TDEE Calculator for Weight Loss
This TDEE calculator does more than just estimate your daily calorie needs—it also analyzes your ideal weight, sets personalized fitness goals, and provides a complete meal plan and weekly workout routine to support your journey.
TDEE Calculator
Quick answer
A TDEE calculator estimates how many calories you burn in a typical day. To use that estimate for weight loss, eat about 250–500 calories below it, follow your average weight for 2–3 consistent weeks, and adjust gradually.
You can create the deficit through food, activity, or both. The result is a starting point—not an exact prescription or a guarantee of a specific weekly result.
This guide explains what TDEE means, how the estimate is calculated, how to choose a realistic calorie target, and how low-impact cardio can fit into your plan.
Key Takeaways
Start with your estimate
Calculate your TDEE to get an estimated maintenance-calorie baseline.
Use a modest deficit
A smaller, sustainable change is usually easier to maintain than the largest possible calorie cut.
Combine food and activity
Food choices often create most of the deficit, while activity adds flexibility and supports overall health.
Watch the trend
Compare weekly averages instead of reacting to a single weigh-in or a single day of tracking.
What Is TDEE?
TDEE stands for Total Daily Energy Expenditure. It is the total energy your body uses over 24 hours, including energy used at rest, digesting food, everyday movement, and planned exercise.
The share contributed by each component varies from person to person. That is one reason two people with similar body sizes can have different calorie needs.
BMR or RMR
Energy used for essential functions at rest.
Thermic effect of food
Energy used to digest, absorb, and process the food you eat.
Everyday movement
Walking, standing, chores, and other movement outside formal exercise.
Planned exercise
Energy used during workouts, which varies with duration, intensity, and activity type.
TDEE vs. BMR: BMR is only the energy you use at complete rest. TDEE adds digestion, daily movement, and exercise, so it is the number to base a calorie target on. Use the BMR calculator if you only want your resting estimate.
Why TDEE Matters for Weight Loss
Your TDEE gives you a practical baseline. Eating roughly around that estimate may maintain your weight; eating below it over time may lead to weight loss. Because equations cannot capture every difference in metabolism or movement, your real-world weight trend is the best way to check the estimate.
How to Use a TDEE Calculator
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Enter your information
Add your age, sex used by the equation, weight, height, and activity level.
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Choose a typical activity level
Use a normal week, not your most active week. If you are between two levels, starting with the lower one can reduce overestimation.
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Treat the result as a trial target
Follow the target consistently, compare 2–3 weeks of average weight, and adjust only when the trend calls for it.
TDEE Formula: How the Estimate Is Calculated
This calculator uses the Mifflin-St Jeor equation to estimate resting energy needs, then multiplies the result by an activity factor. A systematic review found it to be one of the more reliable commonly used equations for many adults, but individual errors still occur (PubMed).
Step 1: Estimate BMR with Mifflin-St Jeor
Men: BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age + 5
Women: BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age − 161
Step 2: Multiply by an Activity Factor
| Activity Level | Typical Week | Multiplier |
|---|---|---|
| Sedentary | Desk job, minimal movement | 1.2 |
| Lightly active | Light activity a few times a week | 1.375 |
| Moderately active | Exercise 3–5 days a week | 1.55 |
| Very active | Hard exercise most days or an active job | 1.725 |
| Super active | Athlete-level training or heavy physical work | 1.9 |
Example
A 45-year-old man who weighs 220 lb (99.8 kg), is 5 ft 6 in (168 cm), and is lightly active has an estimated BMR of about 1,826 calories. Multiplied by 1.375, his estimated TDEE is about 2,511 calories per day. A 250–500 calorie deficit would put his starting target at roughly 2,011–2,261 calories per day.
Other Ways to Estimate Energy Needs
| Method | Common Use | Important Limitation |
|---|---|---|
| Mifflin-St Jeor | General adult estimates | May not match an individual’s measured metabolism. |
| Katch-McArdle | People with a body-fat estimate | Results depend heavily on the body-fat input. |
| Indirect calorimetry | Clinical measurement of resting expenditure | Requires specialized equipment and does not measure every part of TDEE. |
Important
No formula can know your exact metabolism or daily movement. Use the result as a starting estimate and let your longer-term trend guide small adjustments.
Turn the estimate into a target
How to Set a Calorie Deficit
A calorie deficit means that, over time, you take in less energy than your body uses. A common starting approach is about 250–500 calories below estimated TDEE, which matches the mild and moderate deficit options in this calculator. The right target depends on your intake, body size, activity, health, and ability to maintain the plan.
Weight loss is not perfectly linear. The familiar “500 calories per day equals exactly 1 pound per week” rule is only a rough shortcut. The CDC notes that gradual, steady loss—often around 1–2 pounds per week—is more likely to be maintained than faster loss.
Read the CDC guidanceCreate Part of the Deficit with Low-Impact Cardio
You do not have to create the entire deficit by cutting food. Combining a modest intake change with added activity may feel more manageable. Aerobic exercise adds calorie expenditure and supports cardiovascular health; strength training and adequate protein are especially helpful when preserving muscle is a priority.
For people who prefer seated, low-impact exercise, a recumbent exercise bike can be a practical at-home option. Its supported seat and reclined position may feel more comfortable than upright cardio for some users, although suitability varies.
