CSV Timestamp Resampler

Built for irregular timestamped CSV datasets

This version preserves original file order, keeps duplicate timestamps, appends a normalized timestamp column, and leaves the original timestamp column blank for injected rows by default.

PreserveOriginal rows remain untouched.

InjectGap rows at a user-defined interval.

NormalizeAdd a clean timestamp column for export.

ExportDownload a fresh CSV with preview.

Default behavior

Duplicate original timestamps are retained and reported.
Interval injection starts from each original row.
Injected rows get a numeric fill value in all non-timestamp columns.
Original timestamp stays blank for injected rows unless you enable the export option.

Load CSV

Upload a file with one timestamp column and multiple data columns.

Drop a CSV here or click to browse.

Configure

Set timestamp column, interval, fill value, and export options.

Timestamp column Load a CSV first.

Normalized timestamp column name

Timestamp format override Leave blank to auto-detect common formats.

Target interval

Numeric fill value for injected rows

Large-gap warning threshold

Write injected timestamp into original timestamp column
Default is off. When off, injected rows leave the original timestamp field blank.

Validation

Warnings are non-blocking. Duplicate timestamps stay in the export.

ReadyUpload a CSV and run validation to see parse results, duplicate warnings, and injection estimates.

Output preview

The preview shows original-order output. Injected rows are visually flagged.