Check an Excel workbook for hidden risks
Scan an Excel workbook for formula errors, volatile functions, external links, hidden sheets, inconsistent formulas and structural complexity. The entire check runs privately in your browser.
Free spreadsheet tools
Check, compare and convert Excel files privately.
Practical tools for common workbook problems. Files are processed locally in your browser, so they never need to reach our server.
Workbook tools
Find formula errors and inconsistent Excel formulas
Check every populated formula cell for error values, volatile functions, external workbook references and formula patterns that differ unexpectedly from the rest of a column.
Map worksheet and external workbook dependencies
Discover which worksheets reference each other, count cross-sheet formula links and identify dependencies on external Excel files before changing or replacing a workbook.
Compare two Excel files for changed cells and formulas
Choose an original and a newer workbook to find added, removed and changed cells across every worksheet. Both files stay in your browser.
Convert Excel to CSV without uploading your workbook
Open an .xlsx or .xlsm workbook, choose a worksheet and download it as CSV. Select comma, semicolon, tab or pipe delimiters without sending the file to a server.
Convert Excel to JSON privately in your browser
Turn any worksheet in an .xlsx or .xlsm workbook into JSON. Use the first row as property names or export a simple array of rows.
What is the spreadsheet process costing each year?
Estimate time lost to duplicate entry, manual reporting, chasing updates and correcting mistakes.