General
Scientific Calculator
Full scientific calculator with trigonometry, logarithms, powers, factorial, constants (π, e), memory functions, DEG/RAD toggle, and keyboard support.
DEG
0
History
How is this calculated?
Expressions evaluated using JavaScript Math library
Trig: sin/cos/tan convert DEG→RAD internally when in DEG mode
rad = deg × (π / 180)
Logarithms: log = log₁₀, ln = logₑ
Factorial: n! = n × (n-1) × ... × 1 (iterative)
Order: PEMDAS/BODMAS via expression parserFAQ
Frequently asked questions
What functions does this scientific calculator support?
It supports trigonometric functions (sin, cos, tan and inverses), logarithms (log base 10, natural log ln), powers and roots, factorial, constants (π, e), memory operations (M+, M-, MR, MC), and parentheses for complex expressions.
How do I switch between degrees and radians?
Click the DEG/RAD toggle button at the top of the calculator. When in DEG mode, angles are in degrees. In RAD mode, angles are in radians. The current mode is always displayed.
Can I use keyboard shortcuts?
Yes! Type numbers and operators directly. Use Enter to calculate, Escape to clear, Backspace to delete last character. Parentheses, decimal point, and scientific notation (e) are all supported.
How does the memory function work?
M+ adds the current display value to memory, M- subtracts it from memory, MR recalls the stored value, and MC clears memory. A small "M" indicator shows when memory has a stored value.
What is the order of operations?
The calculator follows standard mathematical order: parentheses first, then exponents, then multiplication/division left-to-right, then addition/subtraction left-to-right (PEMDAS/BODMAS).
Is this scientific calculator free?
Yes, completely free with no sign-up required. All calculations run in your browser — your data stays on your device and is never sent to any server.