How to Open & Browse an Excel File: Step-by-Step Tutorial

STEP 1

Open the Excel Viewer

Open your browser and navigate to financialdatatools.com/viewers/excel-viewer/. The viewer works in any modern browser — Chrome, Firefox, Safari, or Edge — on desktop or laptop computers.

You'll see the empty viewer with an Open button in the toolbar and a spreadsheet icon in the center of the screen.

STEP 2

Upload Your Workbook

There are two ways to load your .xlsx file:

• Click the Open button in the toolbar and select your file from the file picker.
• Drag and drop the file from your desktop or file manager directly onto the viewer window.

The viewer accepts .xlsx and .xlsm files created by Microsoft Excel, Google Sheets, LibreOffice Calc, or any other Office Open XML-compatible application.

STEP 3

Browse Worksheets

Once the workbook loads, sheet tabs appear at the top of the viewer showing all worksheet names from the workbook. Click any tab to switch to that sheet and review its contents.

The stats bar below the tabs shows the number of rows and columns in the active sheet, and the total number of sheets in the workbook.

STEP 4

Inspect Visible Cell Values

The active worksheet loads in a spreadsheet-style grid. Each cell displays the value that was saved in the file — numbers, text, dates, and booleans are all rendered in the grid.

Click any column header to sort the sheet by that column. Use the search box in the toolbar to filter visible cells by a keyword in real time.

STEP 5

Check Formulas

Cells that contain formulas are marked with a small purple dot indicator. This makes it easy to identify computed cells at a glance.

Click any formula cell to inspect it. Two things happen:

• The formula bar at the top of the viewer shows the cell reference and its full formula text (for example, =SUM(B2:B10)).
• The Cell Detail panel slides open on the right, showing both the saved cell value and the formula text, each with a copy button.

Note that the viewer displays the value that was last saved in the file — it does not recalculate formulas dynamically.

STEP 6

Toggle Show Formulas Mode

The toolbar includes a Show Formulas button. Click it to switch the grid from displaying saved cell values to displaying formula text directly in formula cells. This is useful when you want to audit formula logic across an entire sheet at once.

Click the button again to return to normal value display.

STEP 7

Export the Worksheet

When you're ready to save the data, click the Export button in the toolbar. Choose your preferred format:

• CSV — for importing into other tools, databases, or spreadsheets
• JSON — for developers and data pipelines
• TSV — tab-separated, useful when values contain commas
• Markdown — for pasting into documentation or reports

The export reflects the active worksheet in its current sort and search state.