You kind of can’t. Caloric intake from food varies by person, as does energy use. You can use a calculator for a ballpark measure and then see how it works out for your weight.

Type of food can also matter, because depending on your stomach bacteria, you will also get different energy value from different foods. I thought an easy way for me to lose weight would be to stop eating sweets (since i prob averaged around 500kcal nominal value per day), but nope I ended up gaining weight, probably from eating slightly more normal food. What I found works for me was delaying each meal for longer so I end up eating one large and one smaller meal per day. Going to bed slightly hungry then I usually wake up not hungry and it takes a few hours before I feel the need to eat something, etc.

I even once lost weight drinking about 2 liters of choccy milk per day but eating a lot less regular food, though I wouldn’t recommend that because that much sugar is terrible for you anyway. Far worse than being a bit overweight, probably.