Upload two files.
See every match and mismatch.
No AI guessing, no hallucinated totals, no prompts.
Deterministic CSV and Excel reconciliation that shows
what's matching, what's different, and what's missing.
Free for 3 comparisons/month. No signup required.
What you'll see
Results in seconds, not hours
Instant matching
Upload two files and see matched rows, differences, and missing records in seconds.
Cell-level diffs
Every difference is highlighted at the field level so you can spot exactly what changed.
One-click export
Download results as CSV or Excel — filtered by matched, diffs, or unmatched.
How it works
Three steps. That's it.
Upload two files
Drop your CSV or Excel files. Your data stays in your browser — nothing gets uploaded to a server.
Map your columns
Tell SheetPair which columns to match on (like Invoice # or Account ID) and which to compare (like Amount or Date).
Review the results
See matched rows, differences, and missing records instantly. Export the results to CSV or Excel.
Privacy
Your data never leaves your browser
SheetPair processes files entirely on your device using Web Workers. Your spreadsheets are never uploaded to our servers, never stored in a database, and never sent to a third-party AI model. Close the tab and the data is gone.
For files over 50,000 rows that need server-side processing, data is encrypted in transit and auto-deleted within 24 hours. No AI round-trips.
Use cases
Built for people who compare spreadsheets
Bank reconciliation
Compare your internal ledger against bank statements. SheetPair matches transactions by reference number or amount and flags discrepancies \u2014 missing deposits, duplicate charges, amount mismatches. What used to take an afternoon now takes minutes.
ledger.csv vs. bank_statement.csv
847 matched · 12 differences · 3 unmatched
Invoice matching
Cross-reference vendor invoices against purchase orders. Catch overbilling, duplicate invoices, and missing line items before they become problems.
Inventory audits
Compare physical count sheets against your inventory system. Find discrepancies fast, whether it's a warehouse with 50 SKUs or 50,000.
What is data reconciliation?
Compare two files. Find every discrepancy.
SheetPair is a browser-based data reconciliation tool that matches records between two CSV or Excel files and shows you what matches, what's different, and what's missing. It runs entirely in your browser — files never upload to a server — and uses deterministic, rule-based matching rather than AI. Built for finance, accounting, and operations teams reconciling bank statements, AP exports, and inventory counts on a recurring schedule.
Done reading? Try it.
Upload two files and get results in seconds. No signup, no credit card, no catch. Free for files up to 1,000 rows.