Extract Columns from CSV Online
How do you extract columns from a CSV file without Excel? Drop your file below, choose the specific columns you want to keep, and click "Extract Columns". This free CSV column selector and remover tool automatically detects your headers, acts as a CSV column filter, and lets you hide or delete CSV columns online. It is the fastest way to split columns out of a CSV, keep specific CSV columns, or delete columns from large CSV files privately.
Drop your CSV file here or click to browse
Processed locally — never uploaded
How to extract columns from CSV free (step by step)
- Add your file. Drag and drop the CSV into the box above, or click it to browse. The headers will be parsed immediately.
- Select columns to keep. Use the check boxes to select which columns to keep, or use "Deselect All" and choose manually.
- Click "Extract Columns". The tool will filter the data rows in a background stream.
- Download the cleaned CSV. Save the resulting file containing only your chosen columns.
Why use this CSV Column Filter?
- Private by design: your files never leave your device. Filter and cut CSV columns safely.
- No limits, no signup: extract columns from CSV free, delete CSV columns online, or choose specific columns in CSV files as many times as you need.
- Supports massive files: streams data in background workers, allowing you to delete columns from large CSV files (100MB+) without crashing your browser.
- Layman friendly: works as a simple CSV column remover or selector to separate columns into a new file without code.
Frequently asked questions
How do I extract columns from a CSV file?
Upload your file into the tool above, check the boxes for the specific columns you want to keep, and click Extract Columns. The tool generates a new CSV containing only the selected columns and downloads it instantly. Everything runs locally on your device.
Can I remove columns from a large CSV file?
Yes. By deselecting the columns you do not want and keeping the ones you need, you can delete columns from large CSV files easily. This is perfect for trimming bloated files exported from Salesforce or HubSpot.
Is there a limit on the file size or number of columns?
No. The file is parsed as a stream in the background, so you can process large CSV files with hundreds of columns and millions of rows without crashing your browser tab.
Are my column selections uploaded to any server?
No. The column extraction happens 100% inside your browser. Your data never leaves your device, making it safe for corporate data security.
Does the output file keep the original header names?
Yes. The extracted columns retain their original header names and ordering, ensuring database imports and spreadsheets open cleanly.