Scientific Calculator
Use the keypad or your keyboard to evaluate expressions with standard arithmetic, parentheses, powers, roots, logarithms and trigonometric functions.
0
You can also type directly using your keyboard, and press Enter to evaluate.
How It Works
Expressions are parsed and evaluated directly (not sent to a server), following standard operator precedence: parentheses and functions first, then powers, then multiplication and division, then addition and subtraction. Trigonometric functions take input in degrees.
Formula
Supports + − × ÷ ^ (power), √ (square root), log (base 10), ln (natural log), sin, cos, tan, and the constants π and e.
Example
sin(30) evaluates to 0.5. sqrt(144) evaluates to 12. 2^10 evaluates to 1024.
Frequently Asked Questions
- Does this calculator work with a keyboard?
- Yes, you can type expressions directly using your keyboard's number and operator keys in addition to clicking the on-screen buttons.
- Are trigonometric functions in degrees or radians?
- Degrees. For example, sin(90) returns 1, matching a 90-degree angle.
- What happens if I enter an invalid expression?
- The calculator shows a clear error message instead of an incorrect result, for example when dividing by zero or leaving unmatched parentheses.
Related Calculators
- Algebra CalculatorSolve a linear equation of the form ax + b = 0.
- Log CalculatorCalculate the logarithm of a number for any base.
- Quadratic Equation CalculatorSolve a quadratic equation of the form ax² + bx + c = 0.
- Percentage CalculatorCalculate percentages three ways: find X% of a number, find what percent one number is of another, or find percentage change.
- Fraction CalculatorAdd, subtract, multiply or divide two fractions and get the simplified result.
- Area CalculatorCalculate the area of a square, rectangle, triangle or circle.