For the Sistine chapel, how many square feet of ceiling did Michelangelo paint per day?
Michel Angelo would do a single painting in a day. He did not cover much area in a single day because of the details involved in each painting. He took four years to complete the entire ceiling.
It took him 4 years to paint 12.000 sq ft, so you can work it out yourself. I guess he took a day off now and then as well... :-)