TDEE Calculator
Find Your Estimated Daily Calorie Needs
Your Total Daily Energy Expenditure, or TDEE , is an estimate of how many calories your body uses across a typical day.
Unlike BMR, which focuses on energy used at rest, TDEE accounts for your overall activity level. That makes it a useful estimate of the calories you may need to maintain your current body weight.
Enter your age, sex, height, weight, and usual activity level in the TDEE Calculator above to get your estimated daily maintenance calories.
Where Your TDEE Number Comes From
NutritionSolver calculates your TDEE in two steps.
First, it estimates your resting energy needs using the Mifflin-St Jeor equation . This gives an estimate of the energy your body uses before normal daily activity is considered.
Your estimated resting needs are then adjusted using the activity level you select.
In simple terms:
TDEE = estimated resting energy needs × activity factor
This produces an estimate that reflects both your body size and how active you are during a typical week.
Choose an Activity Level That Matches Real Life
Activity level can make a noticeable difference to your TDEE result, so choose the option that best represents your normal routine rather than your most active day.
Someone who works at a desk but exercises several times per week may still have lower daily energy expenditure than someone with an active job who spends much of the day walking or lifting.
Your workouts matter, but so does everything you do outside the gym.
Walking, standing, commuting, household tasks, physical work, and other everyday movement can all contribute to your total energy expenditure.
If you are between two activity levels, the calculator should be treated as a starting estimate rather than an exact measurement.
What Does Your TDEE Result Tell You?
If your result is 2,300 calories per day , the calculator estimates that your body uses roughly 2,300 calories during an average day at the activity level you selected.
That number is commonly called your maintenance calorie estimate .
It does not mean your body will burn exactly 2,300 calories every day. Energy expenditure naturally changes with activity, body weight, training, and normal differences between days.
The most useful way to think about TDEE is as a practical baseline for understanding your overall energy needs.
If your main goal is to calculate a specific calorie reduction after finding your maintenance estimate, use the Calorie Deficit Calculator rather than trying to turn the TDEE result itself into a weight-loss prescription.
Why Your Actual TDEE May Be Different
Every TDEE calculator relies on prediction equations and activity estimates.
Your real energy expenditure can differ because of factors such as:
- body composition
- changes in daily movement
- exercise volume
- occupation
- differences in resting energy expenditure
Activity level is especially difficult to estimate perfectly. Two people with similar height, weight, and workout schedules can still move very different amounts during the rest of the day.
For that reason, your calculated TDEE should be viewed as an estimate, not an exact calorie measurement .
When Should You Calculate TDEE Again?
Your energy needs are not permanently fixed.
It can make sense to recalculate your TDEE after a meaningful change in body weight, activity level, training routine, or daily lifestyle.
There is usually no need to recalculate because of small day-to-day changes. TDEE is more useful for understanding your general energy needs over time.
TDEE Questions, Answered
Is TDEE the same as maintenance calories?
TDEE is commonly used as an estimate of maintenance calories because it represents the amount of energy you are expected to use across a typical day.
What is the difference between BMR and TDEE?
BMR estimates energy needs at rest. TDEE builds on resting energy expenditure by accounting for your overall activity level, so the TDEE result is normally higher.
Does TDEE include exercise?
Yes. Your selected activity level is intended to account for your overall level of physical activity, including exercise and everyday movement.
Is a TDEE calculator exact?
No. TDEE calculators provide estimates based on equations and activity assumptions. Actual daily energy expenditure can be measured more directly with specialized methods, but even real-world energy use varies from day to day.
About the TDEE Estimate
The NutritionSolver TDEE Calculator combines an estimate from the Mifflin-St Jeor equation with your selected activity level to estimate total daily energy expenditure.
Use the result as a practical reference for your daily energy needs rather than an exact number your body must match every day.