www.Mining-Ether.comCurrently you need to allow 'access control expose headers' if you don't in your browser. The Etherchain API does not have the headers for this loaded in, so I couldn't get cross domain requests to work, they kept getting rejected for "No 'Access-Control-Allow-Origin' header is present on the requested resource" if anybody has any ideas. Anyways, if the calc doesn't load for you, you can install that CORS plugin and it will work. Hope to have that resolved soon.
These numbers will look similar if you use a pool, haven't tried solo mining against them yet, so please let me know. The estimations on this for my pool mining have been between max +- 1 ETH so far.
Hope it helps some miners out there.