sizes in Sketch

Sketch doesn't do anything weird with the sizes, so it's likely just a misunderstanding or miscommunication going on.

Make sure your Sketch artboards are targeted to what your developing. Also make sure you zoom out to the proper scale when designing. A lot of times something will look good zoomed in, and then when you finally see it exported it's way too big (or too small) in the context. Also, keep in mind that when you're designing for Retina (like in the iOS artboards), you're going to need to halve your font size in the actual code.

If it's an iOS app, then use the iPhone and/or iPad artboards. Sketch 3 has those ones set for Retina, so the artboard for iPhone is 640 pixels wide—but the development environment (Xcode) wants to see all iPhone stuff as 320px wide, and wants you to provide images 1x and 2x. The image at 1x (for older iDevices) is name whatever the image name is. For the Retina image, make sure to include the "@2x". For example, 1x is "my-image.png" and 2x is "my-image@2x.png".

If it's for web, just use the responsive web design template. (You can find it under the File menu.)

I hope that helps!

Does it tell you what units it's using? (px, pt, in, etc.)

Hello, The unit written is pixels

Hello, The unit written is pixels

Hmm. I'm not really sure then because I don't use Sketch. If you look at the properties of your image after you export, what is the size compared to what it was in Sketch? Is it the same, or double, or some other size?

Thank you very much Mike ! Such a complete answer !

I am having so much trouble with this. I am using the template in Sketch which includes art boards for the following:

1. 180 - iPhone 6 Plus
2. 152 - iPad
3. 120 - iPhone
4. 80 - Spotlight
5. 76 - iPad (@1x)
6. 58 - Settings
7. 180 - iPhone 6 Plus

There has got to be a better/easier way to do this, but here's what I've done: I created 1 app icon and created a Symbol out of it. I then clicked the art board for each icon size and resized the app icon. Each time I resize the symbol it changes the symbol across all art boards. I'm assuming my problem is that im resizing it in pixels instead of points, however Sketch does not have an option to change the points value (at least nothing I'm aware of)

Pasan Premaratne explained this really well but im stuck on the export part, not importing into sketch. Any help is extremely appreciated. I can't believe that im this far into the course and this is what im stuck on.

Thank you.