Scientific Calculator
Full scientific calculator with trigonometry, logarithms, powers, and more.
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How to use
Use the function buttons (sin, cos, tan, log, ln, √, x²) along with numbers and operators to build complex expressions. Supports both degree and radian modes for trigonometric functions. Keyboard input is also supported.
Frequently Asked Questions
What is the difference between log and ln?
log (common logarithm) uses base 10. ln (natural logarithm) uses base e (≈ 2.71828). log is common in engineering; ln is common in mathematics and physics.
What mode should I use for trigonometry — degrees or radians?
Use degrees for everyday problems and geometry. Use radians for calculus and physics, where angles are expressed as fractions of π.
What is e (Euler's number)?
e is a mathematical constant approximately equal to 2.71828. It is the base of the natural logarithm and appears frequently in exponential growth, compound interest, and probability formulas.