There are probably apps on your iPhone that will do this, but I like to have a hard copy in the garage.
The excel files might upload, but the files are conversion of newton meters to ftlb and inch pounds.
I take my netbook to the garage when working on the bike. 1) I have the Service Manual on it. 2) I have TuneECU on it. and 3) I have Chrome installed and downloaded the Numerics Calculator/Converter. It works offline, too. Cool tool.