Maintenance Diet Calculator

Estimate steady calories and macros for your body today. Compare activity, goals, meals, and nutrients. Build balanced habits for daily maintenance with clear targets.

Maintenance Diet Result

Calculator Inputs

Kilograms
Centimeters
Used by Katch-McArdle.
Use calories per day.
Grams per kilogram.
Percentage of daily calories.
Milliliters per kilogram.

Example Data Table

Sex Age Weight Height Activity Formula Maintenance Calories Protein / Fat / Carbs
Male 30 82 kg 178 cm Moderate Mifflin-St Jeor 2,776 kcal 164g / 77g / 357g
Female 28 62 kg 165 cm Light Mifflin-St Jeor 1,861 kcal 124g / 52g / 225g
Male 45 91 kg 182 cm Active Katch-McArdle 3,044 kcal 182g / 85g / 388g

Formula Used

Mifflin-St Jeor: Male BMR = 10W + 6.25H - 5A + 5. Female BMR = 10W + 6.25H - 5A - 161.

Revised Harris-Benedict: Male BMR = 88.362 + 13.397W + 4.799H - 5.677A. Female BMR = 447.593 + 9.247W + 3.098H - 4.330A.

Katch-McArdle: BMR = 370 + 21.6 × lean body mass in kilograms.

Total Daily Energy Expenditure: TDEE = BMR × activity multiplier + extra weekly exercise calories ÷ 7.

Macros: Protein uses grams per kilogram. Fat uses calorie percentage. Carbs receive remaining calories after protein and fat.

How To Use This Calculator

  1. Select metric or imperial units.
  2. Enter age, sex, weight, and height.
  3. Choose the BMR formula that fits your data.
  4. Add body fat percentage for Katch-McArdle estimates.
  5. Select activity level and weekly exercise calories.
  6. Set protein, fat, water, and meal preferences.
  7. Press the calculate button.
  8. Download the result as CSV or PDF.

Maintenance Diet Planning Guide

What Maintenance Means

A maintenance diet keeps body weight mostly stable. It matches energy intake with energy use. The goal is not fast loss. It is not rapid gain. It supports training, work, sleep, and normal daily movement.

Why Calories Matter

Your body spends energy at rest. This is basal metabolic rate. It also spends energy through walking, exercise, digestion, and daily tasks. The calculator combines these parts into total daily energy expenditure. That number becomes your starting maintenance target.

Choosing A Formula

Mifflin-St Jeor is a practical default for many adults. Revised Harris-Benedict gives another common estimate. Katch-McArdle can help when body fat data is known. Each formula is still an estimate. Real tracking improves accuracy over time.

Macro Balance

Protein supports muscle repair and fullness. Fat supports hormones and meal satisfaction. Carbohydrates fuel training and active days. A good maintenance plan balances all three. It should also include fiber, water, fruits, vegetables, and enough minerals.

Using The Result

Start with the displayed calorie target. Follow it for two weeks. Weigh yourself several times per week. Use the average, not one single day. If weight rises slowly, reduce calories slightly. If weight falls, add a small amount back.

Daily Meal Structure

The meal split shows average calories and macros per meal. It is only a guide. You can eat fewer meals or more meals. The best pattern is the one you can repeat. Keep portions simple. Keep protein present in most meals.

Advanced Adjustments

Training days may need more carbohydrates. Rest days may need fewer calories. Some people prefer a weekly calorie budget. Others prefer the same intake every day. Both can work. Consistency matters more than perfect timing.

Health Reminder

This tool is for planning only. Medical conditions, pregnancy, eating disorders, and medication use need personal care. Ask a qualified professional before making major diet changes.

Frequently Asked Questions

What is a maintenance diet?

It is an eating plan that supports stable body weight. Calories match your average daily energy use.

Which formula should I choose?

Mifflin-St Jeor is a good default. Use Katch-McArdle when you know a reliable body fat percentage.

Why does activity level change the result?

Activity level estimates calories burned through movement. More activity usually means higher maintenance calories.

Are the macro targets fixed rules?

No. They are planning targets. Adjust them based on hunger, training, food preference, and health needs.

How often should I update my target?

Review it every two to four weeks. Update sooner after major weight, activity, or training changes.

Can I use this for muscle gain?

Yes, but choose a small surplus outside strict maintenance. Keep protein high and train consistently.

Can I use this for fat loss?

Yes. Use maintenance first, then reduce calories gently. Avoid extreme deficits without professional guidance.

Why do daily scale numbers change?

Water, sodium, digestion, and training can shift weight. Weekly averages show progress more clearly.

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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.