*Confused about this, I trawled the web to get the answer. Here's what I found.*

How to calculate weekly rent into per calendar month (pcm) rent ...

How to calculate weekly rent into per calendar month (pcm) rent ...

There are two ways, both of which arrive at the same result. The first way is to multiply the weekly rent by four then add one third of one week's rent. For example, for a weekly rent of £90 you would calculate 4 X £90 + £30 to get £390 per calendar month (£30 being one third of one week's rent).

The second way gets the same result, you multiply £90 by 52 (doh! that's 52 weeks in the year) then divide by 12 (doh! that's the months in the year). £90 X 52 = £4,680 divided by 12 = £390.

**Edited by The Last Bear, 27 September 2007 - 10:31 PM.**