How it adapts
How ZMacros adapts to you.
Every calorie calculator starts with a formula. Formulas are averages, and you aren't one. ZMacros replaces the guess with what your own logs and weigh-ins show, and it's careful about when to trust them.
Step 1
A starting point
On day one there's no data yet, so ZMacros starts from a well-established formula using your height, weight, age, activity and goal. It's a sensible first guess, the kind any tracker gives you, and nothing more.
- 175 cm
- 82 kg
- 30 years
- Male
- Lightly active
- Goal: lose weight
2,192 kcal a day
A formula's first guess, and nothing more. The numbers in these examples are made up to show the idea.
Step 2
It learns from you
As you log food and weigh in, ZMacros compares what you ate with what your weight actually did over the past few weeks. From that it works out what you burn, not what an average person of your size burns.
It allows for real life. Days you only partly logged count for less, days you didn't log aren't guessed at, and entries that can't be right are set aside rather than trusted.
Tap a day to see how it counts.
- Fully logged: counts in full
- Partly logged: counts for less
- Not logged: left out, not guessed
Step 3
It tells you how sure it is
You see a range and a plain confidence level, not just a number. Early on it watches and learns without touching your target. As the evidence builds, it's allowed to make bigger adjustments. It never swings your target on a few days of data.
1,980 to 2,420 kcal Settled
Enough evidence for larger adjustments when you recalculate.
Step 4
Your target stays honest
When you recalculate, ZMacros applies what it has learned and moves your target toward what's actually working for you. It never goes below the minimums used in clinical weight-loss guidelines (1,200 kcal for women, 1,500 for men), and protein stays tied to your bodyweight.
If your progress stalls for a while, it tells you so, and Progress shows when you're likely to reach your goal weight based on your real trend.
Your target: 1,900 kcal
Your target moves toward what your data suggests, a step at a time.
What it isn't
The estimate reads your logs. It doesn't measure your body. It's only as good as your logging and weighing, and it isn't medical advice. The more consistently you log and weigh, the sharper it gets.
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