How To Find Your Maintenance Calories In Two Weeks
You find your maintenance calories by tracking your food honestly for two weeks, weighing yourself every morning, and comparing the weekly average weight against the calories you ate. A calculator can guess at the number, but only your own data can measure it.
That is the method Paul Callender uses with his online coaching clients at CAL.507, and it is simpler than most people expect. The hard part is not the maths. It is logging the food you would rather not log.
What are maintenance calories?
Maintenance calories are the average daily intake that keeps your body weight broadly stable under your current conditions. Treat it as a working number that gets reviewed, not a fixed fact about you.
The NHS guide figures are 2,500 calories a day for an average man and 2,000 for an average woman, and it points out that yours could differ based on your age, weight, height and how much exercise you do. Your maintenance is made up of four parts:
- Resting needs. Keeping your organs and basic systems running. Usually the largest share.
- Daily movement. Steps, standing, work and fidgeting. This is the biggest variable.
- Training. Resistance work, cardio and sport.
- Digestion. The energy used to process what you eat. A smaller share.
This is why two people can train together and still need very different amounts of food.
How do you find your maintenance calories?
Log everything you eat for two weeks, weigh yourself each morning under the same conditions, and keep your steps and training steady. Then compare the average weight of week one with the average of week two.
- Track food honestly. Calories and macros, including the oil, the sauces, the milk in your coffee and the bites while cooking.
- Weigh daily. Same time, same conditions, first thing in the morning.
- Hold everything else steady. Same steps, same training, no new cardio.
- Compare the weekly averages. The average matters far more than any single weigh-in.
If your average weight has not really moved, the calories you averaged are close to your maintenance.
How do you work it out if your weight changed?
Turn the weekly trend into a daily number and add it to what you ate. If you lost weight, your maintenance is higher than your intake, and if you gained, it is lower.
Here is the worked example Paul gives his clients. You averaged 2,300 calories a day and your average weight dropped by about 0.35 kilos over the week. That works out at a deficit of roughly 400 calories a day, so your maintenance is around 2,700.
Treat that as a coaching estimate, not a perfect equation. Short-term weight changes include water and digestive content, not only fat, which is exactly why one week is not a verdict.
What should you eat once you know your maintenance?
Move your calories in the direction of your goal, using the smallest change that works. Then watch the trend before you change anything else.
| Goal | What to eat | What the trend should do |
|---|---|---|
| Fat loss | A sustainable deficit | Move down steadily |
| Maintenance | Around maintenance | Stay broadly stable |
| Muscle gain | A controlled surplus | Rise slowly |
If you have ever cut your calories hard and watched your training fall apart, you already know why smaller is better. A big cut feels productive for a fortnight, and then the hunger and the fatigue undo it.
Why does your maintenance keep changing?
Because the things it is made of keep changing, particularly your body weight and how much you move. Lose weight and your maintenance usually falls with it, and a quieter month at a desk can do the same without you noticing.
Daily movement is the part that swings most. That is why a repeatable step target earns its place: it keeps that part of the sum measurable, and your step count can raise your output without taking more food away.
What should you do if your weight stops moving?
Check the tracking first, then change one thing and give it time. A short plateau or one high weigh-in is not enough evidence to change a plan.
Before you touch anything, ask whether the food was tracked accurately, what the weekly average is doing, whether your steps and cardio were consistent, and how your training, hunger and sleep are. Then make one change. It feels slower, but if you change three things at once and the trend moves, you have no idea which one worked.
The honest summary
Maintenance is not a number to look up. It is a number you measure, and two boring weeks will tell you more than any calculator.
If you would rather not do this on your own, it is built into online personal training with Paul: your food, your steps and your weight get read together every week, and one thing changes at a time. Getting enough protein each day is the next thing to sort once your calories are set.
Common questions
What are maintenance calories?
Maintenance calories are the average daily intake that keeps your body weight broadly stable under your current conditions. It is a moving target, because it shifts with your weight, your steps, your training and your food.
Are online maintenance calorie calculators accurate?
They give you a reasonable place to start, but they are estimating from averages, not measuring you. Two weeks of honest tracking tells you far more, because it uses what your own body actually did.
How long does it take to find your maintenance calories?
About two weeks of accurate food tracking and daily morning weigh-ins is enough to get a working number. A third week makes the trend easier to trust.
How many calories below maintenance should I eat to lose weight?
Use the smallest deficit that moves your weight trend in the right direction, because the smallest effective change gives you the best information. If the trend moves and your training and hunger are manageable, leave it alone.