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Passport Photo Size Converter

Convert passport or visa photo size requirements into pixel dimensions and crop guidance from user-entered inches, millimeters, DPI, and head-size assumptions.

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Inputs

dpi
px
px

Your values stay on this device.

Results

Target Pixel Size
Target Width600
Target Height600
Source Scale Factor2
Head Height Pixel Range300 - 413 px

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Assumptions

  • The calculator converts only the measurements entered by the user.
  • DPI is treated as pixels per inch for the target output.
  • This planning estimate runs locally in your browser from the values you enter. It is not legal advice, not an official government fee or timeline, and not a document or photo acceptance determination.

Sensitivity preview

Required Photo Width -10%: Target Pixel Size 540 x 600 px

Required Photo Width Current: Target Pixel Size 600 x 600 px

Required Photo Width +10%: Target Pixel Size 660 x 600 px

Formula: Width inches = entered width or millimeters / 25.4. Height inches = entered height or millimeters / 25.4. Target pixels = inches x target DPI. Source scale factor = min(source width / target width, source height / target height). Head-height pixels = entered head-height range converted to inches x target DPI.

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About this Passport Photo Size Converter

Photo instructions often mix inches, millimeters, pixels, DPI, head height, and eye-line guidance. This converter turns the measurements you enter into pixel targets and simple crop ratios for planning.

Who this calculator is for

  • Applicants preparing passport, visa, residence, or immigration photos.
  • Families checking photo crop dimensions before printing or uploading.
  • Photographers translating written photo requirements into pixel dimensions.

When to use it

  • Convert required photo width and height into target pixels at a chosen DPI.
  • Estimate whether an existing image has enough pixels for the target size.
  • Translate head-height requirements into pixel ranges for crop planning.

How to use this calculator

  1. Enter the required photo width and height from the official instruction.
  2. Choose whether those dimensions are in inches or millimeters and enter the target DPI.
  3. Enter the existing image pixel dimensions if you want a scale comparison.
  4. Enter head-height requirements only if your instruction provides them.

Key assumptions

  • The calculator converts only the measurements entered by the user.
  • DPI is treated as pixels per inch for the target output.
  • This planning estimate runs locally in your browser from the values you enter. It is not legal advice, not an official government fee or timeline, and not a document or photo acceptance determination.

Accuracy and testing

Review formula sources, default test cases, assumptions, unit handling, rounding rules, and changelog for this calculator.

View accuracy page

How this calculator works

If dimensions are entered in millimeters, they are converted to inches by dividing by 25.4. Required pixels = inches x target DPI. Scale factor = minimum of source width divided by required width pixels and source height divided by required height pixels. Head-size pixels = entered head-size inches x target DPI.
Width inches = entered width or millimeters / 25.4. Height inches = entered height or millimeters / 25.4. Target pixels = inches x target DPI. Source scale factor = min(source width / target width, source height / target height). Head-height pixels = entered head-height range converted to inches x target DPI.

Inputs explained

Required width and height

The official or provider photo dimensions you enter for the specific document type.

Dimension unit and DPI

The unit used in the requirement and the print or upload resolution you want to model.

Source image pixels

The current image pixel size used to check whether the source is large enough for the target.

Head-height range

Optional user-entered head-height requirement converted into pixels for crop guidance.

Understanding your results

The target pixel dimensions show the size implied by your entered requirement and DPI. A scale factor below 1 means the source image is smaller than the target in at least one dimension. This does not guarantee photo acceptance.

Example scenarios

Print-size conversion

Enter a 2 by 2 inch requirement and 300 DPI to get a 600 by 600 pixel target.

Millimeter instruction

Enter a 35 by 45 millimeter requirement and the DPI requested by the print shop or upload tool to get pixel dimensions.

Key Features

  • Instant Calculation
  • Private & Secure
  • Mobile Optimized

Things to Keep in Mind

This converter does not inspect image quality, background, shadows, face position, glasses, expression, recentness, file size, compression, or official portal validation rules.

Tips & Best Practices

  • Use the exact dimensions, DPI, head-size range, background, and expression rules from the official instruction.
  • Start with a source image larger than the required pixel dimensions to avoid upscaling blur.
  • Leave room for the final portal or printer to crop only if the official instructions allow it.

Frequently Asked Questions

Does this know every country passport photo rule?
No. Enter the dimensions and DPI from the official instruction for your specific document and date.
Will this guarantee my photo is accepted?
No. It only converts measurements. Acceptance depends on many requirements beyond size.
Is my photo uploaded or analyzed?
No. This calculator only uses the numbers you type into the browser.