Estimated Time to Burn 200 Calories on a Stationary Bike
| Body Weight | Light–Moderate About 60 watts |
Moderate–Vigorous About 90–100 watts |
|---|---|---|
| 150 lb | About 34 min | About 28 min |
| 200 lb | About 25 min | About 21 min |
| 250 lb | About 20 min | About 17 min |
| 300 lb | About 17 min | About 14 min |
Estimates are for stationary cycling and use MET values of 5.0 at about 60 watts and 6.0 at about 90–100 watts from the 2024 Adult Compendium of Physical Activities. Actual calorie burn varies with equipment, effort, fitness, and individual physiology.
Plan a realistic ride
Estimate your recumbent-bike calorie burn
Enter your weight, ride time, and effort level to get a more personalized estimate, then use it as a consistent planning reference.
How to Apply Your Calorie Goal
Build satisfying meals
Include protein, fiber-rich foods, and portions that fit your target while leaving room for foods you enjoy.
Track consistently
Measure calorie-dense ingredients such as oils, spreads, sauces, and snacks until portions become familiar.
Treat activity calories as estimates
Watches, consoles, and calculators may over- or underestimate exercise expenditure.
Monitor weekly averages
Daily changes often reflect water, sodium, carbohydrate intake, and digestion—not only fat change.
When to adjust
If your average weight has not moved for 2–3 consistent weeks, first check portions, logging, and weekend habits. If those are consistent, make one modest change—about 100–200 calories through intake or activity—and monitor again.
Common TDEE Mistakes
| Mistake | Why It Causes Problems | What to Do Instead |
|---|---|---|
| Treating TDEE as exact | The equation cannot capture every individual difference. | Calibrate it with your 2–3 week trend. |
| Choosing too much activity | It can inflate the estimated calorie target. | Base the choice on a typical week. |
| Making a very large cut | It can increase hunger, fatigue, and difficulty following the plan. | Start modestly and adjust gradually. |
| Eating back all exercise calories | Exercise estimates can be inaccurate. | Treat them as estimates and judge by the trend. |
| Reacting to one weigh-in | Water changes can hide short-term fat loss. | Compare weekly averages. |
| Never recalculating | Energy needs usually drop as body weight drops. | Recalculate after meaningful weight change. |
Frequently Asked Questions
How accurate is a TDEE calculator?
It can provide a useful starting point for many adults, but it cannot measure exact daily calorie burn. Compare the estimate with your weight trend over 2–3 consistent weeks and adjust gradually.
How many calories should I eat to lose weight?
Start with your estimated TDEE and subtract about 250–500 calories per day. Then use your 2–3 week weight trend to confirm the target is working before making further changes.
How often should you recalculate your TDEE?
Recalculate after about 10 pounds of weight change, after a lasting change in activity or routine, or when several weeks of consistent tracking show that the estimate no longer matches your results.
Is it better to eat less or exercise more to lose weight?
Either can contribute to a calorie deficit, and combining modest food changes with activity is often practical. Food intake usually has the larger direct effect, while exercise supports fitness, health, and weight maintenance.
Does exercise increase TDEE?
Yes. Exercise adds to daily energy expenditure, although the amount varies with workout type, intensity, duration, body size, and activity during the rest of the day.
How many calories does a recumbent bike burn?
It depends on body weight, duration, power output, and physiology. A 200 lb person may take roughly 21–25 minutes to burn an estimated 200 calories at about 60–100 watts. Use our recumbent bike calories burned calculator for a personalized estimate.
What should you do if weight loss stalls?
First compare weekly averages and confirm that food and activity tracking have been consistent for 2–3 weeks. If the trend is truly flat, recalculate your TDEE at your current weight, make one small change of about 100–200 calories, and monitor again before making another adjustment.
Conclusion
Use Your TDEE as a Starting Point, Then Personalize It
A TDEE calculator turns your basic information and activity level into a useful maintenance-calorie estimate. The next step is not chasing a perfect number—it is choosing a realistic target and checking how your body responds.
Start with a modest deficit, keep tracking consistent, and use weekly averages to guide small changes. If low-impact home cardio fits your plan, a recumbent bike can make regular movement easier to schedule.
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References
- Mifflin, M. D., St Jeor, S. T., Hill, L. A., Scott, B. J., Daugherty, S. A., & Koh, Y. O. (1990). A new predictive equation for resting energy expenditure in healthy individuals. American Journal of Clinical Nutrition, 51(2), 241–247.
- Frankenfield, D., Roth-Yousey, L., & Compher, C. (2005). Comparison of predictive equations for resting metabolic rate in healthy nonobese and obese adults. Journal of the American Dietetic Association, 105(5), 775–789.
- Centers for Disease Control and Prevention. Steps for Losing Weight.
- National Institute of Diabetes and Digestive and Kidney Diseases. Body Weight Planner.
- Herrmann, S. D., et al. (2024). 2024 Adult Compendium of Physical Activities: Bicycling.
Health note: This calculator and guide provide general estimates for adults and are not medical advice. They are not intended for anyone under 18 or for people who are pregnant or breastfeeding. If you have a medical condition, take medication that affects weight or appetite, have a history of disordered eating, or need a large weight change, consult a qualified health professional. Stop exercising and seek professional guidance if you experience chest pain, unusual shortness of breath, dizziness, or worsening symptoms.