size of run?

Hi,
I've been trying to find the minimum/recommended size of a run per medium sized chicken and have had different quotes.
One says 15 square ft per bird another 3 square meters another 3 square yards etc.

Can someone please tell me the right area per bird? My run will be 2.4 meters w and d or just over 15 ft w and d. I can make this a bit bigger if I need to for a max of 6 medium sized chickens.
Thanks Jan

15ft is 4.6 metres so not sure of the maths here. If 2.4m square you have 5.8 sqm. Someone will be along in arouind 5 minutes to say that 2sqm per bird is minimum for a small run and 1sqm per bird is more for a large paddock with lots of chucks. On that basis, and as a beginner I am not about to challenge the established orthodoxy, 2.4 me on each side would probably be OK for 3 chucks. 15 ft per side on the other hand is over 20 sqm and I imagine that 6 birds would be very happy in there! Mine have a little under 2sqm each but spend most of their time free ranging anyway. Good luck!

Thank you all for the replies.

Not being a great mathematician but to work the square foot or square meter do I times the sides to get the square of? for example the run will be just over 15 ft on each side so by
15 x 15 = 225 so is this the square foot? or do I have to divide this by something? Obviously if this is the square foot I will def not be keeping 22 chickens - max of 6.

I have found a decorators site that sells water proof tarpaulin a 18 ft x 12 ft for £8.99 I ordered this size before deciding to make the run bigger so will buy another to completely cover the run and part of one side as a wind breaker. I am planning to put hemcore or another of this product I've seen available aubi something or other slighly cheaper than hemcore and softer.

Thanks Jan

I'm getting worried now....I've got a small raised coop with a m2 ground space below and a run of about 2 1/2 m2 which is on grass and moved every 2/3 days. I also put in a box of fresh dug earth every 2 days for grit and dust bath.
At the moment I don't want to let them out to free range. Am I giving them enough space etc.? I've got 3 girls and they seem happy.