Daily calorie guidelines are starting points and will need to be adjusted based upon a variety of factors. A few of these being:
Men often need more calories than women, due to muscle mass.
Often taller individuals need more calories than those who are shorter.
Age plays a factor- metabolism slows as we get older therefore older men and women don’t need to consume as much as those who are younger.
Body fat percentage will also affect how much you will be consuming as lean individuals tend to be able to eat more than someone who has accumulated an excess amount of adipose tissue.
Activity level and activity type will play a role- if your job involves heavy lifting or lots of movement, or standing during the day, it means your calories will be different than someone who sits at a desk from 8-5.
And of course your unique metabolic efficiency will impact your daily caloric intake. If you have a fast metabolism you’ll be consuming more calories than someone with a slower metabolism.
Use a recommended daily caloric intake as starting point but be prepared to adjust.
Keep in mind no two individuals are the same and general guidelines are just that- “general”, and “guidelines”.
Remember to base your calorie intake on healthy fats, good carbohydrates and proteins.