Free Data Cleaning Tools
Clean, format, and validate your data right in the browser. No account needed, no file size limits on the free tier, no nonsense.
CSV Cleaner
Upload any CSV and instantly detect and fix 20+ data quality issues. Duplicates, blanks, formatting errors — all cleaned in seconds.
Try it FreePhone Number Formatter
Convert phone numbers from any format to E.164 international standard. Handles country codes, parentheses, dashes, and spaces.
Try it FreeEmail List Cleaner
Validate email addresses, detect disposable domains, find typos, and remove duplicates from your mailing list.
Try it FreeCSV Deduplicator
Find and remove duplicate rows using exact match, case-insensitive, or multi-column comparison strategies.
Try it FreeDate Standardizer
Detect 6+ date formats (MM/DD, DD/MM, ISO, etc.) and convert everything to a consistent standard.
Try it FreeHow It Works
Three steps. Zero friction.
Upload or paste
Drop your CSV file or paste data directly into the tool. Nothing leaves your browser until you say so.
Pick your fixes
Choose what to clean — duplicates, formatting, validation, or all of the above. Preview changes before applying.
Download clean data
Export a clean CSV ready for import into Salesforce, HubSpot, Mailchimp, Facebook Ads, or any other platform.
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