Updated · how we check
Resize a photo to 3×5 in (900×1500 pixels)
A 3×5 in print at 300 DPI is 900×1500 pixels. Set 3×5 in and 300 DPI in the panel and choose crop to fill: a 4:3 phone photo loses 55% and still gives 605 pixels per inch. As a JPEG, a detailed outdoor photo comes to about 455 KB at the panel's default quality 85 and 346 KB at quality 75.
3×5 in at 300 DPI (900×1500 px)
JPG · no file-size limit · 3x5 in 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. 3x5 in at 300 DPI is 900x1500 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.
3×5 in at a glance
| Physical size | 3×5 in = 76.2×127 mm |
|---|---|
| Pixels at 300 DPI | 900×1500 px (1,350,000 pixels, 1.35 MP) |
| Shape | 3:5, portrait (width ÷ height = 0.6) |
| From a 12 MP phone photo | 605 pixels per inch after the crop to fill (55% cut) |
| Copies per sheet | 1 on 4×6 in · 4 on A4 · 4 on US Letter |
| At 600 DPI | 1800×3000 px (5.4 MP) |
| Resampling passes from a phone photo | 1814×3024 crop → 907×1512 → 900×1500 |
| Estimated JPEG (outdoor photo, quality 75, 300 DPI) | 346 KB |
| JPEG without a KB limit (panel default, quality 85) | 455 KB |
How 3×5 in turns into pixels
An inch is exactly 25.4 mm, so at 300 DPI the pixel size is 3 in × 300 = 900 px wide and 5 in × 300 = 1500 px tall. 3×5 in is a portrait shape with sides in the ratio 3:5 (0.6 as a decimal), 76.2×127 mm in the other unit.
The same 3×5 in needs 600×1000 px at 200 DPI and 1800×3000 px (5.4 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 3×5 in.
Is your photo sharp enough for 3×5 in?
After the crop to fill, this is how many source pixels land on each inch of 3×5 in. 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 3×5 in | To reach 300 DPI |
|---|---|---|---|---|
| 12 MP phone photo (4032×3024, 4:3) | 1814×3024 (left and right cut) | 55% | 605 DPI | reduced (0.5×) |
| 24 MP camera photo (6000×4000, 3:2) | 2400×4000 (left and right cut) | 60% | 800 DPI | reduced (0.38×) |
| Full HD screenshot (1920×1080, 16:9) | 648×1080 (left and right cut) | 66.3% | 216 DPI | enlarged (1.39×) |
| Vertical phone video frame (1080×1920, 9:16) | 1080×1800 (top and bottom cut) | 6.3% | 360 DPI | reduced (0.83×) |
3×5 in in pixels at each print resolution
Pixels = inches × DPI. The panel uses 300 DPI unless you change it; the file sizes are for a detailed outdoor photo saved as JPEG.
| Resolution | Pixels | Megapixels | JPEG q75 | JPEG q90 |
|---|---|---|---|---|
| 150 DPI | 450×750 | 0.34 MP | ≈ 85.4 KB | ≈ 139 KB |
| 200 DPI | 600×1000 | 0.6 MP | ≈ 151 KB | ≈ 245 KB |
| 300 DPI | 900×1500 | 1.35 MP | ≈ 346 KB | ≈ 553 KB |
| 400 DPI | 1200×2000 | 2.4 MP | ≈ 602 KB | ≈ 963 KB |
| 600 DPI | 1800×3000 | 5.4 MP | ≈ 1.23 MB | ≈ 1.99 MB |
How large is a 3×5 in file?
Saved at 300 DPI (900×1500 px), a detailed outdoor photo of 3×5 in comes to about 260 KB at JPEG quality 60, 346 KB at 75 and 553 KB at 90, and about 304 KB as WebP at 75. Dropping to 200 DPI (600×1000 px) brings quality 75 down to about 151 KB, but the print then holds fewer pixels per inch.
At 300 DPI the photo fits under 200 KB up to quality 40 and under 500 KB up to quality 86; under 1 MB and 2 MB it fits even at quality 95. Set the KB limit next to the size and PixelFit picks the highest quality that fits.
Printing 3×5 in copies
Without margins or cutting gaps, 1 copy fits on one 4×6 in (102×152 mm) photo print, 4 on an A4 sheet, 4 on US Letter (some turned sideways where that packs more). Print at 100% scale, never "fit to page", or a print of 3×5 in comes out the wrong size; 900×1500 px at 300 DPI is exact.
Sizes close to 3×5 in
No other target in the PixelFit list has exactly 3:5. The nearest sizes (by pixel count and shape) and their crop from a 900×1500 image:
- 1000×1500 portrait: 2:3, 10% cropped (top and bottom cut), then 1.111× scale.
- 720×1280 vertical HD: 9:16, 6.2% cropped (left and right cut), then 0.853× scale.
- 800×1200 portrait: 2:3, 10% cropped (top and bottom cut), then 0.889× scale.
- 1080×1920 vertical Full HD: 9:16, 6.2% cropped (left and right cut), then 1.28× scale.
How to resize a picture to 3×5 in
-
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.
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Set the size
Pick inch as the unit, enter 3×5 in and 300 DPI; the tool turns that into 900×1500 pixels.
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Choose how it fits
Choose crop to fill to keep the 3:5 frame without stretching (a phone photo loses 55%, left and right cut). Fit inside keeps the whole picture as a 900×675 file instead; Pad with colour puts that on a full 900×1500 canvas.
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Pick the format and download
Keep JPG (without a KB limit PixelFit saves at quality 85, about 455 KB for a detailed outdoor photo) so the 300 DPI stamp travels with the file, or choose PDF to get the picture as a PDF page, then download.
Sources
- 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 Hartz Lake at Hartz Mountain.jpg by JustinH (Wikimedia Commons user) (CC0 1.0): commons.wikimedia.org/wiki/File:Hartz_Lake_at_Hartz_Mount…
Frequently asked questions
How do I resize a photo to 3×5 in?
Open the photo in the PixelFit panel on this page, set 3×5 in at 300 DPI (900 × 1500 px), choose crop to fill and download. From a 12 MP phone photo that crops 55% (left and right cut) and still leaves 605 pixels per inch to work with.
How many pixels is 3×5 in?
3×5 in is 900×1500 px at 300 DPI, 1800×3000 px at 600 DPI and 450×750 px at 150 DPI (pixels = inches × DPI).
What DPI should a 3×5 in photo have?
PixelFit uses 300 DPI, which makes 3×5 in exactly 900×1500 px; print it at 100% scale. At 150 DPI the same 900×1500 pixels would print 6×10 in, twice as large and with half the density.
How many 3×5 in photos fit on one sheet?
Without margins, 4 fit on A4 (210×297 mm), 4 on US Letter and 1 on a 4×6 in photo print, turning them sideways where that packs more. Leave a few millimetres for cutting.
How big is a 3×5 in JPEG at 300 DPI?
For a detailed outdoor photo about 346 KB at quality 75 (260 KB at 60, 553 KB at 90, 455 KB at the panel's default quality 85); a head-and-shoulders portrait is about 127 KB at quality 75, estimated from measured encodes of real sample photos at 900×1500 px.
Related
Nearby sizes
- 1000×1500 portrait 2:3
- 720×1280 vertical HD 9:16
- 800×1200 portrait 2:3
- 1080×1920 vertical Full HD 9:16
- 1080×1440 portrait 3:4
- 1080×1350 portrait 4:5