PHO Converter

Convert PHO files online for free


Drop or upload your .PHO file

How to convert your PHO file

  1. Click the "Select File" button above, and choose your PHO file.
  2. You'll see a preview.
  3. Click the "Convert file to..." button to save your file in the format you want.

Convert PHO to another file type

The converter easily converts your PHO file to various formats - free and online. No Media Player or extra software needed.

  • PHO to MP3
  • PHO to WAV
  • PHO to AAC
  • PHO to FLAC
  • PHO to OGG
  • PHO to WMA
  • PHO to M4A
  • PHO to AIFF
  • PHO to OPUS
  • PHO to ALAC
  • PHO to APE
  • PHO to WV

Convert a file to PHO

The converter also works in reverse, so you can convert other Cad formats to PHO with high quality output.

  • MIDI to PHO
  • AAC to PHO
  • TTA to PHO
  • AU to PHO
  • WV to PHO
  • DTS to PHO
  • MID to PHO
  • FLAC to PHO
  • RA to PHO
  • MP3 to PHO
  • PCM to PHO
  • WAV to PHO

About PHO files

The .PHO file extension most frequently identifies a Gerber RS-274-X photoplotter file, the industry-standard format for fabricating Printed Circuit Boards (PCBs). Generated by Electronic Design Automation (EDA) tools like Siemens PADS or DownStream CAM350, these files contain ASCII vector instructions that guide manufacturing equipment to plot copper layers, solder masks, and drill data. A significant minority of .PHO files are proprietary data files from scientific instruments, such as spectrophotometers (e.g., PG Instruments UV-Win or Jenway), storing photometric measurements.

While .PHO files are critical for production and research, they pose significant accessibility challenges. PCB files are unreadable to standard image viewers or office software, requiring specialized CAM tools to verify designs. Scientific .PHO files suffer from severe vendor lock-in; without the specific instrument software, your experimental data is effectively trapped, making analysis in tools like Microsoft Excel impossible. To overcome these barriers, users should convert PCB-based .PHO files to PDF for team reviews, DXF for integration into AutoCAD, or SVG for web documentation. For scientific data, converting to CSV or XLSX is essential for data interoperability.

Use Convert.Guru to open and convert your PHO file.

Users also converted SPC, DSO, REP, GBR, ZIP, DRL, JPG, RPT, PDO, PDF, PHP, RPMSG and INDD files.



The PHO Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our PHO converter.