Free Tool
Dataset Merger
Combine two CSV or TSV datasets using a shared key column. Choose the matching column from each file, select a join type (inner, left, right, or full), preview the result, and download the merged dataset as CSV.
Files never uploaded
Inner / Left / Right / Full join
Downloadable CSV output
Your data never leaves your browser. Both files are merged locally using JavaScript. No data is uploaded, stored, or transmitted.
Left dataset
Drop left CSV here
Right dataset
Drop right CSV here
Merging datasets…