basic arithmetic (+, -, ×, ÷), including trigonometric functions, logarithms, exponentials, roots, factorials, and more.

Why Use Our Free Online Scientific Calculator?

• Advanced Functions: Access trigonometric (sin, cos, tan), logarithmic (log, ln), exponential (e^x, x^y), square root, factorial, and absolute value functions.
• Constants: Easily use mathematical constants like Pi (π) and Euler's number (e).
• Parentheses for Order of Operations: Control the order of calculations with parentheses.
• User-Friendly Interface: Clear display and intuitively laid out buttons for easy operation.
• Responsive Design: Works well on desktops, tablets, and smartphones.
• No Installation Required: Use it directly in your web browser anytime, anywhere.
• Calculation History (Download): Download a record of your recent calculations.

How to Use the Scientific Calculator

• Input Numbers: Click the number buttons (0-9) and the decimal point (.) to enter numbers.
• Basic Operations: Use the , , , , and % buttons for arithmetic.
• Scientific Functions:
  • Click function buttons like `sin`, `cos`, `tan`, `log`, `ln`, `√`, `x<sup>y</sup>` (power), `x!` (factorial), `|x|` (absolute).
  • Most functions will open a parenthesis `(` automatically; enter the number or expression, then close with `)`. For example, `sin(30)` or `log(100)`.
  • For `x<sup>y</sup>`, you might enter `number1 Math.pow( number2 )`. Example: `2 Math.pow( 3 )` for 2³. (The button click should handle the `Math.pow(` part).
• Parentheses: Use `(` and `)` to group operations and control the order of calculation.
• Equals: Click the button to evaluate the current expression.
• Clear (C): Clears the entire current input and expression.
• Clear Entry (CE/Backspace): Clears the last entered digit or operator from the current input. Some calculators use CE for current entry and a backspace icon for single digit removal. We'll use CE as backspace for simplicity.
• +/- (Toggle Sign): Changes the sign of the current number.
• Constants: Click `π` or `e` to insert these values.
• Download History: After performing calculations, click "Download History" to save a text file of your operations and results.