Anyfile
Open file
.wk1Typical support level 3

Open Lotus WK1 Worksheets Online

WK1 and its related WK2, WK3, WK4 and WKS extensions record worksheets from different Lotus 1-2-3 and compatible-product generations. Anyfile uses SheetJS to recover supported cells into a read-only grid.

Choose a .wk1 file

Your file stays on this device

Anyfile reads only the local file you select. Parsing, decoding and rendering happen in this browser tab; the file is not uploaded to Anyfile servers.

What Anyfile can show

  • Legacy worksheet labels, numbers and dates
  • Supported cells from several WK generations

Limits and conditions

  • Macros, graphs and format-generation-specific features are incomplete
  • Old date systems and character encodings require cautious interpretation

IMPLEMENTATION

Viewers responsible for this format

Excel viewer
Read-only workbook parsing and virtualized sheet browsing.
See implementation and open-source credits

Common question

Why do several WK extensions redirect here?

They represent closely related generations with the same inspection task, so one maintained page explains their shared limits without duplicating content.