Private Equity Data Rooms: Cleaning Up Lotus Spreadsheets Before Diligence
How deal teams can convert legacy spreadsheet packages before review, indexing, or secure sharing.

This guide is written for private equity, M&A, and diligence teams who need to recover useful records from Lotus 1-2-3 spreadsheets without sending sensitive files to a cloud converter.
Legacy files slow diligence
A data room with Lotus files creates friction for reviewers and risk for sellers. Buyers may not have compatible software, and online conversion may expose sensitive deal data.
Local batch conversion gives the team modern review formats before the archive leaves the controlled environment.
A simple package strategy
Convert to XLSX for editable review, PDF for browseable evidence, and CSV for importing into diligence databases. Keep originals in a separate untouched source folder.
Outputs to keep in the migration package
Lotus 1-2-3 Converter supports XLSX, PDF, HTML, Markdown, CSV, XLS so the same archive can serve human review, analytics import, compliance retention, and AI/RAG preparation.
Final checks before you archive the originals
Keep the original Lotus files, review a sample from each folder, and store conversion results in a separate output location. For regulated or client data, document who ran the conversion and where the resulting files were stored.
Ready to convert your Lotus 1-2-3 files?
Install the Windows trial and test the full local conversion workflow on up to 25 legacy spreadsheet files before buying a lifetime license.
Free trial
Full app features - up to 25 files
Windows 10 or 11
Same free trial whether you use the Microsoft Store or the offline MSI - pick the option that fits your PC or IT policy.
| Microsoft StoreRecommended | Offline MSIAir-gapped or scripted |
|---|---|
MSI coming soon Same trial as Store |