Legacy ImageMagick Discussions Archive

convert.exe --version
Version: ImageMagick 6.7.6-8 2012-04-22 Q16 http://www.imagemagick.org

convert.exe 1.bmp -units PixelsPerInch -density 600 1.tif

identify.exe -verbose 1.tif
Image: 1.tif
Format: TIFF (Tagged Image File Format)
Class: DirectClass
Geometry: 2650x4475+0+0
Resolution: 1524x1524
Print size: 1.73885x2.93635
Units: PixelsPerInch

Link to the the input image?

Try command like this
convert.exe -units PixelsPerInch 1.bmp -density 600 1.tif