Calorie Intake Calculator to Maintain Weight

Calculate maintenance calories using height, weight, age, and activity. Compare ranges and macro plans easily. Stay consistent with realistic targets for stable weight control.

Advanced Maintenance Calculator

Enter your details. The result will appear above this form after submission.

Used by standard BMR equations.
Use kilograms for metric or pounds for imperial.
Optional. Needed for Katch-McArdle.
Use 0 if activity level already covers training.
Optional. Leave 0 for a conservative estimate.

Example Data Table

Profile Formula Activity Estimated Maintenance
Male, 30, 80 kg, 180 cm Mifflin-St Jeor Moderate About 2,780 kcal/day
Female, 28, 62 kg, 165 cm Mifflin-St Jeor Light About 1,890 kcal/day
Male, 42, 190 lb, 5 ft 10 in Revised Harris-Benedict Very active About 3,250 kcal/day
Female, 35, 70 kg, 27% body fat Katch-McArdle Moderate About 2,210 kcal/day

Formula Used

Mifflin-St Jeor: Men use 10W + 6.25H - 5A + 5. Women use 10W + 6.25H - 5A - 161.

Revised Harris-Benedict: Men use 88.362 + 13.397W + 4.799H - 5.677A. Women use 447.593 + 9.247W + 3.098H - 4.330A.

Katch-McArdle: BMR equals 370 + 21.6 times lean mass in kilograms. This option needs body fat percentage.

Total estimate: Maintenance calories equal BMR times activity factor, plus average daily workout calories, then plus the optional thermic adjustment.

W means body weight in kilograms. H means height in centimeters. A means age in years.

How to Use This Calculator

  1. Select the unit system that matches your measurements.
  2. Enter sex, age, weight, and height carefully.
  3. Choose a BMR formula. Use body fat for Katch-McArdle.
  4. Select the activity level that best describes your week.
  5. Add measured workout calories only when they are not already counted.
  6. Adjust protein, fat, meals, and range settings.
  7. Submit the form and review calories, macros, BMI, and range.
  8. Download CSV or PDF results for tracking.

Maintenance Calorie Guide

Understanding Maintenance Calories

Maintenance calories are the daily energy your body needs to keep weight stable. They cover breathing, digestion, movement, training, and recovery. A good estimate starts with body size and age. Then it adjusts for activity. This calculator uses proven equations to estimate resting needs. It then builds a practical daily target.

Why Activity Matters

Two people can share the same weight and height. Their maintenance needs can still differ a lot. A desk worker may need fewer calories than a builder. A runner may need more than both. Activity multipliers help bridge that gap. Added exercise calories can refine the estimate when workouts are measured. The final number should be tested with real scale trends.

Using Macros for Better Control

Calories decide weight direction. Macros shape hunger, training, and meal quality. Protein supports muscle repair. Fat supports hormones and helps meals feel satisfying. Carbohydrates fuel training and daily movement. The calculator turns your calorie target into grams for each macro. You can change protein and fat settings to match your diet style.

Tracking Results

Maintenance is not a single perfect number. It is usually a small range. Water, salt, sleep, and stress can hide fat changes for several days. Weigh yourself at the same time most mornings. Compare weekly averages, not single readings. If your average rises for two weeks, lower calories slightly. If it drops, raise them slightly. Small adjustments work better than dramatic changes.

Practical Eating Tips

Build meals around lean protein, vegetables, whole grains, fruit, and healthy fats. Keep portions steady during the first two weeks. Drink enough water. Limit liquid calories if they make tracking harder. Plan snacks before hunger becomes intense. Use the meal target as a guide, not a strict rule. Restaurant meals can still fit when the weekly average stays close.

When to Recalculate

Recalculate after meaningful weight change, new training volume, or a major schedule shift. A ten pound change can alter needs. So can moving from sitting work to active work. Review your numbers every month. Use the estimate as a starting point. Your real maintenance comes from consistent tracking. Patience makes the feedback much easier to trust.

FAQs

What are maintenance calories?

Maintenance calories are the calories you need to keep body weight stable. They include resting metabolism, daily movement, digestion, and exercise.

Which formula should I choose?

Mifflin-St Jeor is a strong default. Harris-Benedict is another common option. Katch-McArdle can help when you know body fat percentage.

Should I add workout calories?

Add them only when your activity level does not already include them. Double counting exercise can make the final target too high.

Why does the result show a range?

Real maintenance changes with water, stress, sleep, steps, and training. A range is more realistic than one fixed number.

How long should I test the result?

Test the calorie target for about two weeks. Track morning body weight and compare weekly averages before changing calories.

Can I use this during fat loss?

Yes. First find maintenance. Then create a controlled deficit. Many people reduce intake by 10 to 20 percent.

Do macros affect maintenance?

Calories drive weight maintenance most directly. Macros affect hunger, performance, recovery, and meal quality, so they still matter.

Is this calculator medical advice?

No. It provides an educational estimate. People with medical conditions, pregnancy, or eating disorder history should consult a qualified professional.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.