Scientific Calculator
A full-featured scientific calculator with trigonometric, logarithmic, power and root functions, plus full keyboard support.
Calculator
Quick Summary
This scientific calculator supports trigonometric functions (sin, cos, tan), logarithms (log, ln), square roots, powers, factorials, π, e and parentheses for complex expressions.
Switch between DEG and RAD modes for trigonometric calculations, and use your keyboard for fast input.
How to Use This Calculator
- Type or tap your expression using the keypad.
- Switch between DEG and RAD for trigonometric functions if needed.
- Press = to evaluate the expression instantly.
What is a Scientific Calculator?
A scientific calculator is a tool designed to evaluate complex mathematical expressions beyond basic arithmetic. It supports trigonometric functions, logarithms, exponents, roots, factorials and constants such as π and e, making it useful for students, engineers and professionals.
This calculator allows you to type expressions using parentheses for correct order of operations, and supports both degree and radian modes for trigonometric calculations.
Supported Functions
sin, cos, tan — trigonometric functions (use DEG or RAD mode)
log — base-10 logarithm
ln — natural logarithm (base e)
sqrt — square root
^ — power (e.g. 2^3 = 8)
! — factorial (e.g. 5! = 120)
π and e — mathematical constants
( ) — parentheses for grouping expressions
Worked Example
Expression: sin(30) + sqrt(16) ÷ 2
In DEG mode, sin(30) = 0.5
sqrt(16) ÷ 2 = 4 ÷ 2 = 2
Result = 0.5 + 2 = 2.5
Keyboard Support
Number keys 0-9 enter digits. The + − × ÷ symbols can be typed using +, -, *, / respectively. Press Enter or = to calculate, Backspace to delete the last character, and Escape or C to clear the calculator.
Parentheses can be typed using ( and ) directly from the keyboard, and the decimal point uses the period key.
Benefits
- Perform advanced calculations instantly.
- Switch between degree and radian modes.
- Use parentheses for accurate order of operations.
- Full keyboard support for fast input.
- Responsive design works on mobile and desktop.
Practical Use Cases
- Solving trigonometry, logarithm or exponent problems while doing homework or revision.
- Double-checking manual calculations for a physics, maths or engineering assignment.
Common Mistakes to Avoid
- Leaving the calculator in the wrong angle mode (DEG vs RAD) for trigonometric functions — this is the most common source of wrong answers.
- Missing a closing parenthesis in a long expression, which changes the order of operations unexpectedly.
- Forgetting operator precedence — multiplication/division happens before addition/subtraction unless parentheses say otherwise.
Frequently Asked Questions
DEG mode interprets trigonometric inputs as degrees, while RAD mode interprets them as radians. Most everyday calculations use degrees, while advanced math and physics often use radians.
Use the x^y button or the caret symbol to raise a number to a power, for example 2^3 equals 8. Use the √ button for square roots, for example sqrt(16) equals 4.
Yes. The calculator supports full keyboard input including numbers, operators, parentheses, Enter for equals, Backspace for deleting, and Escape for clearing.
If the expression cannot be evaluated, the calculator displays an error message in the result area. You can clear the input and try again.