Scientific Calculator
Perform arithmetic with parentheses, powers, roots, trigonometric functions, logarithms, and constants like π and e, plus expression history for quick scientific and classroom calculations.
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Keyboard supported - Enter to evaluate, Escape to clear
History
No calculations yet.
Methodology and limitations
Last reviewed:
Methodology
Evaluates arithmetic expressions with standard operator precedence, trigonometric functions (radians), logarithms, and constants.
Limitations
Floating-point rounding may produce minor precision differences versus pen-and-paper calculation.
How to Use the Scientific Calculator
Perform arithmetic with parentheses, powers, roots, trigonometric functions, logarithms, and constants like π and e, plus expression history for quick scientific and classroom calculations.
Method used
The calculator evaluates a typed or button-built expression using standard operator precedence, supported constants, and supported math functions.
Expression result = evaluated arithmetic expression with supported functions
Practical example
Enter an expression such as sqrt(144) + 3^2 to calculate the square root, exponent, and final sum.
- Numbers and decimal values
- Operators such as +, -, x, divide, and ^
- Functions such as sqrt, sin, cos, tan, log, ln, and abs
The result panel shows the evaluated answer and keeps recent calculations in history.
Assumptions
- Expressions must use supported operators and functions.
- The calculator follows the expression evaluator's operator precedence.
- Angle-unit behavior should be checked against your class or calculator-mode requirement when using trig functions.
What this includes
- Arithmetic, parentheses, powers, roots, constants, trigonometric functions, logarithms, keyboard input, and history.
What this excludes
- Graphing, symbolic algebra, calculus solving, equation systems, matrices, and unit conversion.
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Frequently Asked Questions
What can a scientific calculator do?
It handles standard arithmetic plus functions such as powers, square roots, trigonometry, logarithms, nested parentheses, and constants including pi and e. Use it for algebra homework, unit conversions that need exponents, and quick checks of formula results. History helps you revisit prior expressions without retyping every symbol.
Are trig functions calculated in degrees or radians?
Angle mode matters: sine of 90 is 1 in degrees but not in radians. The calculator follows the behavior of the underlying expression evaluator, so verify whether your class or exam expects degrees or radians before trusting trig results. When in doubt, test with sin(90) versus sin(π/2) style inputs your mode supports.
Can I use keyboard input?
Yes. Number keys, operators, Enter to evaluate, Backspace to delete, and Escape to clear work for common calculator actions when the calculator has focus. Mouse or tap input remains available on the on-screen keypad. Keyboard entry speeds long expressions with nested parentheses once you are familiar with the supported operators.
How do I enter exponents and roots?
Use the power operator for exponents, such as raising a base to a power, and the root or square-root functions for roots depending on the keypad labels. Parentheses keep fractional exponents and nested roots unambiguous. Check intermediate results for domain errors like even roots of negatives when working with real numbers only.
Does the calculator keep a history of expressions?
Yes. Recent expressions and results stay available so you can compare alternate formulas or re-run a prior calculation after changing one term. Clear history when you finish a shared device session. History is a convenience feature for this browser tool, not a saved cloud notebook of your work.