1:1 Aspect Ratio Calculator + Bulk Resizer
Work out any square dimension, then crop or resize a whole folder of images to match — free, in your browser.
Work out any square dimension, then crop or resize a whole folder of images to match — free, in your browser.
A 1:1 aspect ratio is simply a square — width and height are identical. It is the safest shape on the internet, because a square crops predictably into almost every other layout. Profile pictures, product thumbnails, album art, and app icons are nearly all square, which is why it is usually the first ratio an e-commerce catalog gets standardised to.
| Resolution | Name | Category | Megapixels | Resize to this size |
|---|---|---|---|---|
| 1080x1080 | Instagram Square Post | Social | 1.2 MP | Resize to this — 1080 by 1080 pixels, Instagram Square Post |
| 1200x1200 | Product Photo (standard) | Screen | 1.4 MP | Resize to this — 1200 by 1200 pixels, Product Photo (standard) |
| 2000x2000 | Product Photo (zoomable) | Screen | 4.0 MP | Resize to this — 2000 by 2000 pixels, Product Photo (zoomable) |
| 3000x3000 | Album Art (master) | 9.0 MP | Resize to this — 3000 by 3000 pixels, Album Art (master) | |
| 500x500 | Profile Picture | Social | 0.3 MP | Resize to this — 500 by 500 pixels, Profile Picture |
| 1024x1024 | App Icon (source) | Screen | 1.0 MP | Resize to this — 1024 by 1024 pixels, App Icon (source) |
| 800x800 | Catalog Thumbnail | Screen | 0.6 MP | Resize to this — 800 by 800 pixels, Catalog Thumbnail |
| 2400x2400 | 8x8 Print @ 300dpi | 5.8 MP | Resize to this — 2400 by 2400 pixels, 8x8 Print @ 300dpi |
Square shots line up in a grid without ragged edges, which is why most marketplaces require them
Every platform crops avatars to a circle inscribed in a square — start square and nothing gets cut
Spotify, Apple Music, and every podcast directory expect square artwork
Square masters get downsampled into every icon size a platform asks for
It depends entirely on where it lands. 1080x1080 covers social posts. Product photos want 2000x2000 or larger if you need zoom-on-hover. Album art masters are 3000x3000. The ratio stays the same — only the pixel count changes, so pick the largest target you will need and resize down from there.
It is the default for good reason. Amazon, Shopify, and Etsy all render product grids as squares, and a mixed-ratio catalog looks broken no matter how good the individual photos are. Standardising an entire catalog to square is one of the highest-impact batch jobs you can run.
You are cutting from the long side, so the question is which side. Center-cropping is the safe default and works for most product shots. For portraits it usually fails, because faces are rarely centered — crop those individually or use a top-weighted crop so heads survive.
Yes, 1:1 still posts fine. It just takes up less feed height than 4:5, so it tends to get scrolled past faster. Square is still the right call when the same asset has to work as a product thumbnail and a post.
Any width-equals-height pair is 1:1 — 2:2, 500x500, and 4000x4000 are all the same ratio. Ratios describe shape, not size, so they simplify down to their smallest form, which is why you always see it written as 1:1.