CSV Insert Column (At Position)
Insert a new column at any specific index position in a CSV table with a default value.
How It Works & Processing Standards
Insert a new column at any specific index position in a CSV table with a default value.
Your input data is never sent to any server and is securely processed on your device.
Current Limits
- Desktop max file size: 50MB
- Mobile max file size: 20MB
CSV Insert Column (At Position) is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.
How to Use CSV Insert Column (At Position)
- 1Paste CSVEnter CSV table content.
- 2Set Position & NameSpecify insertion index, new column name, and default value.
- 3Download TableCopy or export the modified CSV.
Examples
Insert Column at Index 2
Input: id,email
1,alice@example.com
Result: Insert [name="Alice"] at position 2:
id,name,email
1,Alice,alice@example.com
Common Use Cases
- Fitting exported tables into strict database schemas requiring specific column orders
- Inserting placeholder columns between related data fields
- Aligning multi-source CSV files before merging them together
Frequently Asked Questions (FAQ)
Are column indices 1-indexed or 0-indexed?
Indices are 1-based (position 1 is the first column), or you can specify inserting before/after a named column.