CAL Converter

Use our trusted tool with a wide range of features to convert CAL images in seconds. It provides an advanced solution for file conversion and processing.

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reaConverter
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CAL Files
Online

How to Convert .cal Images in Bulk

1. Install reaConverter

Download reliable CAL conversion software to convert multiple .cal files and folders in one go.
reaConverter logo
Install reaConverter

2. Select CAL Files

Select CALs from a folder or drag and drop them into reaConverter, then choose the desired output format.
reaConverter - Load CAL files

3. Start Conversion

Click Convert to start the bulk conversion of all selected CAL images. The process will begin right away.
reaConverter - Start CAL conversion

Convert CAL on your PC

For quick and effortless CAL file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.

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Do more with your images

Converting CAL images for use in a workflow? Touch up, transform, apply editing and effects to your images during conversion.

Our range of editing options includes such image processing actions as Resize, Rotate, Crop, Color Replace, Watermarks and more. Adjust actions include RGB, HLS, HSV, Brightness and Contrast. Auto-processing options are also available, such as auto-rotate and auto-crop.

Image editing tools

User Reviews

Average User Rating:
Last updated on February 26, 2025
"Security was our top concern when evaluating file conversion tools. reaConverter’s offline mode and role-based access controls let us lock it down for sensitive environments. No unexpected network calls or bloat — just clean, fast conversions. Even passed our pen-testing scans without a hitch."
Marcus White
Healthcare IT
"Our volunteer team uses reaConverter to prepare images for fundraising campaigns. The learning curve was minimal, and the results are professional-grade. The customer support team even helped us customize a workflow — fantastic service!"
Jason P. Bailey
Non-Profit Coordinator
"This program is incredibly simple and user-friendly — even beginners can use it with ease. It supports batch processing, works offline, and runs smoothly on my aging Acer Aspire laptop. Best of all, the output quality is outstanding!"
Kevin Harris
Happy User
"I run a small design agency, and reaConverter has saved me countless hours. The batch processing is lightning-fast, and the ability to convert hundreds of files into different formats at once is a game-changer. Highly recommend!"
Mark T.
Satisfied Customer
"I deal with hundreds of images daily, and reaConverter has been a lifesaver. The Watch Folders feature lets me automate file conversions without lifting a finger. I set up a folder for incoming files and it automatically resizes, renames, and converts them into the formats I need. It's like having a personal assistant!"
Sarah T.
Graphic Designer
"We use reaConverter in our department to handle image and document conversions for multiple teams. The Watch Folders function is brilliant — I configured different folders for different workflows, and now everything happens automatically in the background. No more manual conversions or missed files. Rock-solid performance!"
James L.
IT Manager

CAL images: Frequently Asked Questions

What are CAL files?

The CAL Raster file format is a graphics file format used by the CALS (Continuous Acquisition and Life-cycle Support) standards for the United States Department of Defense. CAL Raster files are typically used to store and exchange monochrome or grayscale images, such as engineering drawings, maps, and schematics. The format is based on the MIL-DTL-25038 standard, which outlines the requirements for technical illustration in the defense industry. CAL Raster files are typically saved with a .cal or .rle file extension and are compressed in a run-length encoding (RLE) format to reduce the file size.

Can reaConverter open CAL files?

reaConverter fully supports the CAL image format – open, edit, and export CAL files to any other popular file format with ease.

How do I change CAL to another format?

reaConverter is a user-friendly tool for converting CAL files. Once installed on your computer, it allows you to convert all your .cal files at once with just a few clicks. You can even convert cal images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert CAL online?

If you only want to convert a few CAL images, you are welcome to try our free online CAL converter.

How can I turn CAL files on my computer to another format?

The best way to convert CAL images on your PC is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from CAL.

How can I automate CAL files conversion?

reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.

Can I convert CAL files using scripts or the command-line interface?

reaConverter provides full access to all its features from the Windows command-line shell, including the command-line cal converter.

What else can I do with reaConverter?

Convert Gerber imagesCrop imagesConvert vector imagesConvert RGB to CMYKConvert RAW files

