- Evaluation of mathematical expressions - Parsing and handling of physical units (All SI units, imperial units, time-based units, ..) - Explicit unit conversions ("60mph to m/s", "6Mbit/s * 1.5h to GB") - Physical constants (speed of light, Plancks constant, ...) - User-defined variables & functions - Syntax highlighting, Tab completion, Readline interface - Web and terminal versions
