Calculate your daily caloric needs based on your activity level and goals.
Treat the number as a starting point, not a prescription. Two people with identical stats can have metabolisms that differ by several hundred calories a day, so the figure above is an educated estimate, not a fixed truth.
The right way to use it: pick a target, hold it for two to three weeks, and watch the trend. Weigh yourself most mornings at the same time, ideally first thing after a bowel movement, and average the week. Day-to-day weight changes by a pound or two on water alone, so single readings mislead you and can be demoralizing.
If the two to three week trend isn't heading where you want, adjust by 100–200 calories in either direction and hold again. As you lose fat or build muscle, your BMR shifts too, which is why recalculating every 4–8 weeks (rather than setting and forgetting) tends to give much better long-term results.
Almost always, stalled fat loss comes down to the same thing: intake is higher than you think. Calorie math is stubborn. If the numbers were genuinely right, the scale would move. So before dropping the target, tighten the tracking.
The usual culprits are the calories that don't feel like meals: cooking oils (a single splash can be 100+ calories), sauces and dressings, milky coffees, alcohol, finishing the kids' leftovers, the handful of nuts while making dinner. Weighing and logging everything, including drinks and cooking fats, for a single week is usually enough to reveal the gap.
If you're confident the intake is accurate and the trend still hasn't moved after 2–3 weeks, drop the target by another 100–150 calories. Don't go more aggressive than that in one jump; the goal is a sustainable deficit.
Every situation has its own nuance, and a calculator can only take you so far. If you're unsure how to apply this to your own goals, or you've been stuck and want a second set of eyes, get in touch. I read every message personally and am happy to point you in the right direction.