Energy & TDEE
2,640
Maintenance calories
Personalized estimate
Personalized from your weight changes and food logs.
Your estimated maintenance energy breakdown on an average day.
1,690 cals
120 cals
350 cals
480 cals
TDEE is the amount of energy you use across a day. A standard calculator estimates it from profile information and an activity category. Zolt can start there, but it does not have to stay there.
Adaptive TDEE uses the relationship between your logged nutrition and changes in your weight to maintain an estimate that reflects your own history.
Common questions
- Why did my TDEE go up?
- Why did my TDEE go down?
- Why is my TDEE not updating?
- Why is Zolt different from a standard calculator?
What Zolt looks at
Zolt needs two broad kinds of information:
- nutrition data that shows what you logged over time;
- weight data that shows the direction of your weight trend.
One meal or weigh-in cannot answer much. Food logging contains estimation error, and scale weight moves for reasons that have nothing to do with body tissue. Zolt waits for a useful pattern instead of treating each day as a separate verdict. The app shows whether the estimate is updating and what kind of data may be missing.
Why it differs from a calculator
A calculator has to infer your activity from the information you enter. It cannot see what happened after you followed its recommendation.
Zolt can compare its working estimate with your continuing nutrition and weight history. If the relationship changes and the recent data is reliable enough, the estimate can change too. This makes the number useful during a cut, bulk, maintenance phase, or a period when your routine changes.
| Standard calculator | Zolt adaptive TDEE |
|---|---|
| Uses profile information and an activity choice | Learns from your nutrition and weight history |
| Produces a starting estimate | Maintains an estimate over time |
| Cannot see your outcome | Can respond when the observed pattern changes |
| Requires you to rerun it | Updates within the plan when the data supports an update |
What the status means
The TDEE area in Zolt tells you whether the estimate is still developing, updating, or being held.
A holding state does not necessarily mean anything is broken. It means Zolt is not using the recent record to publish a new estimate. Missing logs, too few weigh-ins, incomplete days, or a disrupted data connection are common reasons.
Use Why your TDEE is not updating to diagnose a holding state.
How to make the estimate useful
You do not need laboratory-perfect tracking. You need a record that is consistent enough to compare over time.
- Log most days, including weekends.
- Weigh in regularly under reasonably similar conditions.
- Correct large meal or portion mistakes when you notice them.
- Mark a genuinely incomplete day instead of leaving it as though nothing was eaten.
- Give short-term weight changes time to settle before changing the plan.
What makes a TDEE estimate reliable explains why consistency matters more than trying to make one day flawless.
What the number can tell you
The estimate is practical. It helps Zolt set a calorie target for your chosen direction and keep that target connected to your current data.
It is not a laboratory measurement of every part of your metabolism. It reflects the relationship between the data you provide and the weight trend Zolt can observe. Use it to run your plan, not to diagnose a medical condition or judge one isolated day.
What happens next
Zolt combines your current TDEE estimate with the goal and preferences you chose. That produces the calorie and protein targets shown in the app. How Zolt sets your calorie and protein targets explains the choices that shape them.
Build the record Zolt needs
Log food and weigh in consistently. The TDEE status in Zolt will tell you when the recent data supports an update.