The editor opens on a 40 × 50 mm photo frame, 472 × 591 pixels at 300 DPI, the size Hong Kong's Immigration Department states for the HKSAR passport. Its head band, its online file rule and the other forms that use 40 × 50 mm are on the page, each with its source. One of the passport size photo sizes.
40x50 mm photo size: who asks for it
In pixels at 300 DPI
472 × 591 pxcomputed at 300 DPI
HKSAR passport, on paper
40 × 50 mm, head 32 to 36 mm, whiteHong Kong Immigration Department
HKSAR passport, online
JPEG, 5 MB or below, at least 1200 × 1600 pxHong Kong Immigration Department
Hong Kong visa forms, on paper
40 × 50 up to 45 × 55 mmImmD forms ID 1003A, ID 995A
Australia, on paper
35 to 40 × 45 to 50 mm, face 32 to 36 mmAustralian Passport Office
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Source: photo.jpg, 576.8 KB at 1920×1280, through the preset this page opens on (the centre cropped to the ratio and scaled to the size), then the engine at its defaults. The row is the real output.
Every byte count is the size of the actual file our engine produced from the named source, the same bytes you would download, not an estimate. The reference photo is one of our own photographs, an iguana on a branch, and the camera photo is a real one too. Drop your own file into the tool above to rerun any of them. How we measure names the sources and the settings.
Answered
What is 40 × 50 mm in pixels, inches and cm?
472 × 591 pixels at 300 DPI, 945 × 1181 at 600 DPI, 1.57 × 1.97 inches, 4 × 5 cm.
Each side is millimetres times the dots per inch divided by 25.4, rounded on its own: 40 ÷ 25.4 × 300 is 472.4 and 50 ÷ 25.4 × 300 is 590.6. So the frame is 472 × 591, not the 472 × 590 one converter prints or the 471 × 739 another does. It is a 4:5 portrait, the shape of an 8 × 10 inch print. One more thing the search mixes in: 40 × 50 cm is a poster and a frame size, a hundred times the area. This page is the ID photo.
Compared
Which documents use a 40 × 50 mm photo?
Hong Kong’s passport first.
The HKSAR passport states it exactly; Hong Kong’s paper visa forms, Australia and Belarus state a range or a minimum that includes it. Each row is the authority’s own wording from the page named in the caption.
Document
Size
Head
Background
Source
HKSAR passport, Document of Identity
exactly 40 × 50 mm
32 to 36 mm chin to crown
plain white
Hong Kong ImmD
Hong Kong visa, entry and re-entry forms
40 × 50 up to 45 × 55 mm
full face, no hat
plain, light
ImmD forms
Australian passport and citizenship, on paper
35 to 40 by 45 to 50 mm
32 to 36 mm chin to crown
plain white or light
passports.gov.au, Home Affairs
Belarus, at its embassies
at least 40 × 50 mm
32 to 35 mm, margin above the hair
plain, light
Embassy of Belarus
Colombia, first identity card abroad
4 × 5 cm
2.7 cm with the hair, 1 cm top margin
white
Consulate in Frankfurt
Hong Kong: the Immigration Department's photograph requirements for travel documents and forms ID 1003A, ID 995A and ID(E)73. Australia: the Australian Passport Office's photo page (an archived copy of 11 June 2026; the live page timed out) and Home Affairs' citizenship page. Belarus: its embassy in the USA. Colombia: its consulate in Frankfurt. Each as read in September 2026; the authority's page wins.
Two claims the makers repeat are not on an official page we could read. Sudan’s embassies ask for a passport-sized photo and state no millimetres, and Macao’s identity bureau states 35 × 45 mm, not 40 × 50. For a country not in the table, read its own page for the size, then type it into Custom size in mm. The 35 × 45 frame has its own page, the 35 × 45 mm photo.
Answered
What size is a digital Hong Kong passport photo?
A JPEG of 5 MB or below, at least 1200 × 1600 pixels from a camera, or a 40 × 50 mm print scanned at 600 dpi: the Immigration Department’s rules for the online and app route.
The 472 × 591 export is a print file, and it is under that minimum. The camera figure is a 3:4 shape and the frame is 4:5, so a crop that clears both sides is 1280 × 1600: type it into Custom size as px, then Apply, and the head band stays where you put it. The scanner route is the other way round: print the 40 × 50 photo and scan it at 600 dpi, which comes to 945 × 1181. Either way the background is plain white. A photo supplier sometimes quotes 2 MB; that is GovHK’s limit for copies of supporting documents, and the photo’s own limit is 5 MB.
