4 weeks old. Just brought them and the mom cat to the vet yesterday for basic check up and also to slowly ween them off the mom and get them started on kitten food. They should be ready for adoption in the next 2 weeks. Do let me know if any friends of yours is kind enough to give them homes. I'll take nicer pictures of them once they come back from the vet.
The mom cat is a friendly stray that comes to our house everyday and we have been feeding her for many months. We noticed that she was pregnant sometime back and eventually found the kittens under one of our cars a few weeks ago.