Scientific Calculator
A browser-based scientific calculator that goes well beyond basic arithmetic. It supports trigonometric functions (sin, cos, tan and their inverses), logarithms (base-10 and natural log), exponents and roots (square, cube, nth power, square root, cube root), constants (pi and Euler's number), and parentheses for grouping sub-expressions.
The calculator includes memory functions (M+, M-, MR, MC) for storing and recalling intermediate results, just like a physical scientific calculator. The display shows both the full expression you're building and the current computed result, so you can verify each step before committing.
All calculations are done safely in your browser using a sanitized expression parser — no data is sent to a server. You can also type expressions directly from your keyboard for faster input, making it practical for homework, engineering calculations, and quick math checks.
By The Paper Room Editorial Team — Financial & Utility Tools
Frequently asked questions
Does the calculator support order of operations?▼
Yes. The calculator respects standard mathematical order of operations (PEMDAS/BODMAS): parentheses are evaluated first, then exponents, then multiplication and division left to right, then addition and subtraction left to right.
Are trig functions calculated in degrees or radians?▼
The trig functions (sin, cos, tan) use radians, which is the standard for JavaScript's built-in Math functions. To convert degrees to radians, multiply by pi/180. For example, sin(90°) = sin(pi/2 radians) = 1.
What do the memory buttons do?▼
M+ adds the current result to memory, M- subtracts it from memory, MR (Memory Recall) inserts the stored memory value into your expression, and MC (Memory Clear) resets the memory to zero. Memory persists until you clear it or refresh the page.
Can I use my keyboard to type expressions?▼
Yes. You can type numbers, operators (+, -, *, /), parentheses, and decimal points directly from your keyboard. Press Enter or = to evaluate, Backspace to delete the last character, and Escape to clear the expression.
Is this calculator safe to use — does it use eval()?▼
No, it does not use eval(). The calculator sanitizes your expression to ensure it only contains valid mathematical tokens (numbers, operators, Math functions, and parentheses) before computing the result. No arbitrary code can be executed.