Data & Tables
Column Merger
Merge table columns online. Combine selected columns with separators, templates, and empty-value handling locally in your browser.
Tool
Merge table columns online. Combine selected columns with separators, templates, and empty-value handling locally in your browser.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Use this Column Merger to build a new field from two or more existing columns. The tool joins values with a separator, use a simple template, skip empty parts, trim whitespace, and choose whether to keep the source columns. It is useful for creating display names, combined addresses, labels, and export fields.
Examples
- first_name,last_name,country Ada,Lovelace,DE Ben,Ortiz,US Cy,Chen,GB
Frequently Asked Questions
Is my table data uploaded to a server?
No. The tool parses, transforms, previews, and exports data locally in your browser without uploading your input.
Can empty values be skipped?
Yes. The tool should allow separators to be skipped when a source cell is empty, avoiding doubled punctuation or extra spaces.
Can I use a custom template?
Yes. A simple template mode can combine columns in a predictable pattern, such as "{first_name} {last_name}".
Does merging remove original columns?
Only if the user chooses that option. Keeping originals is safer while reviewing the result.
What file sizes are practical in the browser?
Small and medium tables are the best fit. Very large files can use a lot of memory because parsing, previews, and exported results all live inside the browser tab.