Resize Image to 840×840

840×840 is a square you meet on portfolio sites, creative marketplaces and template shops, where the grid was designed around a 1680-pixel container split into two columns. 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

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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 840×840?

840×840 is a square image of 705,600 pixels (0.71 megapixels) in a square (1:1), mostly used for social posts and product photos.

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1:1 square shape

Every 840×840 image has a square (1:1) ratio, so anything you design for it keeps the same proportions on every screen.

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Where it is used

840×840 suits social posts and product photos. Using the exact size avoids a website scaling or cropping your image on its own.

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Prints 2.8×2.8 in at 300 DPI

That is 7.1×7.1 cm at photo quality, or 5.6×5.6 in at 150 DPI for posters viewed from a distance.

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About 110 KB–220 KB as JPG

A typical photo at 840×840 saves to roughly 110 KB–220 KB at good JPG quality; WebP is usually 25–35% smaller.

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Sharp results

A 12 MP phone photo has 17× more pixels than 840×840, so resizing down keeps it sharp.

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Framing control

Filling 840×840 from a 4:3 phone photo trims about 25% of it. Drag the preview to choose what stays, or tick “Keep aspect ratio” to keep it all.

840×840 at a glance

Pixels	840×840 (705,600 pixels)
Aspect ratio	square (1:1)
Megapixels	0.71 MP
Orientation	Square
Print size at 300 DPI	2.8×2.8 in (7.1×7.1 cm)
Print size at 150 DPI	5.6×5.6 in
Typical JPG file	110 KB–220 KB
Typical WebP file	77 KB–150 KB
Common uses	Social posts and product photos
Similar sizes	800×800, 900×900, 1000×1000, 700×700

Resize an image to 840×840 in 3 steps

Add your photo (or several) — drag them onto the box above.
The size is already set to 840×840. 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

Where an 840-pixel square comes from

Like most non-round layout numbers, 840 comes from arithmetic rather than taste. It is half of 1680 and a third of 2520, both common container widths, so an 840-pixel square tiles cleanly into two- and three-column grids at desktop width. Portfolio platforms and theme marketplaces converged on it for that reason.

840 is also unusually divisible — by 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15 and more. That makes it easy to derive thumbnail variants from the same master without fractional pixels, which is why some asset pipelines use it as a source size.

In practice, treat it like any mid-size square. Roughly 0.7 megapixels, a JPG typically between 120KB and 300KB, sharp on a phone at full width and on a laptop in a two-column grid. Choose PNG instead if the image is a mockup, a UI screenshot or anything with lettering — JPG artefacts around text are obvious at this scale.

A non-square source loses its long edge; crop deliberately with the cropper first. For the nearest common alternatives, see 800×800 and 1024×1024.

Frequently asked questions

Is 840×840 different from 800×800 in any meaningful way?

Only in how it fits a grid. The extra 40 pixels make no visible quality difference, but 840 divides evenly into common container widths like 1680 and 2520, so layouts built on those numbers ask for it specifically. Use whichever the platform names.

What aspect ratio is 840×840?

840×840 has a square (1:1) aspect ratio. Any size with the same ratio — for example 800×800, 900×900 — can be scaled to it without cropping.

How big will a 840×840 image print?

At 300 DPI (photo quality) 840×840 prints at 2.8×2.8 inches (7.1×7.1 cm). At 150 DPI it covers 5.6×5.6 inches, fine for posters seen from further away.

How large is a 840×840 file?

A photo at 840×840 is usually 110 KB–220 KB as a JPG, and about 77 KB–150 KB as WebP. If you need it smaller, run it through the compressor afterwards.

Will my photo lose quality at 840×840?

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

Can I resize to 840×840 without cropping?

Yes. Tick “Keep aspect ratio”: the whole picture is kept, but one side may come out shorter than 840×840. Without it, the image fills 840×840 exactly and the edges that do not fit the 1:1 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.