Scientific Calculator - Full-Featured Free Online Calculator Scientific Calculator

How to Use

Click buttons or use your keyboard to enter expressions. The calculator evaluates expressions following standard mathematical order of operations (BODMAS/PEMDAS).

• Numbers & Operators: Click buttons or type directly. Use *, /, +, - for operators.
• Evaluate: Press = or Enter.
• Clear: Press C or Escape to clear everything.
• Delete: Press ⌫ or Backspace to remove last character.

Scientific Functions

• sin / cos / tan: Trigonometric functions. Toggle DEG/RAD to switch angle mode.
• INV: Activates inverse mode — sin becomes asin, cos becomes acos, tan becomes atan.
• log: Base-10 logarithm. ln: Natural logarithm.
• x² / x³ / xⁿ: Square, cube, or arbitrary power of the current value.
• √ / ∛: Square root and cube root.
• n!: Factorial of the current value (works for non-negative integers up to 170).
• π / e: Insert mathematical constants pi (3.14159…) and Euler’s number (2.71828…).
• %: Percentage — divides current value by 100.
• +/−: Negates the current value.

Memory Functions

• MC: Memory Clear — clears stored memory value.
• MR: Memory Recall — inserts stored memory value.
• M+: Memory Add — adds current result to memory.
• M−: Memory Subtract — subtracts current result from memory.

Keyboard Shortcuts