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Resize a photo to 35×45 mm (413×531 pixels)
A 35×45 mm print at 300 DPI is 413×531 pixels. Set 35×45 mm and 300 DPI in the panel and choose crop to fill: a 4:3 phone photo loses 41.7% and still gives 1,707 pixels per inch. As a JPEG, a head-and-shoulders portrait comes to about 41.2 KB at the panel's default quality 85 and 31.2 KB at quality 75.
35×45 mm at 300 DPI (413×531 px)
JPG · no file-size limit · 35x45 mm at 300 DPI · white background
No file-size limit is set: PixelFit saves at high quality and changes only the format and any pixel size you set. 35x45 mm at 300 DPI is 413x531 pixels.
Fit, background and padding crop to fill · white background
Saving presets is part of Pro.
The result appears here: the exact byte count, pixel size and quality, the size before and after, a preview and a download button.
The batch kit (one ZIP for up to 500 photos, several photos merged into one PDF) is part of Pro.
35×45 mm at a glance
| Physical size | 35×45 mm = 1.38×1.77 in |
|---|---|
| Pixels at 300 DPI | 413×531 px (219,303 pixels, 0.22 MP) |
| Shape | 7:9, portrait (width ÷ height = 0.7778) |
| From a 12 MP phone photo | 1,707 pixels per inch after the crop to fill (41.7% cut) |
| Copies per sheet | 8 on 4×6 in · 36 on A4 · 36 on US Letter |
| At 600 DPI | 827×1063 px (0.88 MP) |
| Resampling passes from a phone photo | 2352×3024 crop → 1176×1512 → 588×756 → 413×531 |
| Estimated JPEG (portrait photo, quality 75, 300 DPI) | 31.2 KB |
| JPEG without a KB limit (panel default, quality 85) | 41.2 KB |
How 35×45 mm turns into pixels
An inch is exactly 25.4 mm, so at 300 DPI the pixel size is 35 mm ÷ 25.4 × 300 = 413.386, rounded to 413 px wide, and 45 mm ÷ 25.4 × 300 = 531.496, rounded to 531 px tall. 35×45 mm is a portrait shape with sides in the ratio 7:9 (0.7778 as a decimal), 1.38×1.77 in in the other unit.
The same 35×45 mm needs 276×354 px at 200 DPI and 827×1063 px (0.88 MP) at 600 DPI. PixelFit writes the DPI you set into the JPEG header (the JFIF density field), so print software that reads it knows the file is meant to come out at 35×45 mm.
Where 35×45 mm is asked for
Each line comes from the official notice listed under Sources, checked October 2026. Rules change: verify with the notice before you submit.
- UK printed passport photos: 45 mm high by 35 mm wide. The head, crown to chin, must be 29 mm to 34 mm high.
- At 300 DPI that head height of 29 to 34 mm is 343 to 402 px of the 531 px frame (64.4% to 75.6% of the height).
Is your photo sharp enough for 35×45 mm?
After the crop to fill, this is how many source pixels land on each inch of 35×45 mm. Above 300 DPI the picture is reduced to 300 DPI; below it, PixelFit has to enlarge the crop and fine detail softens.
| Starting image | Crop to fill keeps | Area lost | Pixels per inch at 35×45 mm | To reach 300 DPI |
|---|---|---|---|---|
| 12 MP phone photo (4032×3024, 4:3) | 2352×3024 (left and right cut) | 41.7% | 1,707 DPI | reduced (0.18×) |
| 24 MP camera photo (6000×4000, 3:2) | 3111×4000 (left and right cut) | 48.2% | 2,258 DPI | reduced (0.13×) |
| Full HD screenshot (1920×1080, 16:9) | 840×1080 (left and right cut) | 56.3% | 610 DPI | reduced (0.49×) |
| Vertical phone video frame (1080×1920, 9:16) | 1080×1389 (top and bottom cut) | 27.7% | 784 DPI | reduced (0.38×) |
35×45 mm in pixels at each print resolution
Pixels = millimetres ÷ 25.4 × DPI. The panel uses 300 DPI unless you change it; the file sizes are for a portrait saved as JPEG.
| Resolution | Pixels | Megapixels | JPEG q75 | JPEG q90 |
|---|---|---|---|---|
| 150 DPI | 207×266 | 0.0551 MP | ≈ 11.6 KB | ≈ 18.3 KB |
| 200 DPI | 276×354 | 0.0977 MP | ≈ 17.3 KB | ≈ 27.7 KB |
| 300 DPI | 413×531 | 0.22 MP | ≈ 31.2 KB | ≈ 51.1 KB |
| 400 DPI | 551×709 | 0.39 MP | ≈ 48.4 KB | ≈ 80.4 KB |
| 600 DPI | 827×1063 | 0.88 MP | ≈ 90.1 KB | ≈ 157 KB |
Will a 35×45 mm photo fit a KB limit?
Saved at 300 DPI (413×531 px), a head-and-shoulders portrait of 35×45 mm comes to about 24.4 KB at JPEG quality 60, 31.2 KB at 75 and 51.1 KB at 90, and about 19.5 KB as WebP at 75. Dropping to 200 DPI (276×354 px) brings quality 75 down to about 17.3 KB, but the print then holds fewer pixels per inch.
