Example Data Table
| Profile |
Formula |
Activity |
BMR |
TDEE |
Goal |
| Female, 30, 65 kg, 165 cm |
Revised |
Lightly active |
1,430 kcal |
1,966 kcal |
Maintain |
| Male, 38, 82 kg, 178 cm |
Revised |
Moderately active |
1,825 kcal |
2,829 kcal |
Maintain |
| Female, 45, 78 kg, 170 cm |
Original |
Sedentary |
1,502 kcal |
1,802 kcal |
Loss |
Formula Used
Revised male BMR: 88.362 + 13.397 × weight kg + 4.799 × height cm - 5.677 × age.
Revised female BMR: 447.593 + 9.247 × weight kg + 3.098 × height cm - 4.330 × age.
Original male BMR: 66.4730 + 13.7516 × weight kg + 5.0033 × height cm - 6.7550 × age.
Original female BMR: 655.0955 + 9.5634 × weight kg + 1.8496 × height cm - 4.6756 × age.
TDEE: BMR × activity multiplier. Goal calories are TDEE plus the chosen daily adjustment. Macro calories use 4 calories per gram for protein, 9 for fat, and 4 for carbohydrate.
How To Use This Calculator
Choose a unit system first. Enter age, height, and weight. Select the formula version and sex value used by the equation. Pick the activity level that best matches a normal week. Choose a goal, macro preset, and meal count. Press the submit button to view results below the header and above the form.
Understanding Harris Benedict TDEE
Harris Benedict TDEE helps estimate the calories your body may burn each day. It starts with basal metabolic rate. BMR is the energy used at rest. The result is then multiplied by an activity factor. This gives total daily energy expenditure. The estimate is useful for weight control, meal planning, and performance goals.
Why This Calculator Helps
Manual calorie math can be slow. This calculator handles unit conversion, formula selection, activity level, goal adjustment, and macro planning. You can compare maintenance calories with a cutting or gaining target. You can also see protein, fat, and carbohydrate targets. These outputs make the result easier to use in a daily food plan.
Choosing Inputs Carefully
Good inputs improve the estimate. Enter your current age, height, and weight. Select the sex value used by the equation. Pick the activity level that matches an average week, not one unusual day. Sedentary means little planned exercise. Very active means hard training or physical work most days. Athlete level should be used only when daily training volume is high.
Using The Result
Treat TDEE as a starting point. Real energy needs vary between people. Sleep, stress, training, digestion, and daily movement can change the final number. Track body weight for two to four weeks. If weight stays stable, your intake is close to maintenance. If weight changes too quickly, adjust calories gradually. Small changes are easier to follow.
Goal And Macro Planning
For fat loss, the calculator subtracts calories from maintenance. For weight gain, it adds calories. The weekly rate option uses a calorie value for body mass change. This is an estimate, not a promise. Protein is based on body weight. Fat uses a percent of target calories. Carbs fill the remaining calories. This method keeps macro totals aligned with the selected goal.
Practical Notes
Do not use a TDEE estimate as medical advice. People with medical conditions, pregnancy, eating disorders, or special diets should speak with a qualified professional. Most healthy adults can use the result as a planning guide. Review progress often. Adjust slowly. Consistency matters more than perfect precision. Use exports to save each estimate and compare changes after training, dieting, or schedule shifts across different weeks later.
FAQs
What does TDEE mean?
TDEE means total daily energy expenditure. It estimates the calories your body burns in a full day, including rest, movement, work, and exercise.
What does BMR mean?
BMR means basal metabolic rate. It estimates the calories needed for basic body functions while resting, before activity is added.
Which Harris Benedict formula should I choose?
The revised formula is often preferred for modern estimates. The original option is included for comparison, legacy content, and educational use.
How accurate is this calculator?
It provides an estimate, not an exact measurement. Track weight, measurements, and performance for several weeks, then adjust calories as needed.
What activity level should I select?
Choose the level that matches your usual week. Do not select a higher level because of one hard workout or a temporary busy day.
Can I use this for fat loss?
Yes. Select the fat loss goal and choose a weekly change amount. Use a moderate deficit and review progress regularly.
Can I use custom macro settings?
Yes. Select the custom macro preset. Then enter protein grams per kilogram and fat percent. Carbohydrates fill the remaining calories.
Should I follow the result exactly?
No. Use it as a starting target. Your real needs may change with sleep, stress, training, food tracking accuracy, and daily movement.