Truncate CSV & Excel Columns

Easily keep or remove columns from your CSV or Excel files. Select a range, keep only the first/last few columns, or remove specific ones.

Select CSV or Excel File

Drag & drop here, or click to browse

Or Paste CSV Data

Truncation Method

Number of Columns to Keep (from start)

Total columns available:

Number of Columns to Keep (from end)

Total columns available:

Start Index (1-based)

End Index (1-based)

Number of Columns to Remove (from start)

Number of Columns to Remove (from end)

Column Indices to Keep (e.g. 1, 3, 5-8)

Use commas for individual indices and hyphens for ranges. 1-based indexing.

Rows Processed

Original Cols

Result Cols

Time Taken

Showing first 10 rows preview

Keep first/last N columns, select a range, or pick specific indices to keep only what's necessary.

Processing happens in real-time within your browser. Large files are handled efficiently using optimized logic.

Your data never leaves your computer. All CSV transformations are performed client-side for maximum privacy.