What Is My Daily Calorie Intake? Find Your Number

What Is My Daily Calorie Intake? How to Find Your Number

Your daily calorie intake depends on your age, height, weight, sex, and activity level—there's no single number that works for everyone. Most adults fall somewhere between 1,600 and 3,000 calories per day to maintain their current weight. Once you know your maintenance number, you can adjust from there based on your goals.

So here's the thing people get wrong all the time: they search for a calorie number without realizing that number is completely personal. Your coworker's 1,800-calorie plan might leave you exhausted or cause you to gain weight. Context matters—a lot.

Start With Your Calorie Maintenance Number

Before anything else, you need to figure out what is your calorie maintenance level—meaning, how many calories your body burns on an average day just to keep things running. This is called your Total Daily Energy Expenditure (TDEE). It includes your basal metabolic rate (BMR, basically what you burn doing nothing) plus the calories burned through movement, digestion, and daily activity.

A common formula used by dietitians is the Mifflin-St Jeor equation. For a 35-year-old woman who weighs 150 lbs, stands 5'5", and exercises 3 days a week, her TDEE comes out to roughly 2,050 calories per day. That's her maintenance. Not 1,200. Not 2,500. Hers.

What Happens When You Go Above or Below That Number

Once you know your maintenance calories, you've got three directions to go:

Eat at maintenance — your weight stays roughly stable
Eat in a calorie deficit — you consume fewer calories than you burn, which over time leads to weight loss
Eat in a surplus — you consume more, which supports muscle building

A typical calories deficit diet plan subtracts around 300–500 calories from your TDEE. So for that same woman above, a sensible diet plan for calorie deficit would land her around 1,550–1,750 calories per day—not the blanket 1,200 calorie eating plan you see everywhere online. (And honestly, 1,200 is too low for most people. I've seen clients hit that number and wonder why they're constantly tired and hungry.)

How Many Calories Should Be in Breakfast?

A good rule of thumb is that breakfast should account for roughly 20–25% of your daily calories. For someone eating 1,800 calories a day, that's around 360–450 calories—think two eggs on whole grain toast with half an avocado, or Greek yogurt with berries and a handful of granola. Skipping it entirely tends to backfire for most people, leading to bigger portions later in the day.

Not sure where your number actually lands? Our personalized meal planning quiz calculates your TDEE and builds a realistic daily breakdown around your lifestyle—not someone else's.

Practical Example

Take Marcus—38 years old, 185 lbs, works a desk job but hits the gym twice a week. His TDEE comes out to about 2,300 calories. He wants to lose weight gradually without feeling miserable, so he drops to 1,850 calories a day (a 450-calorie deficit). His day looks something like this: breakfast at 420 calories (oatmeal with banana and peanut butter), lunch at 550 calories (grilled chicken wrap with a side salad), an afternoon snack at 180 calories (apple and string cheese), and dinner at 700 calories (salmon, roasted sweet potato, and steamed broccoli). That leaves him a little buffer for a small evening snack if he needs it. It's not a dramatic cut—but over 8 weeks, it adds up to real, sustainable progress.

Who This Helps

This is useful for pretty much anyone who's felt confused by calorie advice online—people who've tried a generic 1,200-calorie plan and felt awful, folks who are just getting started with nutrition, or anyone who's been eating 'healthy' but still not seeing the results they expected. It's especially relevant for adults in their 30s and 40s whose metabolism and lifestyle don't match the one-size-fits-all calorie guides floating around the internet.