Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with in-depth information.
If you prefer keyboard input of math formulas, you can type directly into the input bar. Pressing ↵ starts the calculation. To calculate a function like 'sine' with an argument like 90, input the corresponding function name followed by the argument 90 in parentheses. Example: sin (90)