Bulk-Convert Lotus 1-2-3
Files Locally
Convert legacy Lotus spreadsheets to XLSX, PDF, HTML, Markdown, CSV, or XLS without uploading confidential finance, operations, engineering, or compliance data to the cloud.
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 |
|---|---|
Download MSI Same trial as Store |
Requires Windows 10 or 11. No subscriptions. Built for local spreadsheet migration.
Don't Risk Legacy Spreadsheet Data with Free Cloud Converters
Lotus archives often contain payroll, pricing, client ledgers, forecasts, and regulated operational records.
The Risk
Cloud converters may retain confidential spreadsheets or process them outside your approved data boundaries.
The Scale Problem
Opening files one at a time does not work for departmental archives or acquisition data rooms.
The Format Gap
Old .123, .wk1, .wks, and .wb* files need modern outputs before teams can search, analyze, or preserve them.
Professional Spreadsheet Recovery, Total Data Sovereignty
Built for finance, ops, compliance, and IT teams who can't compromise on security or fidelity
Multi-Format Output
Tick XLSX, CSV, and PDF and convert to all three in a single pass — no need to run the converter once per format. Process your archive once, get every output your downstream teams need.
Windows Explorer Quick Convert
Right-click a Lotus file or folder in Windows Explorer and launch a focused quick-convert workflow without opening the full app first — ideal for one-off recoveries and help-desk migration tasks.
Watch Folders
Point the app at a migration drop zone and any new .wk1, .wk3, .wk4, or .123 file that lands there is converted automatically — perfect for staged retirement of an old file server or department share.
100% Local Processing
Lotus Converter works where your spreadsheets are. Workbooks stay on your machine, behind your firewall — suitable for SOX, GLBA, HIPAA, and contractual confidentiality obligations that prohibit cloud uploads of regulated data.
Content-Based Lotus Detection
Finds Lotus 1-2-3 workbooks even when the .123, .wk1, .wk3, .wk4, or .wks extension is missing — essential for retired file servers and DOS-era archives where files were renamed or stripped of extensions.
True Bulk Automation
Don't just convert files; convert archives. Point Lotus Converter at entire folder trees and it recursively scans your directories, processing thousands of legacy workbooks in seconds rather than days.
Folder Structure Preservation
Choose how your converted output is organized. Mirror the original archive's department, year, or business-unit folder hierarchy in a new location, or write converted files directly alongside the originals.
Multi-Sheet Workbook Fidelity
Purpose-built for Lotus 1-2-3. We preserve every tab in a multi-sheet .wk4 or .123 workbook in the XLSX output, keep number formats intact, and translate cells, formulas, and named ranges where the source data allows.
AI-Enabling Output
Export to CSV and Markdown for RAG, LLMs, and code-interpreter agents. Clean, structured tabular text is the fuel for embeddings and numeric retrieval — Lotus Converter turns legacy Lotus into AI-ready content without sending data to the cloud.
No Lotus 1-2-3 Needed
Don't hunt down a 25-year-old Lotus or SmartSuite license just to open old workbooks. Lotus Converter is fully standalone — no IBM/Lotus software, no Excel add-ins, no third-party runtimes. Install and convert.
Supported formats
Convert common Lotus 1-2-3 and Symphony-era spreadsheet files into modern formats for review, archive, analytics, and AI preparation.
Inputs
.123, .wk1, .wk3, .wk4, .wks, .wb1, .wb2, .wb3
Outputs
XLSX, PDF, HTML, Markdown, CSV, XLS
Industry solutions
Lotus 1-2-3 archives are most common in firms with long-lived operational, financial, and compliance records.
Vote on the Lotus roadmap
The public roadmap uses the same feature options managed in the admin dashboard, so visitor votes and admin priorities stay aligned.
Formula and named-range preservation report
Flag formulas, named ranges, and calculation areas that may need review after Lotus-to-Excel conversion.
Archive ZIP batch input
Drop a ZIP of Lotus files into the app and convert the extracted spreadsheet set into a mirrored output folder.
Conversion QA sampling report
Generate a review checklist that samples converted files by extension, folder, and result status for migration sign-off.
CSV encoding and delimiter presets
Choose delimiter, quote, and encoding presets for downstream analytics, database imports, and legacy ETL pipelines.
Command-line batch runner
Run repeatable Lotus conversion jobs from scripts for IT teams, records departments, and locked-down migration workstations.
Need to convert more than Lotus spreadsheets?
Old archives are rarely just one format. Legacy File Converter is the universal app from the same team — it opens and converts documents, spreadsheets, presentations, and images across 100+ legacy and modern formats, entirely offline on your PC.
Convert anything to
100% offline · no uploads · batch-convert whole folders at once.
Start with the full-feature trial
Test up to 25 Lotus files locally, then unlock unlimited conversion with 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 |
|---|---|
Download MSI Same trial as Store |