SwitchCalc is a GTK4 calculator application for Linux with Standard, Scientific, Programmer, and Date calculation modes.
This is free and open source software.
Features include:
- Standard Mode:
- Basic arithmetic operations (add, subtract, multiply, divide).
- Percentage calculations.
- Memory functions (MC, MR, M+, M-, MS).
- Keyboard support for all operation.
- Scientific Mode:
- Trigonometric functions (sin, cos, tan, asin, acos, atan).
- Hyperbolic functions (sinh, cosh, tanh, asinh, acosh, atanh).
- Logarithmic functions (log, ln, log2).
- Exponential functions (exp, 10^x, 2^x).
- Powers and roots (square, cube, sqrt, cbrt, x^y).
- Constants (pi, e).
- Factorial, absolute value, floor, ceil, round.
- Angle mode selector (Degrees, Radians, Gradians).
- Keyboard shortcuts: Ctrl+S (sin), Ctrl+C (cos), Ctrl+T (tan), Ctrl+L (log), Ctrl+N (ln), Ctrl+R (sqrt), Ctrl+P (pi), Ctrl+E (e).
- Programmer Mode:
- Number base conversion (Decimal, Binary, Octal, Hexadecimal).
- Live display of value in all bases.
- Bit width selection (8, 16, 32, 64-bit).
- Adjustable shift amount (1-63 bits).
- Bitwise operations:
- AND, OR, XOR, NOT, NAND, NOR.
- Left shift, Right shift.
- Rotate left, Rotate right.
- Bit count (popcount).
- Leading zeros, Trailing zeros.
- Byte swap.
- Two’s complement.
- Toggle bit at position.
- Keyboard shortcuts: & (AND), | (OR), ^ (XOR), ~ (NOT), < (left shift), > (right shift).
- Hex input via A-F keys.
- Date Mode
- Date difference calculator (years, months, days, weeks, hours).
- Add/subtract time from dates (years, months, days, weeks).
- Age calculator with next birthday countdown.
- Unix timestamp converter (to/from date).
- Today’s info panel (week number, day of year, leap year status).
- Working days calculation (excluding weekends).
Website: github.com/djwarf/switchcalc
Support:
Developer: djwarf
License: MIT License

SwitchCalc is written in Go. Learn Go with our recommended free books and free tutorials.
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