CleanMySheet guide
Format phone numbers in CSV or Excel
CleanMySheet strips non-digits, keeps a leading +, and can format 10-digit US numbers as (555) 123-4567 or 555-123-4567. Apply Format phone numbers from the catalog. Columns are detected by header (phone, mobile, cell) or sample values.
Open the cleanerSteps
- Upload the contact file
- Search “phone” and pick parens or dashed
- Review Diff view
- Export
Not a carrier lookup
This is formatting, not validating that a number is in service. Invalid short strings are left alone.
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