Standard mode for everyday arithmetic. Scientific mode for trigonometry, logarithms and powers. Programmer mode for hex, binary, octal and bitwise operations.
Type numbers and operators directly from your keyboard. Press Enter or = to evaluate, Backspace to delete the last character, and Escape to clear the display.
Every result is saved to the history panel on the right. Click any entry to recall the result and continue calculating from that value.
All calculations run entirely in your browser with no server calls. Safe for sensitive figures, and works without an internet connection once the page is loaded.
Switch to Scientific mode using the tabs at the top. You get access to sin, cos, tan, log, ln, powers, square roots, factorials and constants like π and e. Toggle between Degrees and Radians with the DEG/RAD button.
The programmer calculator is designed for developers. It lets you work with integers in hexadecimal (HEX), decimal (DEC), octal (OCT) and binary (BIN), and perform bitwise operations: AND, OR, XOR, NOT and bit shifts.
Yes. Type numbers and operators directly from your keyboard. Press Enter or = to evaluate, Backspace to delete, Escape to clear. Standard symbols +, −, *, / all work as expected.
Switch to Scientific mode, enter your angle value, then press sin, cos or tan. Use the DEG/RAD toggle to switch between degree and radian input. For example, sin(90°) = 1, sin(π/2 rad) = 1.
History is kept for the current session in the panel on the right. Click any history entry to load that result back into the calculator. Clearing the history or closing the tab removes all entries.