Maintenance Calorie
CALCULATOR v2
Find Your Maintenance Calories
Uses the Mifflin-St Jeor equation — the most validated formula for general adults
Your Details
USA / METRICHigher activity level = more calories needed to maintain weight
Energy Breakdown
height, weight
Suggested Macro Split
Balanced example shown
Calories by Activity Level
All values use same BMR — only PAL multiplier changes
Mifflin-St Jeor Formula
PAL Quick Reference
Your personalized results will appear here
Fill in the form above and click Calculate
Uses Mifflin-St Jeor equation (most validated for general adults). Results are estimates — consult a healthcare professional for personalized advice.
Dawn Jackson Blatner
Registered Dietitian & Nutritionist
Registered Dietitian Nutritionist and Diabetes Specialist building muscle-preserving nutrition tools. Creator of the Protein Calculator — following ISSN Guidelines for evidence-based dietary planning. USA 2026 Edition.
Compact light theme · Desktop & Mobile friendly
Maintenance Calorie Calculator: Maintain Your Weight
If you’ve ever tried to lose weight only to gain it back, you’re not alone. Millions of Americans successfully lose weight but struggle to keep it off. The secret isn’t just eating less — it’s understanding exactly how many calories your body needs to maintain your current weight.
That’s where a Maintenance Calorie Calculator comes in. A maintenance calorie calculator estimates the number of calories you should eat every day to stay at your current weight without gaining or losing. It’s one of the most powerful tools for long-term weight management, whether you’ve recently lost weight, want to stop yo-yo dieting, or simply want to maintain a healthy lifestyle.
In this comprehensive guide, you’ll learn:
- What a maintenance calorie calculator is
- How it works (including the most accurate formula)
- Step-by-step instructions on how to use one
- Real-life examples using US measurements
- Pro tips to actually maintain your weight
By the end, you’ll know exactly how to calculate and use your maintenance calories for lasting results.
Want to calculate yours right now? Use our free, accurate Maintenance Calorie Calculator below (built with the recommended Mifflin-St Jeor equation).
What Is a Maintenance Calorie Calculator?
A Maintenance Calorie Calculator is a tool that estimates your Total Daily Energy Expenditure (TDEE) — the total number of calories your body burns in a day. This includes everything from basic bodily functions (breathing, thinking, digesting) to daily activities and exercise.
When you consistently eat at your maintenance calorie level, your weight stays stable.
Why is this different from a regular calorie calculator? Most calorie calculators focus on weight loss. A true maintenance calorie calculator focuses on weight stability — which is often harder than losing weight for many people.
According to research, fewer than 20% of people who lose weight successfully keep it off for a year. Knowing your maintenance calories gives you a clear target to work with instead of guessing.
Why Knowing Your Maintenance Calories Matters
The average American adult needs between 1,600 and 3,000 calories per day to maintain weight, depending on age, sex, and activity level (Dietary Guidelines for Americans). However, individual needs vary dramatically.
Here’s why calculating your personal maintenance calories is so valuable:
- Prevents weight regain after dieting
- Helps you eat intuitively without strict tracking forever
- Supports muscle maintenance while staying lean
- Reduces frustration from “I’m eating healthy but not losing/gaining”
- Works with popular apps like MyFitnessPal, Lose It!, or Cronometer
Whether you have a desk job in New York, work on your feet in Texas, or train for marathons in California, your maintenance calories are unique to you.
How Does a Maintenance Calorie Calculator Work?
Most accurate maintenance calorie calculators use a two-step process:
- Calculate your Basal Metabolic Rate (BMR) This is the number of calories your body needs at complete rest to maintain basic functions.
- Multiply BMR by your Physical Activity Level (PAL) This accounts for everything you do during the day (walking, working, exercising).
Result = Your Maintenance Calories (TDEE)
The most recommended and accurate formula used by health professionals and modern calculators is the Mifflin-St Jeor equation.
The Mifflin-St Jeor Formula (Most Accurate Method)
The Mifflin-St Jeor equation is widely considered the most accurate BMR formula for the general population.
For Men:
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BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) + 5For Women:
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BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) − 161Then:
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Maintenance Calories = BMR × Physical Activity Level (PAL)Physical Activity Level (PAL) Chart
| Activity Level | PAL | Description | Example (US Lifestyle) |
|---|---|---|---|
| Sedentary | 1.2 | Little or no exercise | Desk job, minimal walking |
| Lightly Active | 1.4 | Light exercise 1–2 days/week | Walking + light gym 1-2x |
| Moderately Active | 1.6 | Moderate exercise 3–5 days/week | Gym 3-4x + active job |
| Active | 1.75 | Hard exercise 6–7 days/week | Daily workouts or physical job |
| Very Active | 2.0 | Very hard exercise + physical job | Construction + gym |
| Extra Active | 2.4 | Professional athlete or extreme training | Competitive athletes |
How to Use a Maintenance Calorie Calculator
Here’s exactly how to calculate your maintenance calories:
Step 1: Gather Your Information
- Age
- Biological sex
- Current weight (in pounds)
- Height (in inches or feet/inches)
- Activity level (be honest!)
