There's another factor this have to mention and that's the coin you gonna mine.
Different coins had different algorithms so different results.
For example of you are mining Ethereum and decided to switch to XRP, you will notice a change in Hashrate. ( Assuming you didn't change your equipments )
I don't what coin you will mine but I will give you a guideline
Method 1 : you can do that manually but I don't think that's a good way
And for additional information here's the formula
Method 2 : you can use an online calculator, just google "coin" mining calculator like ( Bitcoin mining calculator )
Enter your info, and see the the results
All these calculators are basically the same but he's one for simplicity
https://www.nicehash.com/profitability-calculator
Note: there's other factors that determine your Hashrate like the state of your equipment, if you joined a pool or not
Here's an article with all other factors
https://pureweb3.blogspot.com/2022/03/what-determines-hashrate-of-gpu.html