About this scientific calculator
This is a full scientific calculator built to work like the calculator that ships with Windows in scientific mode — supporting trigonometric and inverse trigonometric functions, hyperbolic functions, logarithms, powers and roots, factorials, and memory operations, all directly in your browser without installing anything.
How expressions are evaluated
Typed or clicked input is parsed by a custom expression parser that respects standard operator precedence and parentheses, so you can build multi-step expressions (like sin(30)+2^3) rather than only chaining one operation at a time. Angle-based functions respect whichever unit — degrees, radians, or gradians — you have selected, and the 2nd toggle switches trig functions to their inverse counterparts.
Frequently asked questions
- What's the difference between degrees, radians, and gradians?
- These are three different ways of measuring angles: degrees split a full circle into 360 units, radians measure angle by arc length (a full circle is 2π radians), and gradians split a circle into 400 units. Make sure the mode matches what your formula or textbook expects, since sin(90) gives very different results in degrees versus radians.
- How does the memory function work?
- MS stores the current display value in memory, M+ and M- add or subtract the display value from what's stored, MR recalls the stored value back to the display, and MC clears the memory — the same conventions used on most physical and software scientific calculators.
- Why does my calculation history matter?
- The history panel keeps a running list of your past calculations during the session, so you can reference or reuse earlier results without retyping them — useful for multi-step problems where you need to come back to an intermediate value.