Compare two tables
Compare lists or exports by a unique key. Map differently named columns and find added, removed and changed records.
Old table
CSV / TSV · 5 MB
Paste or inspect source text
New table
CSV / TSV · 5 MB
Paste or inspect source text
How to use
- Load the old and new tables and verify the separator.
- Choose a unique key on both sides and map columns to compare.
- Review added, removed and changed rows; download the comparison report.
Before you start
Each CSV/TSV: UTF-8, 5 MB, 10,000 rows, 100 columns. Exact text comparison with optional trimming. Blank or duplicate keys must be corrected; records are not guessed or merged. Report excludes unmapped columns from comparison. No Excel workbooks or formula evaluation.