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Daily Calorie Calculator

Enter your age, gender, weight, height, and activity level. This calculator goes far beyond a single number: it shows your daily calories at every activity pace, compares two major formulas, projects when you would reach a goal weight, splits your calories into protein, carbs, and fat, and tells you how much to aim for at each meal - all from one click.

Enter your details, pick a goal and macro style, then click Calculate to see your daily calories, goal projection, macros, and meal plan

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How to Use the Daily Calorie Calculator

1

Enter your age and gender

Type an age between 1 and 120 and pick a gender. The gender changes the formula constant used to find your resting burn.

2

Set the weight unit and enter your weight

Tap kg or lb on the switch, then type your current body weight into the box below it.

3

Set the height unit and enter your height

Switch between cm and ft + in. For feet and inches, fill in both boxes, keeping inches below 12.

4

Choose your activity level

Pick the level that matches your typical week, because it decides the multiplier applied to your resting burn.

5

Set a goal, a macro style, and your meals

Choose to maintain, lose, or gain weight and enter a goal weight. Pick a macro split and how many meals you plan to eat, then click Calculate.

6

Read your full result

See your daily calories for your goal, your calories at every activity pace, two formula estimates, a goal projection date, macro grams, a per-meal plan, and your healthy weight range.

Your Daily Calories, Your Goal Projection, and Your Macros - All in One View

Calories are the energy your body uses for everything it does, from pumping blood to lifting weights. If you take in more than you burn you gain, and if you take in less you lose. That is the whole story of weight change. But most online calorie tools stop at one number and leave you to guess what to do with it. This one goes further: it shows your daily calories at every activity pace, compares two trusted formulas so you see how much they agree, projects when you would reach a chosen goal weight and translates it into a daily calorie target, splits that target into grams of protein, carbs, and fat, and even tells you how much to aim for at each meal. Enter your details and within seconds you will have a practical plan instead of a single guess.

The Mifflin-St Jeor Equation Behind the Number

This calculator works out your Basal Metabolic Rate using the Mifflin-St Jeor equation, developed in 1990 and now considered the most accurate formula for the general population. For men it is 10 times weight in kilograms, plus 6.25 times height in centimetres, minus 5 times age, plus 5. For women it is the same subtraction but minus 161 instead of plus 5. When no male or female gender is chosen, the calculator uses the midpoint between the two. Your resting burn is then multiplied by an activity factor to reach your daily maintenance calories.

Your Daily Calories at Every Activity Pace

Most calculators quietly pick one activity level and never show you the alternatives. This one lists all five standard levels - Sedentary at 1.2, Lightly Active at 1.375, Moderately Active at 1.55, Active at 1.725, and Very Active at 1.9 - each showing the daily calories your body would need at that pace. Your chosen level is highlighted. For a person with a resting burn of 1,500 calories, a desk job sits near 1,800 while a demanding physical job plus daily training pushes toward 2,850. That spread is exactly why picking the right level matters.

Two Formulas Compared: See the Confidence Behind the Answer

This tool builds in a head-to-head. It shows your Mifflin-St Jeor resting burn and daily calories next to an estimate from the older Harris-Benedict equation, plus a plain sentence telling you how many calories apart the two methods land. For a typical adult the two usually sit within a small margin, so if they disagree a lot you know to treat the number as a range. Seeing both helps you judge the reliability of the answer rather than trusting one formula blindly.

Your Goal Projection: When Will You Get There?

The most practical feature turns your calorie target into a calendar. Choose to lose or gain weight, enter a goal weight, and the tool works out a steady weekly pace - about half a kilogram a week when losing and a quarter kilogram when gaining - then projects how many weeks it would take and the approximate date you would arrive. It also sets your daily calorie target from that pace: about 500 calories under maintenance to lose, or 250 above to gain. If your entered target is not in the direction of your goal, the tool gently falls back to maintenance rather than giving you a contradictory plan.