Answered
How big should the head be in a 40 × 50 mm photo?
32 to 36 mm from chin to crown for Hong Kong and Australia, which is 64% to 72% of the frame, 378 to 426 pixels of the 472 × 591 export.
The other authorities draw the band elsewhere. Belarus’s embassies ask for 32 to 35 mm with a clear margin above the hair; a Colombian consulate asks for a 27 mm head, hair included, under a 1 cm margin at the top, which is a smaller head in the same frame. The makers print one head size for every country, 34 or 35 mm, from no authority we could find. Drag the frame on the stage until the chin and the crown sit inside your authority’s band, and leave room above the hair.
Answered
Can I use a 35 × 45 photo for Hong Kong?
No: the paper visa and re-entry forms take nothing smaller than 40 × 50 mm, and the HKSAR passport wants exactly 40 × 50.
The forms’ box reads not smaller than 50 × 40 mm and not larger than 55 × 45 mm, so 40 × 50 is the smallest photo that passes and 45 × 55, 531 × 650 pixels here, the largest. A 35 × 45 photo, 413 × 531 pixels, is narrower and shorter than both. Australia is the other way round: its paper range runs from 35 × 45 to 40 × 50 mm, so either frame fits there. Crop to the size of the form in front of you, not to the size you already have.
Answered
What is a 35 × 40 mm photo, and who asks for it?
413 × 472 pixels at 300 DPI, a 7:8 portrait, 5 mm shorter than 35 × 45.
The Italian consulate in Stuttgart asks for 3.5 × 4.0 cm on its adult passport form, and Italian police and consular pages give a width of 35 to 40 mm. That is the case we could read. Many people typing 35x40 want the 35 × 45 frame, which Italy’s Toronto consulate asks for on its own page. To make a 35 × 40 photo, unlink the sides in Custom size, type 35 and 40 in mm and Apply: the frame locks to 7:8 and the export is 413 × 472.
Answered
Can I print 40 × 50 mm photos at home?
Yes for a form that names no printer: six fit on a 4 × 6 inch sheet, but only with cutting gaps of 1.2 mm or less.
Three 50 mm photos use 150 of the sheet’s 152.4 mm, so four, two by two, are the safe layout with room for the scissors. A 10 × 15 cm sheet is 150 mm long, so six fit only edge to edge. Australia is strict about the print: dye-sublimation on glossy paper of at least 200 gsm, not an inkjet, and it does not recommend online photo services or apps. For an Australian passport, take the photo to a photographer; for the others, save the JPEG here and print it at the size, with no scaling in the print dialog. The file is small: our reference photo at 472 × 591 came to 49 KB.
Be sure first
When the 40 × 50 preset is the wrong tool
A 40 × 50 cm print or frame?
That is a poster, a hundred times the area of this photo. Resize in cm with the unit set to cm, or pick the print size your lab states.
A UK, EU or Schengen photo?
Those forms state 35 × 45 mm, a 7:9 frame; its page carries the UK and French rules.
A US passport or visa?
That is a 2 × 2 inch square. The 2 × 2 inch page opens on it, with the State Department rules.
A country whose rule we have not read?
Unlink the sides, type its size into Custom size in mm, and read its own page for the head and the background. The makers' one size for every country is not a rule.
The size is already pressed above. One drop settles most of these.
Q:What is 40mm x 50mm in pixels?
472 × 591 pixels at 300 DPI, which is what the editor exports, and 945 × 1181 at 600 DPI. The arithmetic is millimetres times the dots per inch divided by 25.4, each side rounded: 50 ÷ 25.4 × 300 is 590.6, so 591, not the 590 some converters print. An online form that states pixels checks its own number instead; for the Hong Kong passport that is at least 1200 × 1600.
Q:What is 40x50 mm in inches?
1.57 × 1.97 inches: 40 and 50 divided by 25.4, the inch defined as exactly 25.4 mm. It is a 4:5 portrait, the same shape as an 8 × 10 inch print, and a little wider than the 35 × 45 mm frame most of Europe uses. Whichever unit the form writes, millimetres, centimetres, inches or pixels at 300 DPI, it is one frame.