At 300 DPI the photo fits under 20 KB up to quality 42 and under 50 KB up to quality 88; under 100 KB and 200 KB it fits even at quality 95. Set the KB limit next to the size and PixelFit picks the highest quality that fits.
Printing 35×45 mm copies
Without margins or cutting gaps, 8 copies fit on one 4×6 in (102×152 mm) photo print, 36 on an A4 sheet, 36 on US Letter (some turned sideways where that packs more). Print at 100% scale, never "fit to page", or a small ID photo of 35×45 mm comes out the wrong size; 413×531 px at 300 DPI is exact.
Other 7:9 print and photo sizes
These sizes have the same 7:9 shape as 35×45 mm, so a photo cropped for one fits the others with no further crop.
| Size | Pixels | Scale from 35×45 mm |
|---|---|---|
| 420×540 px photo | 420×540 | 1.02× |
| 630×810 px photo | 630×810 | 1.53× |
Forms in the PixelFit directory that ask for 35×45 mm
Matched by the photo size stated in each form's official notice (checked October 2026); open the form's page for its KB limit, background and other rules.
- IBPS PO/MT 2025 (CRP PO/MT-XV) online application (IBPS PO)
- SBI PO and Junior Associate (Clerk) 2025 online applications (SBI)
- Rajasthan High Court Stenographer 2026 online application (Rajasthan HC Stenographer)
- Sarathi driving licence application (Parivahan) (Sarathi driving licence)
- International Experience Canada (IEC) work permit application photo (Canada IEC)
- CTET September 2026 online application (CTET)
- BARC OCES/DGFS 2026 Scientific Officer application (BARC OCES/DGFS)
- Delhi High Court Junior Judicial Assistant / Restorer examination 2026 (Delhi High Court JJA)
How to resize a picture to 35×45 mm
-
Add the picture
Drop, paste or pick the photo in the PixelFit panel at the top of this page; it is decoded in your browser and never uploaded.
-
Set the size
Pick mm as the unit, enter 35×45 mm and 300 DPI; the tool turns that into 413×531 pixels.
-
Choose how it fits
Choose crop to fill to keep the 7:9 frame without stretching (a phone photo loses 41.7%, left and right cut). Fit inside keeps the whole picture as a 413×310 file instead; Pad with colour puts that on a full 413×531 canvas.
-
Pick the format and download
Keep JPG (without a KB limit PixelFit saves at quality 85, about 41.2 KB for a head-and-shoulders portrait) so the 300 DPI stamp travels with the file, or choose PDF to get the picture as a PDF page, then download.
Sources
- GOV.UK: Get a passport photo, digital photos, HM Passport Office, checked 31 October 2026: gov.uk/photos-for-passports
- IBPS CRP PO/MT-XV: Guidelines for scanning and upload of documents, Institute of Banking Personnel Selection (IBPS), checked 31 October 2026: ibpsreg.ibps.in/crppoxvjun25/uploads/loadpdf.php?file=k7m…
- Inch (1 inch is exactly 25.4 mm), Wikipedia, checked 31 October 2026: en.wikipedia.org/wiki/Inch
- Measured by PixelFit with sharp 0.35.5 / libvips 8.18.7 on 31 October 2026, from the sample photo President Barack Obama.jpg by Pete Souza (Official White House photo) (Public domain): commons.wikimedia.org/wiki/File:President_Barack_Obama.jpg
Frequently asked questions
How do I resize a photo to 35×45 mm?
Open the photo in the PixelFit panel on this page, set 35×45 mm at 300 DPI (413 × 531 px), choose crop to fill and download. From a 12 MP phone photo that crops 41.7% (left and right cut) and still leaves 1,707 pixels per inch to work with.
How many pixels is 35×45 mm?
35×45 mm is 413×531 px at 300 DPI, 827×1063 px at 600 DPI and 207×266 px at 150 DPI (pixels = mm ÷ 25.4 × DPI).
What DPI should a 35×45 mm photo have?
PixelFit uses 300 DPI, which makes 35×45 mm exactly 413×531 px; print it at 100% scale. At 150 DPI the same 413×531 pixels would print 2.75×3.54 in, twice as large and with half the density.
How many 35×45 mm photos fit on one sheet?
Without margins, 36 fit on A4 (210×297 mm), 36 on US Letter and 8 on a 4×6 in photo print, turning them sideways where that packs more. Leave a few millimetres for cutting.
How big is a 35×45 mm JPEG at 300 DPI?
For a head-and-shoulders portrait about 31.2 KB at quality 75 (24.4 KB at 60, 51.1 KB at 90, 41.2 KB at the panel's default quality 85); a detailed outdoor photo is about 55.2 KB at quality 75, estimated from measured encodes of real sample photos at 413×531 px.
Related
Same 7:9 ratio
Nearby sizes
- 420×525 px photo 4:5
- 400×514 px photo 200:257 (about 7:9)
- 33×48 mm photo 130:189 (1:1.45)
- 40×50 mm photo 472:591 (about 4:5)
- 30×40 mm photo 3:4
- 400×600 portrait 2:3