PCalc is a fully featured scientific calculator for macOS with support for hexadecimal, octal and binary calculations, as well as an optional RPN mode, parentheses, programmable functions, and an extensive set of unit conversions.

Features include:

• A powerful menu bar widget - do quick calculations without ever leaving your current app.
• Switchable button layouts - choose from many different horizontal and vertical layouts. Includes all the layouts from the iPhone and iPad, as well as Mac-specific ones.
• A full button layout editor - make your own calculator to best suit your needs, sync it automatically with iPhone and iPad, and share it with others.
• Calculator themes - pick your look, all the way from minimalist to striking.
• An RPN mode with one button access to the stack, and optional multiple-line display.
• Editable user conversions, functions, and constants which are synced automatically across multiple devices.
• Hexadecimal, octal and binary modes, complete with a variety of bitwise operators.
• A simulated paper tape to keep track of your calculations with a "ticker tape" mode under the main display.
• Smart searching of conversions, functions, and constants. Just search for "$ to £" for example.
• Stylish, consistent user interface.
• Support for Retina displays.
• Full AppleScript support.
• Multiple undo and redo.
• Modern 64-bit application.
• Handoff of in-progress calculations between PCalc on iOS, macOS, and watchOS.
• Support for the Touch Bar on the MacBook Pro.
• Support for macOS 11 Big Sur.
• Support for Macs with Apple Silicon or Intel processors.