Hello!
I am a new figma user, just wanted to know if there’s a way for me to adjust resolutions in terms of pixels per inch (PPI)?
What’s your use case?
Don’t you usually know the resolution you are designing for? 
Personally I never had to care about PPI.
Theres a scale plugin where you can proportionally scale things percentage based, and in export settings you can also change pixel density to 0,5x, 0,75x, 1x, 1,5x, 2x, 3x, 4x etc if that helps.
I’m an android developer, and in android we use DP unit, which is calculated using ppi(is it same as the dpi here?).
The problem is that when our designers designs UIs, they use pixel unit, and as a developer, I need dp, since Figma doesn’t give us dp, it would be great to at least know( if not to manipulate) the ppi, so that I could convert px to dp.
Hi there, By default, assets exported as images from Figma have a DPI of 72. To calculate the DPI of an image exported at scale, multiple 72 by the chosen scale. For example, images exported at 2x have a DPI of 144. Images exported at 3x have a DPI of 216.
This is from the following help article: https://help.figma.com/hc/en-us/articles/13402894554519-Export-formats-and-settings
Hopefully this helps with converting to dp