How do I find out how much FPS my computer can manage in Minecraft without buying Minecraft?

Is there maybe some program or something for that? I can't buy Minecraft for 20 euro if I'm not sure I can play it.

Play a demo or just search the internet. So your hardware minecraft fps

What are your specs? Otherwise there's the website "Can my pc run"

Please give us / me your PC data (technical data) because every current i3 with Intel uhd graphics Minecraft can handle it.

http://www.systemrequirementslab.com

You can check every game here. So it would work for you.

You could have a look at the demo version. There you have 90 minutes to test Minecraft. Otherwise there are various websites that can help you with your question. One of them is "Can You run it". Well, actually every common PC should be able to do Minecraft by now. If not, you can play around with the settings. Make it out, turn down visibility, etc.