Food Engineering Basic Tools

I am making a Food Engineering app that combines the basic tools for a Food Engineer.
I am adding a:
Temperature Convertor (°C<>°F<>°K),
a D and Z value graph plotter,
a Moisture content convertor(dry basis<>wet basis)
a Material and Energy balance calculator

I’d very much appreciate any more tools I can implement into the app.
Thanks in advance.

Current programs
viasala humidty calculator
engineering power tools
For the flow and thermal balance of an equipment
Ansys 19.2 academic

Thank you very much @mozaydogan

how about viscoisity units Poise and Pa.s.
Pressure units