How can I modify my kitchen cabinet door hinges to open 50 degrees ?

Normally there is a screw you can adjust. Can you post a picture of the hinge?

I found a couple answers for you

https://www.youtube.com/watch?v=5vm8iGNSebY

https://www.youtube.com/watch?v=77h8TBThOrE

How to Adjust Cabinet Doors

https://www.thespruce.com/how-to-adjust-cabinet-hinges-1822181

You should be able to adjust the "stop" with a screw driver. Trial and error to get it exactly where you want it to land.

Here you go:

https://homeguides.sfgate.com/keep-cabinet-doors-swinging-open-far-54818.html

Hi Melissa, you could put a chain, strap, or restraint on each to stop them before they open further than you want

https://www.youtube.com/watch?v=E-ZuwRp5bgQ

Here is a quick remedy: https://www.youtube.com/watch?v=5vm8iGNSebY

Hi Meliossa: You can get Hinge Restriction clips. Here's a video showing how to install them:

https://www.youtube.com/watch?v=tKcTU3_E150

Here's a couple sites that may help:

https://www.charlestoncrafted.com/how-to-keep-a-cabinet-door-from-opening-too-far-the-easiest-way/

https://homeguides.sfgate.com/stop-cabinet-door-opening-90-degrees-87982.html

Good luck