Scientific Calculator
Full scientific calculator with advanced functions
What does this calculator do?
Evaluate arithmetic, trigonometric, logarithmic, exponential, and root expressions with standard operator precedence.
Inputs
- A mathematical expression
- Optional angle mode: degrees, radians, or gradians
Outputs
- A numeric result
- A readable expression and local calculation history
Formula and method
Expressions are parsed by a deterministic recursive-descent parser. Trigonometric functions convert the selected angle mode to radians before evaluation.
Worked example
sin(90) in DEG mode = 1. 2 + 3 × 4 = 14 because multiplication is evaluated before addition.
How to interpret the result
The displayed value is rounded for readability; very large or very small values use scientific notation. Domain errors are reported instead of returning NaN.
Common mistakes
- Forgetting a closing parenthesis
- Using degrees when the expression is in radians
- Expecting percentage postfix to mean a business discount
Assumptions
- Calculations use IEEE-754 JavaScript numbers
- No time, currency, or physical-unit interpretation is inferred
Limitations
- Finite precision can affect the last displayed digits
- Complex numbers and symbolic algebra are not supported
Frequently asked questions
How is a scientific calculator different from a basic calculator?
It evaluates functions such as trigonometry, logarithms, powers, roots, and factorials in addition to basic arithmetic.
Is my expression sent to a server?
No. The parser and calculation run locally in your browser.
Related Tools
Percentage Calculator
Calculate percentages, increases, and decreases
Average Calculator
Calculate the average of a set of numbers
Age Calculator
Calculate exact age from date of birth
Date Difference
Calculate the difference between two dates
BMI Calculator
Calculate Body Mass Index
Speed Calculator
Calculate speed, distance, or time