Recommendable cable cross-section calculator for a photovoltaic installation?

Hello, how would you recommend an online calculator for calculating the AC and DC cable cross-section for a photovoltaic installation? Now I don't want to count from the formula every time. I used to have an English-language site, but I can't find it again.

I have one, don't know if that's what you're after.
https://sklep-merita.pl/led-lighting-lists/kalkulator-cross-section-electric-wire/

@Marius_W https://lumier.pl/kalkulator/
http://pro-sun.pl/KAB/index.html

I use this calculator, only you need to convert the diameter of the cable to the area in mm², there is a table at the bottom of the page
https://www.rapidtables.com/calc/wire/voltage-drop-calculator.html

This is what I ment! Thanks all!

You can use online cable cross-section calculators made for solar installations, for example on sites like Solar-Tools or Photovoltaik-Rechner. Just enter the power of your PV system, voltage, cable length and current – it will suggest the right cable size. Always remember to check local safety standards and, if possible, confirm with an electrician to be sure your installation is safe and efficient.

prose wrote:

@Marius_W https://lumier.pl/kalkulator/
http://pro-sun.pl/KAB/index.html

Not that I'm picking on you, but these calculators can be read at bedtime instead of a story . They are as suitable for PV as I am for ballet. Note that you can choose any cross-sectional value from the range there, even 90 or 125mm2 . I have not seen PV cables like this.... For matching AC cables they might still be suitable....
Solar cables generally available in wholesalers we have two: 4mm2 or 6mm2. It is possible to purchase 10mm2 on request, but for small installations this makes no sense. There may be thicker ones manufactured, but I don't know about that. So the question is: why does anyone need a DC calculator? I use 6mm2 in every installation because the price difference is a joke. What is there to "calculate"?
To the Author: what kind of power installations are you building so that there is a problem with cable selection? I am asking seriously, just out of curiosity....