What formats can I convert a CAL file to?
ai  apng  avif  bmp  bpg  cg4  cgm  cin  dcx  dds  dgn  dis  drw  dwf  dwg  dxf  emf  epi  eps  fax  fits  flif  gbr  gif  glb  gltf  hpg  hru  ico  iff  jp2  jpeg  jpg  jxl  jxr  mif  mtv  pcl  pct  pcx  pdf  pgm  pic  plt  png  ppm  prc  ps  psd  qoi  qrt  rad  riff  rla  sgi  shp  step  stl  stp  svg  svgz  tga  tif  tiff  webp  webpll  wmf  wmz  wpg  wrl  x3d  xbm  xpm 
What types of files can I convert to CAL format?
!c  $c  $s  000  001  2bp  2d  301  3d  3ds  3fr  3mf  411  4bt  73i  82i  83i  85i  86i  89i  92i  a64  abc  abic  abs  ac  ac3d  acc  ace  acorn  adt  aff  afp  afx  ai  aip  alias  als  ami  amj  ani  apng  apx  arf  ari  arn  art  arw  ase  ask  atk  avif  avs  awd  b&w  b16  b3d  b_w  bay  bfl  bfli  bfx  bga  bif  big  bld  blend  blk  bm  bmf  bmg  bmp  bmq  bmx  bn  bna  bob  bot  bpg  bpr  brk  brt  bs  bsg  btn  bum  bvh  bw  c4  cals  cam  can  cap  car  cat  cbm  cbr  cbz  cdr  cdu  ce  ce1  ce2  cel  cg4  cgm  cin  cine  cip  cit  clo  clp  cmp  cmt  cmu  cmw  cmx  cob  cp8  cpa  cpc  cpi  cpt  cr2  cr3  crd  crg  crw  cs1  csm  ct  cut  cvp  dae  dat  dbw  dc2  dc3  dcm  dcr  dcs  dcx  dd  dds  dgn  dib  dic  dicom  dis  djvu  dng  doc  docx  dol  doo  dpx  drd  drf  drl  drw  drz  dsi  dst  dta  dwf  dwfx  dwg  dxf  e00  ecc  ef3  efx  ei  eidi  eip  emf  emz  enff  epa  epi  eps  erf  esm  ets  exr  f96  fac  face  fax  fbm  fbx  fcx  fff  fi  fit  fits  flc  fli  flif  fmf  fp2  fpg  fpr  fpt  fpx  fre  frm  fsy  ftf  fts  fun  fx3  fxd  fxm  fxo  fxr  fxs  g16  g3  g3n  g4  gaf  gb  gbl  gbo  gbp  gbr  gbs  gbx  geo  geojson  geotiff  gg  gif  gig  gih  gko  glb  gltf  gm  gm1  gm2  gm4  gmf  gml  gmt  gp4  gpb  gpx  graf  grb  gro  gro2  gro4  gtiff  gtl  gtm  gto  gtp  gts  gtz  gun  gxt  hdp  hdr  hdru  hed  heic  heif  hf  hg  hgl  hir  hmb  hmp  hp  hp1  hp2  hpg  hpgl  hpi  hr  hru  hrz  i17  i18  ia  ib7  ibg  ica  icb  icl  icn  icns  ico  idc  if9  ifc  ifczip  iff  ifl  iim  iimg  iiq  im1  im5  ima  img  imi  imt  info  ioca  ipg  iph  ipt  iris  irr  irrmesh  ish  ism  iss  itg  j2c  j2k  j6i  jbf  jbg  jbig  jfi  jfif  jif  jiff  jig  jj  jp2  jpc  jpe  jpeg  jpf  jpg  jpm  jps  jpx  jtf  jxl  jxr  k25  kap  kc2  kdc  kfx  kml  kmz  koa  kps  kqp  kra  lbm  lda  lff  lif  lvp  lwi  lwo  lws  lxo  m3d  m8  mac  mag  map  mbfavs  mbfs  mbm  md2  md3  md5  mdc  mdl  mef  mesh  mgr  mh  mic  mif  miff  mil  mim  mix  mng  mos  mot  mph  mpnt  mpo  mrf  mrw  ms3d  msk  msp  mtv  nap  nav  ncd  ncr  nct  ndo  nef  neo  nff  nitf  nlm  nmp  nol  npm  nrw  nsr  ntf  nva  oaz  obj  obm  ocp  off  ofx  ogex  oil  orb  orf  oxps  p64  p7  pac  pan  pat  pax  pbm  pbt  pc  pcc  pcd  pcl  pcp  pct  pcx  pd  pdb  pdd  pdf  pdn  pdp  pds  pdx  pe4  pef  pen  pfr  pg  pgc  pgf  pgm  ph  php  pi  pic  picio  pict  pig  pix  pixar  pk3  plc  plo  pls  plt  ply  pm  pmg  pmp  pmx  png  pnm  ppm  ppp  pps  ppt  prc  prf  pri  prj  prn  prt  ps  psa  psb  psd  pse  psf  psp  pspbrush  pspframe  pspimage  pspmask  pst  ptk  ptoca  ptx  pwp  pxa  pxb  pxl  pxn  pxr  pxs  pzl  pzp  q0  q3d  q3o  q3s  qdv  qoi  qrt  qti  qtif  qtk  qtl  r3d  rad  raf  ras  rast  raw  rdc  rec  rgb  rgh  riff  ris  rix  rla  rlb  rlc2  rle  rp  rpbm  rpm  rpt  rpt  rs  rsb  rtf  rw2  rwl  rwz  sar  sc  sc2  sci  scn  scr  sct  scx  sd0  sd1  sd2  sdg  seq  sff  sfw  sgi  shp  si  sib  sid  sim  sir  sj1  sk  sk1  skn  skp  smb  smd  smp  smt  sna  sol  spc  spl  sps  spu  sr  sr2  srf  srw  ssb  ssi  ssp  sst  st4  st5  st6  st7  st8  stc  step  sti  stl  stp  sts  stw  stx  sul  sun  suniff  svg  svgz  svs  swf  syj  syn  synu  taac  tab  tap  tdi  tdim  ter  tex  tg4  tga  tif  tiff  til  tim  tjp  tm2  tn1  tn2  tn3  tnl  tny  top  trp  tsk  tub  txt  uc  uni  upi  uyvy  v  vda  vdx  vff  vfx  vi  vic  vicar  vid  vif  viff  vit  vob  vpb  vsd  vsdm  vsdx  vsi  vst  vta  vtf  wal  wb0  wb1  wbc  wbp  wbz  wdp  webp  webpll  wfx  wmf  wmz  wpd  wpg  wrl  wzl  x  x11  x3d  x3f  xar  xbm  xcf  xfig  xgl  xif  xim  xln  xpm  xps  xv  xwd  yuv  zae  zbr  zgl 

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Explore our efficient CAL file converter that saves you time and effort by converting multiple .cal files into different formats.
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