CSV Column Renamer.

What it does

Rename CSV column headers with a mapping.

Why use it

CSV Column Renamer helps you rename csv columns in your browser — fast, private, no upload required.

Example input

full_name,email_address,joined
Alice,alice@example.com,2024-01-15

Example output

name,email,signup_date
Alice,alice@example.com,2024-01-15

Renamed: full_name → name, email_address → email, joined → signup_date

Frequently Asked Questions

Is my data uploaded when using CSV Column Renamer? ▾

No. All processing runs locally in your browser. Your files never leave your device.

Do I need an account? ▾

No account is required. All tools are free and work instantly.