How-ToApril 29, 2026
How to Open and Convert Lotus 1-2-3 Files on Windows 11
A practical guide for opening .123, .wk1, .wk3, .wk4, and .wks spreadsheets without a working Lotus install.
Read full article
Lotus 1-2-3 Conversion Blog
Practical guides for firms modernizing legacy spreadsheet archives without cloud uploads.
ManufacturingApril 25, 2026
Manufacturing ERP Archives: Converting Lotus Spreadsheets Before They Disappear
How manufacturers can modernize production schedules, BOM extracts, and costing sheets stored in Lotus 1-2-3 formats.
Read full article
AccountingApril 22, 2026
Accounting Firms: Handling Client Ledgers Trapped in Lotus 1-2-3
A local conversion workflow for accountants receiving old Lotus spreadsheets during cleanup, tax, or litigation support projects.
Read full article
ComplianceApril 18, 2026
Utilities and Energy: Preserving Compliance Spreadsheets from Lotus Archives
How regulated teams can convert operational models, rate schedules, and compliance workbooks without cloud exposure.
Read full article
Public SectorApril 15, 2026
Municipal Records Migration: Lotus Files in Government Archives
A guide for cities, counties, and public agencies converting historical Lotus spreadsheets for retention and public records workflows.
Read full article
InsuranceApril 11, 2026
Insurance and Actuarial Teams: Modernizing Legacy Lotus Models
How insurers can convert old pricing, claims, actuarial, and underwriting worksheets for review and migration.
Read full article
FinanceApril 8, 2026
Banking Back Office: Converting Historical Lotus Models for Review
Private local conversion guidance for finance teams handling old forecasts, reconciliations, and operational models.
Read full article
EngineeringApril 4, 2026
Engineering Project Controls: Moving Lotus Schedules to Excel and CSV
How engineering and construction teams can preserve legacy schedules, estimates, and project controls spreadsheets.
Read full article
LogisticsApril 1, 2026
Transportation and Logistics: Recovering Forecasts from Lotus Archives
Convert route planning, demand forecasts, and warehouse spreadsheets from Lotus formats without cloud uploads.
Read full article
Data RoomsMarch 28, 2026
Private Equity Data Rooms: Cleaning Up Lotus Spreadsheets Before Diligence
How deal teams can convert legacy spreadsheet packages before review, indexing, or secure sharing.
Read full article
AI / RAGMarch 24, 2026
Preparing Lotus Spreadsheet Archives for AI and RAG Search
How to turn legacy spreadsheet archives into clean text, CSV, and Markdown for private AI workflows.
Read full article
SecurityMarch 20, 2026
Security Guide: Why Legacy Lotus Conversion Should Stay Offline
A practical security checklist for converting sensitive Lotus 1-2-3 archives without online upload tools.
Read full article
Ready to convert your Lotus 1-2-3 files?
Use the same free trial as on our homepage: full features for up to 25 files on Windows 10/11, with all spreadsheet processing kept local.
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 |