Maintenance Calories Explained: How to Find and Use Yours

Your maintenance calories are the number of calories you can eat each day without gaining or losing weight. There are two ways to find yours: estimate it instantly from your stats (a 180 lb moderately active man lands around 2,800 calories), or measure it precisely with a simple 2-week tracking test using your own food log and bathroom scale. Every weight-loss or muscle-gain plan starts from this number — a deficit is maintenance minus a few hundred calories, a surplus is maintenance plus a few hundred — so it pays to get it right. This guide covers both methods, step by step.

What Are Maintenance Calories?

Maintenance calories are the intake level at which energy in equals energy out. Your body burns a certain total each day — your TDEE (total daily energy expenditure) — and when you eat exactly that amount, your weight holds steady. Maintenance calories and TDEE are two names for the same number; "maintenance" is just the more practical framing, because it describes what the number does.

That makes maintenance the most useful number in all of nutrition planning:

• To lose fat: eat 300–500 calories below maintenance.
• To hold your weight: eat at maintenance.
• To build muscle: eat 200–300 calories above maintenance, with resistance training.

If you are new to these terms, our explainer on BMR vs TDEE covers how your maintenance number is built from your resting burn plus your activity.

Method 1: Estimate Your Maintenance Calories With a Formula

The fast way takes two steps. First, estimate your BMR (basal metabolic rate — what you burn at rest) with the Mifflin-St Jeor formula:

• Men: BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age + 5
• Women: BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age − 161

Then multiply by the activity factor that best matches your typical week: sedentary × 1.2, lightly active × 1.375, moderately active × 1.55, very active × 1.725, extremely active × 1.9.

Worked example: a 40-year-old woman, 150 lbs (68 kg), 5 ft 5 in (165 cm), who exercises lightly 2–3 days a week:
BMR = 10 × 68 + 6.25 × 165 − 5 × 40 − 161 = 680 + 1,031 − 200 − 161 = ≈ 1,350 calories.
Maintenance = 1,350 × 1.375 = ≈ 1,860 calories/day.

Formula estimates are a starting point, not gospel — they land within about ±10–15% for most people. The TDEE calculator runs the same math with your exact stats, and method 2 below shows you how to verify the estimate against reality.

Typical Maintenance Calories by Profile

Notice how much activity matters: the same person can have a maintenance level 500–700 calories higher simply by training regularly and moving more during the day. Body weight matters too — a larger body costs more to run, at rest and in motion.

Method 2: The 2-Week Tracking Test (Your Exact Number)

Formulas guess; your scale tells the truth. The tracking test takes two weeks and gives you a maintenance figure measured from your own life:

1. Weigh yourself every morning for 14 days — after the bathroom, before food or drink — and record each number. Daily weights jump around with water; the weekly average is what counts.
2. Track everything you eat and drink in a food-logging app, as honestly as you can. Do not change your eating to "perform" for the test — eat normally.
3. Compare the two weekly average weights and note your average daily calories across the 14 days.

If your average weight barely moved (within about 0.5 lbs / 0.25 kg), your average intake is your maintenance. Done.

If it moved, adjust with the 3,500-calorie rule of thumb (1 lb of body weight ≈ 3,500 calories):

Two honest warnings. First, the test is only as good as the food log — cooking oils, sauces, and weekend drinks are the usual blind spots, and under-reporting by 200–300 calories a day is extremely common. Second, give the averages time: a single heavy, salty restaurant meal can hold 2–3 lbs of water on the scale for days, which is exactly why we compare weekly averages, not single days.

Why Your Maintenance Calories Change

• Weight change. Lose 15 lbs and maintenance drops with you — a lighter body burns less at rest and in motion. This quiet drift is a top cause of weight-loss plateaus. Recalculate with the maintenance calorie calculator whenever your weight shifts by about 10 lbs (4.5 kg).
• Activity and NEAT. A new job, a new training plan, or simply walking more can move maintenance by several hundred calories. Non-exercise movement (steps, standing, fidgeting) is the most underrated lever.
• Muscle mass. Muscle burns more than fat at rest, so gaining muscle nudges maintenance up — one more reason resistance training pays off during a diet.
• Age. Maintenance drifts down slowly with age, mostly through lost muscle and lower daily movement rather than a "slowing metabolism" — staying active blunts most of it.
• Long dieting. After months in a deficit, the body trims expenditure a little beyond what weight loss alone predicts (adaptive thermogenesis). A few weeks eating at your new estimated maintenance often restores energy and training performance before the next push.

How to Use Your Maintenance Number

Once you know your maintenance, every goal is arithmetic. For fat loss, subtract 300–500 and use our guide on how to calculate a calorie deficit — or let the calorie deficit calculator set the target and timeline. For muscle gain, add a modest 200–300 and prioritize protein. For a diet break or the end of a long cut, return to maintenance deliberately rather than drifting: holding a hard-won weight for 4–8 weeks is what turns a diet into a result. And if you are planning a full day of eating around your number, our walkthrough of how to calculate TDEE shows how the same figure anchors macros and meal planning. You can also browse the full set of body and nutrition calculators to round out your targets.

Maintenance Calories FAQs

Written by the Live Fitness Check editorial team · Reviewed against our calculator methodology · Last updated October 2026

Disclaimer: This guide is for educational purposes only and is not medical advice. Calorie needs vary by individual; consult your doctor or a registered dietitian before starting a weight-loss plan, especially if you are pregnant, nursing, managing a medical condition, or have a history of disordered eating.