Merge two Excel datasets on approximate string similarity (Levenshtein distance) when exact key matching fails. Developer tier.
Free is enough for most one-off jobs. Pro raises the file and batch caps; Pro + Media unlocks GB-scale streaming and unlimited duration.
Larger files supported on Developer (5 GB CSV) and Enterprise (unlimited). All processing happens in your browser — files never reach a server.
Upload two Excel or CSV files
Select the join columns and similarity threshold (0–100%)
Download the merged file with a match-score column
0 bytes uploaded. Fuzzy Merger runs entirely in your browser using SheetJS and ExcelJS. Your spreadsheets never leave your device.
Threshold can be set from 50% to 100%. 80% is recommended for company name matching; 95% for personal names.
When multiple rows exceed the threshold for a single source row, all candidates are listed with scores and you choose which to keep.