Q:Is the 4x5 cm photo size the same as 40x50 mm?
Yes: 4 cm is 40 mm and 5 cm is 50 mm, so both are 472 × 591 pixels at 300 DPI. The unit follows the form. Hong Kong's Immigration Department writes 40 mm by 50 mm; a Colombian consulate's checklist writes 4 cm by 5 cm. Crop once here and the same file prints at either size. Only the head band and the background change with the authority.
Q:Which documents need a 40x50 mm photo?
The HKSAR passport and the Hong Kong Document of Identity, exactly 40 × 50 mm on the Immigration Department's page. Its paper visa and re-entry forms take 40 × 50 up to 45 × 55 mm. Australia's paper passport and citizenship photos may be up to 40 × 50, Belarus's embassies ask for at least 40 × 50, and a Colombian consulate for 4 × 5 cm.
Q:What is the Hong Kong passport photo size?
40 mm wide by 50 mm high, with 32 to 36 mm from chin to crown and a plain white background, on the Immigration Department's photograph requirements for the HKSAR passport. No head dress, no heavy make-up, no hair across the eyes, no flash reflection or shadow. The page states no age, and the forms ask for a recent photo, so shoot a new one.
Q:What size is a digital Hong Kong passport photo?
A JPEG of 5 MB or below, at least 1200 × 1600 pixels from a camera, or a 40 × 50 mm print scanned at 600 dpi: the Immigration Department's rules for its online and app route. The 472 × 591 export here is below that. Type 1280 × 1600 into Custom size as px, the 4:5 frame at a size that clears both sides.
Q:Is the Hong Kong visa photo size 40x50?
At the least: on paper, not smaller than 50 × 40 mm and not larger than 55 × 45 mm, the box on forms ID 1003A and ID 995A; the re-entry permit notes state the same range. So 40 × 50 is the smallest that passes, and a 35 × 45 photo is too small. The online visa service asks only for a recent photo, a file of 5 MB or below.
Q:What is the head size for a 40x50 mm photo?
It depends on the authority. Hong Kong and Australia ask for 32 to 36 mm from chin to crown, 64% to 72% of the frame. Belarus's embassies ask for 32 to 35 mm with a clear margin above the hair. A Colombian consulate asks for a 27 mm head, hair included, under a 1 cm top margin. The single 34 or 35 mm the makers print is theirs.
Q:What size is an Australian passport photo in mm?
35 to 40 mm wide and 45 to 50 mm high, with the face 32 to 36 mm from chin to crown, less than six months old, on the Australian Passport Office's photo page. So a 40 × 50 photo fits the top of the range, and so does 35 × 45. It asks for dye-sublimation prints on 200 gsm glossy paper, not inkjet prints.
Q:What size is a Sudan visa photo?
Sudan's embassies in Washington and London ask for one passport-sized photo and state no size in millimetres. The 40 × 50 mm figure, and the 34 or 35 mm head, come from photo-maker sites, not from a Sudanese page we could read. Ask the embassy or consulate you apply to, and crop to the size it names; 40 × 50 is one drop here.
Q:What is 35x40 mm in pixels?
413 × 472 pixels at 300 DPI, a 7:8 portrait, 5 mm shorter than 35 × 45. The Italian consulate in Stuttgart asks for 3.5 × 4.0 cm on its adult passport form. To make one, unlink the sides in Custom size, type 35 and 40 in mm and Apply. Most people typing 35x40 mean 35 × 45, which has its own page.
Q:How many 40x50 mm photos fit on a 4x6 print?
Six, two across and three down, but only with cutting gaps of 1.2 mm or less, because three 50 mm photos use 150 of the sheet's 152.4 mm. Four fit with room to cut. On a 10 × 15 cm sheet, three 50 mm photos fill the 150 mm exactly, so six fit only edge to edge. Check the lab's own template before you order.
Q:Do you keep my ID photo?
No. We keep nothing: files are processed and wiped automatically, never archived and never used for anything else. Saving strips EXIF metadata, including the GPS position a phone writes into the file. There is no account, no watermark and no charge for the 40 × 50 crop, and the free allowance is 300 images a day.
The frame is pressed above at 472 × 591 pixels. Drop the photo, put the head in your authority's band and save; type 1280 × 1600 first for the online Hong Kong passport.
