Client-Side UtilityLocal memory execution • Zero server telemetry
Scientific Calculator & Expression Evaluator
Full-featured scientific calculator with trigonometric functions, logarithms, roots, powers, factorials, and angle mode switching. Safe client-side parser with full keyboard navigation.
MMaintained by Mathematics Tools Desk
Published Last verified
Press Enter to evaluate
= 0
Calculated Output
Live computedEvaluated Result0
Scientific Formats
Scientific Notation:0.0000e+0
Binary (Integer):0₂
MMaintained by Mathematics Tools Desk
Published Last verified
Calculation Methodology & Formula
Calculates mathematical expressions using Dijkstra’s Shunting-Yard algorithm for strict mathematical operator precedence (BODMAS/PEMDAS) and IEEE 754 precision safeguards.
f(x) = \sin(\theta), \quad \log_{10}(x), \quad x^y, \quad n!Worked Example: Trigonometric & Exponential Synthesis
Calculate the hypotenuse projection using sine and power.
expression:10 * sin(30) + 2^4
angle Mode:DEG (Degrees)
Expected Output21
10 × sin(30°) = 10 × 0.5 = 5. 2^4 = 16. 5 + 16 = 21.
Technical Constraints & Limitations
- Factorial (n!) is mathematically defined for non-negative integers up to 170 due to 64-bit IEEE 754 floating-point overflow.
- Trigonometric functions in DEG mode require angles in degrees; switch to RAD when working with radian calculus formulas.
Frequently Asked Questions
How do I toggle between Degrees and Radians?
Click the DEG / RAD toggle button at the top left of the keypad. In DEG mode, sin(90) = 1. In RAD mode, sin(π / 2) = 1.
Can I use my physical computer keyboard?
Yes. You can type numbers, standard operators (+, -, *, /), parentheses, and press Enter to evaluate or Escape to clear.
Does this calculator use JavaScript eval()?
No. This calculator uses a secure, custom-built Dijkstra Shunting-Yard parser and Reverse Polish Notation (RPN) stack engine. No eval() or dynamic code execution is ever performed.