Free tool · No signup
Free Aspect Ratio Calculator for Creators
Avoid weird crops. Enter width and height to see the simplified ratio, orientation, closest common preset, and matching dimensions for a target side. Handy for Reels and YouTube thumbs made in India.
Get matching height.
Get matching width.
Aspect ratio
9:16
0.563 decimal · portrait · closest preset: 9:16 story / Reel
At width 1080px → height 1920px
Why this tool
Get the ratio before you crop
Designers and creators waste time when a 1080 canvas is the wrong ratio for Stories versus feed. Knowing 9:16 versus 4:5 before you export saves rework.
Enter any pixel size. Optionally set a target width or height to get the matching other side. Closest preset labels help you brief a designer fast.
Export clean covers for products you sell on ownstreet so mobile buyers in India see a sharp preview before they pay with UPI.
Pair this with the social image resizer when you need an actual PNG export at the preset size, not just the math.
How it works
- 1
Enter width and height in pixels
- 2
See simplified ratio and orientation
- 3
Optional: set a target width or height
- 4
Copy the matching dimension into your editor
When to use this tool
- 01
Planning Reel versus feed crops
- 02
Briefing a designer on thumb size
- 03
Checking a weird export from a camera
- 04
Matching a product cover to a preset
FAQ
Frequently asked questions
What does closest preset mean?
The nearest common social ratio from a small built-in list, not a guarantee of platform policy.
Can I use centimeters?
This tool expects pixels. Convert print sizes elsewhere first.
Is this free?
Yes. No signup.
Does it resize my image?
No. Use the social image resizer to export a PNG at a preset size.
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