how to transfer contacts from iphone 4s ios 6.1.3 to sim

No data is stored on the sim card.

I don't think there's any way of doing this. You can back up your phone (and thereby your Contacts) to your computer using iTunes, and to the cloud using iCloud, but you can't transfer your contacts to a SIM card in any way that I've ever heard of.

There is no supported way to transfer contacts TO the sim on an iPhone. You can transfer FROM the sim to the iPhone.