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. 15 free files.
How to convert Lotus 1-2-3 to CSV — step by step
Install Legacy File Converter (free trial)
Download the Windows installer — free trial.
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. Legacy File Converter 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 10 files with every feature enabled — for most people that's the whole job. Larger archives are covered by a one-time $79.95 Standard 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 Legacy File Converter converts up to 10 files with full features — no signup, no watermarks. For unlimited conversions, a Standard license is a one-time $79.95 (no subscription).
Is this an online converter? Do my files get uploaded?
No. Legacy File Converter 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 Legacy File Converter 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. Legacy File Converter 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 10 files to CSV — batch, offline, clean output.
Free trial
Full app features · up to 10 files
Windows 10 or 11
Same free trial as always — download the Windows installer and convert locally on your PC.
Direct Windows installer · offline MSI
Is this safe? — publisher, installer, and SmartScreen help
Requires Windows 10 or 11. No subscriptions. 100% Windows Native.