OFX files are offered in online banking to download transaction details. OFX files provide the date, amount, payee/payer, memo, check number, investment details for investment transactions. OFX files are also called "Microsoft Money" files.
Download and install the Transactions app, OFX2CSV or Bank2CSV
Start OFX2CSV and locate an OFX file
Click Save to save a CSV file and then open it in Excel (or other spreadsheet application) or click Copy to clipboard and then switch to Excel and click Paste there
Bank (Checking/Savings/Credit Line)