Scientific Calculator
Perform trigonometric, logarithmic, exponential, and algebraic calculations with order of operations.
Summary & Breakdown
Calculation Log
- No recent operations logged yet.
About the Scientific Calculator
A scientific calculator extends standard arithmetic by offering full support for algebra, trigonometry, exponential powers, logarithms, and scientific notation.
Built with an expression token parser without risky code execution, this tool computes complex mathematical problems while strictly honoring the algebraic order of operations (PEMDAS).
Toggle between degree and radian modes, compute factorials, recall your previous calculation with Ans, and utilize standard four-register memory slots.
How the Calculations Work
Tokenizes mathematical expressions into operands and operators, evaluates function calls (sin, cos, ln, sqrt) and powers (^), and parses parentheses via recursive descent or shunting-yard algorithm.
Order of Operations: Parentheses -> Exponents/Functions -> Multiply/Divide -> Add/Subtract
Variables & Definitions
- DEG / RAD: Angular mode determining whether sin(90) = 1 (degrees) or sin(pi/2) = 1 (radians)
- Ans: Stores the scalar result of the preceding successful calculation
- Memory: Classic MC (clear), MR (recall), M+ (add), M- (subtract) registers
Evaluating 5 + 3 * 2^3: The exponent 2^3 = 8 is calculated first. Next, multiplication 3 * 8 = 24. Finally, 5 + 24 = 29.
Key Terms Explained
PEMDAS / BODMAS
Standard mathematical convention for the order of operations in algebraic expressions.
Radian vs Degree
Angle units where 180 degrees equals pi radians (~3.14159 radians).
Factorial (n!)
Product of all positive integers less than or equal to n (e.g., 5! = 5*4*3*2*1 = 120).
Natural Logarithm (ln)
Logarithm to the base of mathematical constant e (~2.71828).
Practical Tips & Pitfalls to Avoid
Verify angle mode before trig calculations
Ensure the DEG or RAD toggle is set appropriately for your problem type.
Balance all opened parentheses
Unclosed parentheses are automatically closed by the parser upon pressing equals.
Use Ans for chained calculations
Press Ans to carry forward your previous output into multi-step problems.
Check factorial constraints
Factorial functions apply only to non-negative integers up to 170 due to IEEE floating-point limits.
Frequently Asked Questions
No. It utilizes a safe tokenizing recursive-descent math parser that prevents script execution and handles strict operator precedence.
Click the root symbol button, which inserts sqrt( into the formula display, followed by your desired number and a closing parenthesis.
log calculates common base-10 logarithms, whereas ln calculates natural logarithms using Euler's constant e.
M+ adds the current display value to memory; M- subtracts it; MR recalls memory into your expression; and MC clears memory to zero.
The parser rounds floating point outputs to 12 significant digits to eliminate binary precision artifacts.