A Macro Split: Grams of Protein, Carbs, and Fat

Calorie count is only half the story; where those calories come from matters. The result panel splits your daily target into grams of protein, carbs, and fat using the style you chose. Protein provides about 4 calories per gram, carbs about 4, and fat about 9, so fewer grams of fat still pack the same energy. The Standard style is 30 percent protein, 40 percent carbs, and 30 percent fat; High Protein shifts toward 40 percent protein; Low Carb reduces carbs toward 20 percent. Each macro shows its grams and the calories they provide, so you can plan real foods around them.

A Per-Meal Plan for a 2, 3, 4, or 5-Meal Day

A daily number is easier to follow when you know how it breaks down across your day. Choose how many meals you plan to eat and the tool divides your calorie target evenly across them, telling you how much to aim for at each sitting. Whether you prefer two larger meals or five smaller ones, you will always know roughly where your intake should stand by the end of each meal rather than guessing at dinner.

A Healthy Weight Range Reality Check

Goals should sit inside a healthy band, so this tool also computes your healthy weight range from your height using body mass index cut-offs of 18.5 and 24.9. The range is shown in the result so you can check whether your goal weight is realistic. A person 1.75 m tall sees a healthy band of roughly 56.7 to 76.3 kg. If your goal sits far outside that band, it is worth revisiting with a little caution and, ideally, a conversation with a professional.

Why a Personal Calorie Number Beats a Generic One

The myth that "everyone needs about 2,000 calories" fails because your burn depends on your weight, height, age, gender, and how active you are. Two people of the same age can differ by several hundred calories a day. Using a number sized to your own body turns weight management from guesswork into a plan you can count and adjust. Recalculate after your weight changes by about 5 kg or 10 lb, or whenever your activity level shifts, to keep the target accurate.

This calculator is for informational purposes only and is not medical advice. Always consult a qualified healthcare professional about your nutrition and health.

Frequently Asked Questions

The main number is the daily calories you should eat for your chosen goal. If you choose maintain, it is your maintenance calories at your activity level. If you choose lose or gain, it adjusts by about 500 under or 250 above maintenance to move you toward your goal weight.
The main result uses the Mifflin-St Jeor equation, widely considered the most accurate formula for the general population. The results also show a Harris-Benedict estimate alongside it so you can compare the two and judge how confident the answer is.
Choose to lose or gain, enter a goal weight, and the tool applies a steady weekly pace of about half a kilogram when losing and a quarter kilogram when gaining. It divides the difference by that pace, rounds up to whole weeks, and adds the weeks to today to show a target date, plus the daily calorie target those numbers imply.
A macro split tells you how much of your daily calories come from protein, carbs, and fat. Standard is 30 percent protein, 40 percent carbs, and 30 percent fat. High Protein is 40 percent protein, useful if you strength train. Low Carb is 20 percent carbs and 50 percent fat. Pick the style that matches your diet and preferences.
How you space your intake is a personal choice. Dividing your daily calorie target evenly across 2 to 5 meals gives you a simple target for each sitting, so you can tell when you are on track. The total is the same either way - only the portions change.
It is the weight band that gives you a body mass index between 18.5 and 24.9 at your height. Use it as a reality check when setting a goal weight. If your target falls well outside it, reconsider the goal before making big dietary changes.
The calculator is designed for adults. Children, teens, and people who are pregnant or breastfeeding have different calorie needs. Use it for general guidance only and consult a healthcare provider for personal advice.
Recalculate whenever your weight changes by about 5 kg or 10 lb, or when your activity level shifts. For most people tracking goals, every two to three months is enough. There is no need to recalculate for small daily fluctuations.
Formula estimates are typically within about 10 percent of a true lab measurement for around 70 percent of people. Muscle mass, thyroid function, medications, and genetics all shift the real number. Treat these figures as a starting point and adjust with real-world weight data over a few weeks.
If you choose to lose but enter a goal above your current weight, or choose to gain with a target below it, the tool falls back to maintenance rather than showing a confusing projection. It still shows your macros and meal plan based on maintenance so the result stays useful.
No. Everything is calculated locally in your browser with plain JavaScript. Your age, gender, weight, and height are never stored, transmitted, or logged, and there are no cookies or data collection. Your privacy is fully protected.