Fixed-Width ⇄ CSV Converter

Convert between fixed-width (positional) text and CSV. Parse fixed-width files by specifying column widths or by detecting field boundaries from a header line — or convert CSV to fixed-width by padding each field to the column width. Pairs with the CSV Viewer, CSV to TSV, and CSV to SQL converters. Everything runs locally in your browser.

Mode Column widths (comma-sep) auto-detect from first line first row is header CSV delimiter

Input

Output

"Auto-detect" finds column boundaries from the first line by treating 2+ consecutive spaces as a field separator. For manual mode, specify widths like "10,5,15" — each field is that many characters wide. CSV→fixed-width pads each field with spaces to the longest value in its column. Pairs with CSV Viewer, CSV to TSV, and CSV to SQL. Runs locally.