Aspect ratio resizer and calculator

It would be great to:

  • Input either width / height and complete the other w/ an aspect ratio value
  • Have options of standard aspect ratios in vertical / horizontal orientations
  • Resize an existing shape to conform to a standard / custom aspect ratio

Currently using 3rd party tools for aspect ratio calculations, or just manually doing it myself. Especially when engaged in projects w/ high volume media content with 4:3, 16:9, 3:2, etc. vertical / horizontal orientations, I need to get flexibility on scales rather than having fixed dimensions.