If you specifically need a 32-bit installer, you may need to look at the 5.2 series or 5.4 series archives. For example, version 5.2.5 explicitly provided a gp525-win32-mingw.exe binary.
Once you have downloaded the 32-bit executable (e.g., gpXXX-win32-mingw.exe ), follow these steps to set it up: gnuplot download gnuplot 32 bit download
You can browse the SourceForge Files to find the 32-bit .exe or .7z packages. If you specifically need a 32-bit installer, you
Finding a 32-bit version of gnuplot for modern systems has become more complex as recent official releases (such as version 6.0) primarily provide 64-bit binaries for Windows. However, gnuplot remains a powerhouse for 2D and 3D scientific graphing, and compatible 32-bit versions are still available through specific archives and third-party mirrors. Where to Download gnuplot 32-Bit gnuplot 32 bit download