Step 2: Convert to Metric (if needed) Most scientific formulas use kilograms and centimeters:
- Weight in kg = Weight in lbs ÷ 2.20462
- Height in cm = Height in inches × 2.54
Step 3: Calculate Your BMR Use the Mifflin-St Jeor formula above.
Step 4: Choose Your Activity Level Be realistic. Many people overestimate how active they are.
Step 5: Multiply BMR × PAL This gives you your estimated maintenance calories.
Step 6: Adjust Based on Results Start with this number for 2–3 weeks and track your weight. Adjust by 100–200 calories if needed.
Real-Life Example
Meet Sarah — a 34-year-old woman from Austin, Texas.
- Weight: 148 lbs
- Height: 5’5″ (65 inches)
- Age: 34
- Activity: Works from home + walks 3x per week and does light strength training (Lightly Active = 1.4)
Step 1: Convert to metric
- Weight: 148 ÷ 2.20462 ≈ 67.1 kg
- Height: 65 × 2.54 = 165.1 cm
Step 2: Calculate BMR (Female)
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BMR = (10 × 67.1) + (6.25 × 165.1) − (5 × 34) − 161
BMR = 671 + 1,031.875 − 170 − 161
BMR ≈ 1,372 caloriesStep 3: Calculate Maintenance Calories
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Maintenance Calories = 1,372 × 1.4 = **1,921 calories per day**Result: Sarah needs approximately 1,920–1,950 calories daily to maintain her current weight.
If she wants to lose weight slowly, she could eat around 1,700–1,750 calories. To gain muscle, she might eat 2,100+.
Maintenance Calories vs BMR vs TDEE
| Term | What It Means | Includes Exercise? | Best Used For |
|---|---|---|---|
| BMR | Calories burned at complete rest | No | Medical & scientific use |
| TDEE / Maintenance | Total calories burned including daily activity | Yes | Weight maintenance |
| Calorie Deficit | Eating below maintenance to lose weight | Yes | Fat loss |
| Calorie Surplus | Eating above maintenance to gain weight/muscle | Yes | Muscle building |
Pro Tips for Maintaining Your Weight Successfully
- Track for 2–4 weeks — Use an app to log food and weight.
- Weigh yourself consistently — Same time, same conditions.
- Adjust every 4–6 weeks — Your maintenance calories change as your weight and activity change.
- Prioritize protein — Helps preserve muscle and keeps you full.
- Don’t slash calories too low — This slows your metabolism over time.
- Include strength training — Helps maintain muscle mass and metabolic rate.
- Be flexible — Maintenance calories are a range, not a strict number.
Common Mistakes to Avoid
- Overestimating activity level
- Using outdated formulas (like old Harris-Benedict)
- Ignoring that maintenance calories decrease after weight loss
- Being too rigid with daily numbers
- Forgetting that stress, sleep, and hormones affect calorie needs
FAQ/ Frequently Asked Questions
1. What is the most accurate maintenance calorie calculator? The Mifflin-St Jeor equation is currently considered one of the most accurate for estimating BMR and maintenance calories in healthy adults.
2. How often should I recalculate my maintenance calories? Every time your weight changes by 5+ pounds or your activity level changes significantly.
3. Can I use this if I’ve recently lost weight? Yes, but be aware your maintenance calories may be slightly lower than someone who was always at that weight. Increase activity to help maintain results.
4. Should I eat exactly at my maintenance calories every day? Not necessarily. Aim for an average over the week. Some days higher, some lower is fine.
5. What if I want to lose fat but keep muscle? Eat in a moderate deficit (300–500 calories below maintenance) and prioritize protein + strength training.
6. Is 2,000 calories the right amount for everyone? No. 2,000 is just a general reference on nutrition labels. Your actual needs depend on your stats and activity.
7. How accurate are these calculators? They’re estimates. The best way to know your true maintenance is to track your weight and intake consistently for several weeks.
8. Can I use this calculator if I’m over 50? Yes. The Mifflin-St Jeor equation works well across adult age groups.
9. What’s the difference between maintenance calories and TDEE? They’re the same thing. TDEE stands for Total Daily Energy Expenditure.
10. Should I use pounds or kilograms in the calculator? Use whichever you prefer — good calculators convert automatically.
Understanding your maintenance calories is one of the highest-ROI things you can do for long-term health and weight management. It removes the guesswork and gives you a clear, personalized number to work with.
Whether your goal is to stop gaining weight, maintain after a successful diet, or simply eat in a way that supports your energy and lifestyle, knowing your maintenance calories puts you in control. Use our free, accurate Maintenance Calorie Calculator now and get your personalized results in seconds.
You can explore Similar Calculator like this Weight Loss Percentage Calculator.