Converting units to metric

I'm going开发者_StackOverflow社区 to be implementing Ektron CMS for a client and they may require conversion of units from imperial to metric for different values. The best thing would be an Ektron module, then would be something in C# I could use, finally a webservice I could access.

Anyone have suggestions or best practices regarding any of those three, with Ektron CMS and ASP.net in mind?

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ended up doing this on the frontend, a benefit being that only one value is stored in this manner

http://hanamidesign.com/lab/code/prototype/measurement-unit-switcher.html for an open source solution