Jeppesen JeppView 3 - Manual (Page 239)

JeppView User's Guide
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From the dropdown lists, select the measurement unit you want to convert from and
the measurement unit you want to convert to, then enter the value to convert from.
JeppView displays the conversion in the area to the left of the convert-to
measurement unit.
Options
The Options dialog box enables you to customize several JeppView settings. Four
tabs, Display, Printing, Measurement, and Warnings, determine how the
enroute and terminal charts appear, as well as how these and other JeppView
products are printed.
To open the Options dialog box from any view, click Tools > Options.
Display Tab