Exporting as PNG, dimensions larger than artboard!?

[d.dlv2288]

Hey guys,
I created some icons and I put each icons in their 500x500px artboard.

I go to export them, tick "use artboards". Thinking all of the file sizes will be 500x500, it's not!? They are all 2084x2084

What am I doing wrong?

Edit: Fixed, was exporting @ 300ppi, if I export 72ppi, saves it at artboard size 

[Ton Frederiks]

Use the Resolution > Screen option this will saves as 72ppi and keep the amount of pixels.

You used High (300ppi) which will add new pixels.