Convert Lotus 1-2-3 to CSV
Extract clean, importable data from Lotus 1-2-3 spreadsheets — in bulk, offline — ready for databases, scripts, and modern tools.
TL;DR
The free trial batch-extracts the data from .wk1/.wk3/.wk4/.123 files into clean CSV — no Lotus codes, no binary. Perfect for database imports, migration, and scripting. 25 free files.
How to convert Lotus 1-2-3 to CSV — step by step
Install LegacyFileConverter (free trial)
Microsoft Store or offline MSI — 25 free conversions.
Point it at your archive
Select a folder and the converter recursively finds every Lotus 1-2-3 spreadsheet inside.
Choose CSV output
Select CSV. Need editable workbooks too? Add XLSX output in the same run.
Convert and load the data
Thousands of files convert in one pass, locally and in parallel. Import the CSVs into your database or notebook.
Why convert Lotus 1-2-3 files to CSV?
CSV is the universal data format: every database, spreadsheet, and language reads it. Converting Lotus 1-2-3 archives to CSV makes decades of tabular data instantly importable into the systems you use today.
For migrations and ETL work, CSV is the cleanest handoff — no proprietary format to wrestle with, just rows and columns ready to load into Postgres, pandas, Power BI, or anything else.
Safer than online Lotus 1-2-3 converters
Searching for a "free online Lotus 1-2-3 to CSV converter" means uploading your files to someone else's server — a real problem for confidential documents, personal photos, and any private archive. LegacyFileConverter runs entirely on your Windows PC: files are converted locally and never leave your machine. It also handles whole folders in one batch, which no upload-one-file-at-a-time website can do.
The free trial converts up to 25 files with every feature enabled — for most people that's the whole job. Larger archives are covered by a one-time $99 lifetime license. No subscription, no watermarks, no uploads.
Frequently asked questions
Is there a free way to convert Lotus 1-2-3 to CSV?
Yes. The free trial of LegacyFileConverter converts up to 25 files with full features — no signup, no watermarks. For unlimited conversions, a lifetime license is a one-time $99 (no subscription).
Is this an online converter? Do my files get uploaded?
No. LegacyFileConverter is a Windows desktop app — every conversion runs 100% locally on your PC. Nothing is uploaded, which matters for confidential documents and personal files that shouldn't be pasted into a random website.
Can I convert a whole folder of Lotus 1-2-3 files at once?
Yes. Point LegacyFileConverter at a folder (it scans subfolders recursively), select CSV as the output, and it batch-converts every .wk1/.wk3/.wk4/.123 file in one run.
Can this app convert more than just this one format?
Yes — that's the point. LegacyFileConverter handles 100+ legacy and modern formats in a single app: WordPerfect, Lotus 1-2-3, Quattro Pro, Microsoft Works, XPS, HEIC, Photoshop (PSD), TIFF, AVIF, and many more. One tool covers your whole mixed archive.
What happens to multiple sheets in one Lotus file?
Multi-sheet Lotus workbooks are handled per-sheet on export so each tab’s data lands in a clean, importable CSV.
Related
Unlock the data inside your Lotus archive
Free trial converts 25 files to CSV — batch, offline, clean output.
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 Store InstallerRecommended | Local InstallerDirect download |
|---|---|
Download MSI Same trial as Store |
Requires Windows 10 or 11. No subscriptions. 100% Windows Native.