Free business calculator

Client List Cleaner

Clean a client CSV, fix spacing and name case, format phones, validate emails, and remove exact duplicates.

  • Instant results
  • Private in your browser
  • PDF report included
Your workspace

Clean a client list

Results update instantly. Nothing leaves this browser.

1Clients
2Cleaning
Ready to use

Review and make it yours

Edit the draft before publishing or sending it. Your changes stay on this device unless you copy or download them.

3 words · 108 characters
Use the result well

A clear answer, with the assumptions visible

These recommendations turn the result into an operational next step without hiding the inputs behind a score.

  1. 1

    Review invalid rows before importing the file.

  2. 2

    Keep consent and unsubscribe columns in the source data.

  3. 3

    Save the original CSV before replacing anything.

How this tool works

  1. Trim every field and normalize email case.
  2. Parse local phone numbers with libphonenumber-js.
  3. Remove exact email or phone duplicates while keeping invalid rows visible.
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