Resize Image to 420×645

420×645 is a tall portrait, about 2:3 in shape. It is a handy preview size for book covers, flyers and posters, and for portrait cards in mobile lists. Everything runs in your browser — nothing is uploaded. Need a smaller file instead? Compress or convert.

or drop images here — or press Ctrl + V to paste

JPG · PNG · WebP · GIF · BMP — no size limit, no sign-up

Width (px)

Height (px)

Unit

DPI

Keep aspect ratio (set one, the other follows)

Scale 50%

Aspect ratio

Width in pixels (optional)

Fit whole image inside instead of cropping to fill (result may be smaller than the preset)

Output format

Output quality 90

Position & zoom

Zoom 100%

Drag the preview to choose which part of the image is kept. The same framing is used for every image in the batch.

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resized

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new size

Added 0 files

Why choose 420×645?

420×645 gives a portrait canvas with a 1:1.54 ratio and 0.27 MP of detail. People most often need it for portrait photos, posters and mobile screens.

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1:1.54 portrait shape

Every 420×645 image has a 1:1.54 ratio, so anything you design for it keeps the same proportions on every screen.

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Where it is used

420×645 suits portrait photos, posters and mobile screens. Using the exact size avoids a website scaling or cropping your image on its own.

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Prints 1.4×2.15 in at 300 DPI

That is 3.6×5.5 cm at photo quality, or 2.8×4.3 in at 150 DPI for posters viewed from a distance.

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About 42 KB–85 KB as JPG

Expect around 42 KB–85 KB for a JPG photo at this size. Simple graphics are smaller, PNG photos several times larger.

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Sharp results

A 12 MP phone photo has 45× more pixels than 420×645, so resizing down keeps it sharp.

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Framing control

Filling 420×645 from a 3:4 phone photo trims about 13% of it. Drag the preview to choose what stays, or tick “Keep aspect ratio” to keep it all.

420×645 at a glance

Pixels	420×645 (270,900 pixels)
Aspect ratio	1:1.54
Megapixels	0.27 MP
Orientation	Portrait
Print size at 300 DPI	1.4×2.15 in (3.6×5.5 cm)
Print size at 150 DPI	2.8×4.3 in
Typical JPG file	42 KB–85 KB
Typical WebP file	30 KB–59 KB
Common uses	Portrait photos, posters and mobile screens
Similar sizes	400×600, 390×567, 480×672, 480×640

Resize an image to 420×645 in 3 steps

Add your photo (or several) — drag them onto the box above.
The size is already set to 420×645. Drag the preview to frame it, or tick “Keep aspect ratio” to avoid cropping.
Click Resize and download, or save everything as one ZIP.

New to image resizing? Read the full resizing guide.

Square sizes

Same width and height — profile photos, icons, product shots:

8 × 8 10 × 10 16 × 16 28 × 28 32 × 32 40 × 40 50 × 50 64 × 64 96 × 96 98 × 98 100 × 100 112 × 112 120 × 120 128 × 128 144 × 144 150 × 150 180 × 180 184 × 184 192 × 192 200 × 200 240 × 240 250 × 250 256 × 256 300 × 300 320 × 320 350 × 350 360 × 360 400 × 400 450 × 450 480 × 480 500 × 500 512 × 512 600 × 600 640 × 640 700 × 700 800 × 800 840 × 840 900 × 900 1000 × 1000 1024 × 1024 1080 × 1080 1100 × 1100 1200 × 1200 1300 × 1300 1400 × 1400 1500 × 1500 1600 × 1600 1920 × 1920 2000 × 2000 2048 × 2048 2400 × 2400 2500 × 2500 3000 × 3000 4000 × 4000 5000 × 5000 6000 × 6000

Landscape sizes

Wider than tall — screens, banners, covers and thumbnails:

64 × 32 140 × 110 150 × 100 200 × 150 300 × 80 300 × 250 320 × 240 400 × 150 480 × 360 512 × 128 512 × 256 555 × 425 600 × 240 600 × 400 (3:2) 640 × 360 640 × 480 (4:3) 680 × 240 800 × 600 (4:3) 851 × 315 900 × 600 1000 × 500 1024 × 576 (16:9) 1080 × 566 1128 × 191 1200 × 628 1200 × 630 1200 × 675 (16:9) 1200 × 800 1200 × 900 1280 × 700 1280 × 720 (HD) 1366 × 768 1500 × 500 1500 × 1000 (3:2) 1600 × 900 1920 × 1080 (Full HD) 1920 × 1200 (16:10) 2048 × 1152 (2K) 2560 × 1440 (1440p) 2660 × 1140 (banner) 3000 × 1500 3440 × 1440 3840 × 2160 4080 × 3060

