Detect Date Sequence Problems
Find missing dates, duplicate dates, invalid dates, and out-of-order dates in one column.
Select a date column, analyze the sequence, preview gaps and affected rows, then add a Date Sequence Status column as one reversible step.
Paste Data
Copy cells from Excel or Google Sheets and paste them here.
Import a spreadsheet file
Import CSV or XLSX data into the current dotXLS workspace. Files are processed in your browser.
Tools
Inspect a date column for gaps, duplicates, invalid values, and dates that appear out of chronological order. Source dates are not changed.
Undo and Redo controls are available with the current grid.
Date sequence analysis
Date problem preview
Preview only. The current worksheet is unchanged.
Paste spreadsheet data to create your workspace.
Name Department Amount Ahmed Sales 1200 Maria HR 950
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Export result
Download the current workspace data after editing or cleaning.