Doing metric to English system calculations and vice versa is a pain to do but certainly not impossible. Personally, I think that the centimeter to inch and the inch to centimeter conversion is one of the easiest metric / English calculations to do.
I wrote an article on how to calculate cm to in. It is a step by step, easy to read article that will have you converting these two measures of linear distance easily. Check it out.

BookingLive is an award winning, UK based, industry specific modular booking and management system, which facilitates managing your customers, sales and enquiries, emarketing campaigns, online bookings, staff, scheduling, finances, reports and promotional campaigns.

If you’re looking for a content management system (CMS) to handle your personal or company website you’ve probably considered purchasing a software package. When comparing products we often think that more expensive equals better quality. This way of thinking isn’t always true with most products and it’s especially not true with content management systems.