Quickly and easily calculate aspect ratios with Sizey. Use this awesome little menu bar app with your favorite design tool and start effortlessly generating perfect aspect ratios.

Enter the width or height of a design element, and select your aspect ratio of choice. BOOM. Done. A perfectly calculated aspect ratio.

Add your own custom aspect ratios in the settings menu for extra ratio awesomeness!

Finally, a tool that helps you create without a bunch of math getting in the way.

Find us on Instagram, Facebook, & Twitter @SizeyApp or send us a good ol’ fashioned email at We would love to hear from you!

What’s New

Version 1.2.1

We squashed some bugs a little too hard and created a monster. All fixed now :)

Ratings and Reviews

Trill Livin ,

The developers care about this app

In an old review, I criticized the fact that you couldn't use ratios with decimal places (e.g., 1:2.39). However, in the latest update, they added that feature along with about a dozen others. This is now a nicely simple yet fully-featured app that does exactly what it says. Worth the purchase!

Developer Response ,

Oh no!! We hear you loud and clear—we've updated Sizey to include decimal ratios so you can calculate ratios to your hearts desire! Simply update to the latest version, and you should be good to go! :)

If you have any more ideas on how we can improve Sizey, please reach out to us at—we would love to hear from you!

bastionbird ,

I hate math

And guessing if a ratio is correct. This took care of both of those ✨

Been using it with figma for ages and the speed of the autocopy is perfect.

kris10_s ,


- Super easy to use
- Fantastic design
- Use it every day
- Would absolutely buy again

This app is one of my best investments since I've begun photography and design. Seriously has prevented me from throwing my computer across the room from math headaches. So happy to never have to calculate an aspect ratio again. Thank you, Sizey!


AnySec LLC
7.1 MB

macOS 10.13 or later, 64-bit processor



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.