Portrait sizes

Taller than wide — passport photos, forms and phone screens:

Change the aspect ratio

Fit an image to a ratio without choosing pixels:

Any aspect ratio 16:9 4:3 3:2 1:1 4:5 5:4 3:4 2:3 9:16 21:9 5:2

Paper, print & photo sizes

Paper and photo sizes in mm, cm and inches, plus DPI tools:

A5 A4 A3 Letter Legal 4R (4 × 6 in) Postcard Stamp size Signature 2.5 × 2.5 cm 3 × 4 cm 3.3 × 4.8 cm 3.5 × 2.5 cm 3.5 × 3.5 cm 3.5 × 4.5 cm 3.5 × 5 cm 3.81 × 3.81 cm 4 × 3 cm 4 × 4 cm 4 × 5 cm 4 × 6 cm 4.5 × 3.5 cm 5 × 5 cm 5 × 7 cm 5.08 × 5.08 cm 25 × 25 mm 30 × 40 mm 32 × 26 mm 33 × 48 mm 35 × 35 mm 35 × 45 mm 35 × 50 mm 35 × 54 mm 36 × 36 mm 38.1 × 38.1 mm 40 × 50 mm 45 × 35 mm 45 × 38 mm 47 × 36 mm 50 × 50 mm 50 × 70 mm 50.8 × 50.8 mm 51 × 51 mm 52 × 40 mm 1.18 × 1.57 in 1.30 × 1.89 in 1.38 × 1.38 in 1.38 × 1.77 in 1.5 × 1.5 in 1.97 × 2.76 in 2 × 2 in 3 × 3 in 4 × 6 in 5 × 7 in 6 × 4 in 8 × 10 in 8.5 × 11 in Resize in pixels Resize in cm Resize in mm Resize in inches Resize by percentage 72 DPI converter 100 DPI converter 150 DPI converter 200 DPI converter 300 DPI converter 600 DPI converter

Resize for a platform

Ready-made sizes for social profiles and posts:

Resize tools

Batch resizing, DPI and crop tools:

Bulk image resizer Resize for printing Image DPI converter Image DPI checker Circle crop Square crop

Previews of tall designs

Book covers and posters. Most book covers and posters are close to 2:3. A 420-pixel-wide preview shows the title clearly in a store listing or a blog post without loading the full print file.

Check the text. Title lettering that looks bold on a full-size cover can become thin at 420 pixels. If it is hard to read here, it will be hard to read in a thumbnail grid too.

Mobile cards. On a 2× phone screen, 420 pixels fills a 210-point column — a typical two-column product or story grid.

Related tall sizes: 400×600, 600×900, 500×1000.

Sizes similar to 420×645

Close in shape and size — each one opens the tool already set to it:

390 × 567 480 × 672 480 × 640 413 × 531 354 × 472 350 × 467 600 × 800 350 × 450

Frequently asked questions

What ratio is 420×645?

About 1:1.54 — very close to 2:3 (which would be 420×630), so 2:3 designs fit with only a thin trim.

What aspect ratio is 420×645?

420×645 has a 1:1.54 aspect ratio. Images with a different shape have to be cropped or padded to fit it.

How big will a 420×645 image print?

At 300 DPI (photo quality) 420×645 prints at 1.4×2.15 inches (3.6×5.5 cm). At 150 DPI it covers 2.8×4.3 inches, fine for posters seen from further away.

How large is a 420×645 file?

A photo at 420×645 is usually 42 KB–85 KB as a JPG, and about 30 KB–59 KB as WebP. If you need it smaller, run it through the compressor afterwards.

Will my photo lose quality at 420×645?

No — a normal phone photo is much larger, so it is scaled down and stays sharp.

Can I resize to 420×645 without cropping?

Yes. Tick “Keep aspect ratio”: the whole picture is kept, but one side may come out shorter than 420×645. Without it, the image fills 420×645 exactly and the edges that do not fit the 1:1.54 shape are trimmed.

Are my images uploaded?

No. Resizing happens entirely in your browser. Nothing is transmitted or stored, and you can disconnect from the internet after the page loads and it still works.