InputTestHub

Passport Photo Size Checker

Enter your photo's pixel dimensions and a country, and find out whether the file can produce the required print size and at what effective dpi.

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In short A photo file has no size in millimetres — it has pixels, and the size only appears when you decide what to print it at. That is why "is my photo big enough?" has no answer until you name the print, and why megapixels are the wrong thing to quote: the same file is 1,200 dpi on a passport photo and 90 dpi on a poster. For a 35 × 45 mm passport photo you need 414 × 532 pixels to reach 300 dpi, the normal print minimum, and 827 × 1063 to reach the 600 dpi that many upload portals ask for. The second thing this checks is shape, which is the part people miss. A file whose aspect ratio does not match the required print has to be cropped, and cropping removes part of the picture — so a square photo cut down to 35 × 45 loses the sides, and if your face was framed for the square version the head may end up the wrong height in the result. That is worth knowing before you crop rather than after. What this cannot do is look at the photograph. It knows the file is large enough and the right shape; it cannot see whether the head sits between the millimetres the country asks for, because that depends on where your face is in the frame. Nor can it judge lighting, expression, background shadow or glare on spectacles, all of which reject photographs that are dimensionally perfect.

How to use the Passport Photo Size Checker

  1. Pick where you are applying.
  2. Enter the pixel width and height from the file's properties.
  3. Read whether the shape matches and what dpi you get at the required size.

About the Passport Photo Size Checker

Answers the two questions a file can actually answer — is it the right shape, and does it have the pixels for the print — for 26 national photo specifications.

What people use it for

  • Checking whether a photo from your phone is big enough to print as a passport photo.
  • Finding the effective dpi of a file at a specific print size.
  • Seeing which edges a crop will remove before you make it.

Details

300 dpiThe normal minimum for print
600 dpiWhat many upload portals ask for
35 × 45 mm at 300 dpi414 × 532 px
35 × 45 mm at 600 dpi827 × 1063 px
2 × 2 in at 300 dpi603 × 603 px
Why megapixels misleadResolution only means something against a print size
PrivacyNothing is uploaded. The arithmetic runs in your browser
Shape and resolution are the two things a pixel count can settle, and they are settled here. Everything else about a passport photo needs the photograph itself.

Where this tool stops

It cannot see your picture, so it cannot judge head height, expression, lighting, shadow or background. It also assumes you will print at the exact required size — printing larger and trimming changes the arithmetic.

Frequently asked questions

How many pixels does a passport photo need?
For the common 35 × 45 mm size, 414 × 532 px gives 300 dpi and 827 × 1063 px gives 600 dpi. For the US 2 × 2 inch photo it is 603 × 603 px and 1205 × 1205 px. Anything from a modern phone camera clears both comfortably; the usual problem is shape, not size.
What dpi should a passport photo be?
300 dpi is the practical minimum for printing and 600 dpi is what a lot of online applications require. Note that dpi is not a property of the file — it is the pixel count divided by the print size, so the same photo has a different dpi at every size you print it.
My photo is 12 megapixels. Is that enough?
Almost certainly, and the number does not tell you so on its own. Twelve megapixels at 35 × 45 mm is several thousand dpi; the same file printed as a poster is under 100. What matters is the pixels across the 35 mm this photo has to be, which is what this tool works out.
Does the checker tell me if my head is the right size?
No, and nothing that only sees the pixel dimensions could. Head height depends on where your face sits inside the frame, which requires looking at the image. The country pages give the millimetres to measure against once the photo is printed or cropped.
Is my photo uploaded anywhere?
No — you are typing two numbers, not sending a file. There is no upload here and nothing to upload to. The whole calculation is a division done in your browser.
Does the Passport Photo Size Checker cost anything?
No charge and no sign-up. There is no free tier to run out of because there is no paid tier — inputtesthub.com is funded by advertising rather than by metering the page.
Can you see what I put into this page?
No. The Passport Photo Size Checker runs entirely in your browser using JavaScript. Because the work happens locally, the page also keeps working if your connection drops, and closing the tab is all it takes to discard everything.
What problem does the Passport Photo Size Checker solve?
In practice it gets used for three things: checking whether a photo from your phone is big enough to print as a passport photo. Finding the effective dpi of a file at a specific print size. Seeing which edges a crop will remove before you make it. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
When is the Passport Photo Size Checker not the right tool?
It cannot see your picture, so it cannot judge head height, expression, lighting, shadow or background. It also assumes you will print at the exact required size — printing larger and trimming changes the arithmetic. Knowing where a tool stops being trustworthy matters more than the cases where it works.
Which values should I know?
300 dpi is The normal minimum for print. 600 dpi is What many upload portals ask for. 35 × 45 mm at 300 dpi is 414 × 532 px. These are printed on the page itself, so you do not have to take them on trust.
Is the number rounded?
The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.

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