Click the buttons to input a math formula or equation like on a pocket calculator. 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.
Scientific calculator online, mobile friendly. Creates series of calculations that can be printed, bookmarked, shared and modified in batch mode.