---
name: "w90chk2chk.x"
section: "1"
platform: "linux"
package: "wannier90"
version: "3.1.0+ds-10"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/w90chk2chk.x"
---

# w90chk2chk.x(1)

convert wannier90.x checkpoint file between machine-dependent and machine-independent formats

## NAME

w90chk2chk.x - convert wannier90.x checkpoint file between machine-dependent and machine-independent formats

## SYNOPSIS

w90chk2chk.x \[options\] \[seedname\]

## OPTIONS

\-u2f, -export\
         Convert from unformatted (standard) format to formatted format, to export\
         the checkpoint file on a different machine.\
         The seedname.chk file is read and the seedname.chk.fmt file is generated.

\-f2u, -import\
         Convert from formatted format to unformatted (standard) format, to import\
         the checkpoint file seedname.chk.fmt from a different machine.\
         The seedname.chk.fmt file is read and the seedname.chk file is generated.

seedname\
         If a seedname string is given the code will read its input from a file\
         seedname.chk. The default value is wannier. One can also equivalently\
         provide the string seedname.chk instead of seedname.