zpool, Hash Refinery and ahashpool simple BTC to Fiat Converter.
Just install the extension and choose your favourite fiat currency. A new column will appear in both balance and earnings tables to show the BTC converted to your selected currency.
Accepted Donations in BTC: 1JTqH4NAUJxuFgjcSCKwpHm1CX8aGWANnR
Hope this tiny mod is useful for somebody.