On the web version you may download the estimates report as a CSV file (comma delimited). That is at Files > Downloads > Files / Reports > Estimates
File > Download > Files / Reports
Estimates > Settings
Settings here you may set on or off the fields you need on the csv file
Once you have the settings done Select you date range and then Go. The file will be at the download folfer on the computer. Keep in minda that this file is on a CSV Format when opening it should be by columns.