Almost every nutrition conversation we have with a new client in Dubai starts at the same place: how much should I actually be eating? The honest answer is that nobody truly knows until we watch the body respond for two or three weeks — but the right starting number is not a guess. It comes from a simple equation, lightly adjusted for the climate and lifestyle we live inside here.
The calculator below is the same one we run for new clients in the first session. Enter your numbers, choose a goal, and you will get a maintenance estimate, a target calorie figure, a macro split and a Dubai-adjusted water target. Then read the notes underneath — the number is only half the story.
Project Reshape
Dubai TDEE & Macro Calculator
Mifflin–St Jeor formula with a Dubai-climate hydration target. For guidance only — your real numbers will refine with a coach.
What the calculator is actually doing
The engine is the Mifflin–St Jeor formula — the most accurate of the widely used BMR equations for the general adult population. It estimates the calories your body would burn at complete rest, then multiplies that by an activity factor to give your TDEE (Total Daily Energy Expenditure). That TDEE is the calorie figure at which your weight would stay roughly the same, week to week.
From there we subtract 500 kcal for fat loss or add 300 kcal for muscle gain — both are intentionally conservative. Aggressive deficits and surpluses look exciting on a spreadsheet and almost always backfire in the gym. Slow loss preserves muscle. Slow gain stays lean.
The Dubai adjustments — what changes here
Hydration
The water figure is not the generic two-litre advice. We use roughly 40ml per kilogram of bodyweight plus a 750ml heat allowance. An 80kg adult training in Dubai is realistically looking at four litres a day from May through September, more if they sweat heavily. Under-hydration is the single most common reason a client's energy collapses in the afternoon — long before any calorie problem shows up.
Protein
The macro split is a sensible default, but for most Dubai clients we override protein upward to roughly 1.8–2.2g per kg of bodyweight. Heat, fasted mornings, late dinners and irregular sleep all push the muscle protein synthesis window around — a higher daily protein floor protects against it. If the calculator gives you less than 1.6g per kg, eat to 1.6g per kg anyway.
Carbohydrate timing
The total carb number matters far less than where you place it. In Dubai we cluster the majority of carbohydrate intake either around the training session or at the evening meal, leaving mornings lighter. Fasted heat plus a heavy breakfast is the fastest route to the 11am energy collapse.
Ramadan
During Ramadan the same TDEE figure still applies — your body's energy needs do not disappear because you ate the calories at midnight instead of midday. We have a separate protocol for the fasting month written out in full here.
How accurate is this number, honestly?
Within roughly ±10%. The equation is a population average; your real metabolism is influenced by lean mass, NEAT (the calories you burn fidgeting, walking, climbing stairs), thyroid output, sleep quality, stress and medication. A client who scores 2,600 in the calculator might genuinely maintain at 2,400 or 2,800 — and the only way to know is to eat at the estimate for two weeks and watch the scale, the mirror and the gym performance.
That is exactly what we do with new clients. The calculator gives us a credible starting point. The first three weeks of food logs tell us where the truth actually sits.
Three common mistakes once people have a number
- Treating it as a daily ceiling rather than a weekly average. Two dinners out and a brunch will blow any daily target. We aim for the weekly total — a 400-kcal Saturday surplus is fine if Sunday is 400 below.
- Cutting calories the moment progress slows. The first response to a stall is almost never fewer calories. It is more sleep, more walking, more protein, more honest logging. Cutting first leaves you with no levers later.
- Eating at the deficit number on training days too. If you train hard three or four times a week, eating at maintenance on those days and at the deficit on rest days will outperform a flat daily deficit almost every time — especially in Dubai heat.
What to do with this number
Three things. First, eat at the target calorie figure for a full two weeks before changing anything — most people change too early and learn nothing. Second, hit the protein number every single day; the carb and fat split can move around it. Third, weigh yourself daily, average the seven days, and only compare week-to-week — daily numbers in a Dubai climate swing by 1.5kg on water alone.
The calculator gives you a starting line, not a finish line. The real work is the next twelve weeks of patient, honest adjustment.
When the calculator stops being enough
For anyone genuinely trying to reshape their body — visible fat loss, visible muscle, a change you want to keep — the calculator is a useful first step and a poor long-term plan. Real work needs adjustments every two to three weeks, a coach who can read the photos and the gym log together, and a programme built around the calories rather than the other way around. That is the bulk of what we do at Project Reshape, and the starting point is a single unhurried conversation.
