Daily Calorie Calculator

Estimate daily calorie needs using age, sex, weight, height, and activity level. This calculator uses the Mifflin-St Jeor equation to estimate basal metabolic rate and then applies an activity multiplier to estimate total daily energy expenditure.

Age (years)

Sex

Weight (kg)

Height (cm)

Activity Level

Daily Calories:

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What the Daily Calorie Calculator does

The Daily Calorie Calculator helps estimate how many calories your body needs each day to maintain your current weight based on your personal details and activity level. If you are trying to understand your energy needs for weight loss, weight gain, or weight maintenance, this tool gives you a practical starting point.

This daily calorie calculator uses the Mifflin-St Jeor equation, which is one of the most widely used methods for estimating basal metabolic rate, or BMR. Your BMR is the number of calories your body burns at rest just to keep essential functions running, such as breathing, circulation, and cell repair. After calculating BMR, the calculator applies an activity multiplier to estimate your total daily energy expenditure, also known as TDEE.

The result label is Daily Calories, which represents an estimated calorie target for your typical day. This is not a medical diagnosis or a perfect measurement, but it is a very useful guide for nutrition planning, fitness goals, and overall health awareness.

Age helps account for metabolic changes over time.
Sex influences the BMR estimate in the formula.
Weight and height are key body-size inputs.
Activity level adjusts the estimate based on how active you are.

How to use the Daily Calorie Calculator

Using the Daily Calorie Calculator is simple and only takes a few steps. Enter your details as accurately as possible to get a more useful estimate of your daily calorie needs.

Enter your age in years.
Select your sex, since the equation uses a different constant for male and female estimates.
Input your weight in kilograms.
Input your height in centimeters.
Choose your activity level from the available options.
Review the result labeled Daily Calories.

For best results, use your current weight and height rather than outdated measurements. Also, try to choose the activity level that matches your real weekly routine, not just your ideal routine. For example, if you sit most of the day and only work out once or twice a week, selecting a very high activity level may lead to an overestimated calorie need.

You can use the result in several ways:

To estimate a maintenance calorie target
To create a calorie deficit for fat loss
To create a calorie surplus for muscle gain
To compare your intake against your estimated needs

How the Daily Calorie Calculator formula works

The Daily Calorie Calculator follows this formula:

((10 * weight_kg) + (6.25 * height_cm) – (5 * age_years) + sex) * activity_level

Here is what each part means:

10 * weight_kg: heavier bodies generally require more energy.
6.25 * height_cm: taller bodies often require more energy too.
5 * age_years: calorie needs tend to decrease with age.
sex: a constant is added based on the selected sex to reflect average differences in body composition and metabolic needs.
activity_level: this multiplies your BMR to estimate how many calories you burn in a full day, including movement and exercise.

In simple terms, the calculator first estimates your basal metabolic rate and then scales it based on how active you are. That means the final Daily Calories number is more realistic than a resting-only estimate.

Example structure:

A person with a larger body size may have a higher BMR.
A very active person will usually need more calories than a sedentary person with the same body size.
Two people with similar height and weight can still have different calorie needs because of age, sex, and activity level.

This is why the daily calorie calculator is useful: it combines the most important factors into one quick estimate.

Use cases for the Daily Calorie Calculator

The Daily Calorie Calculator can be helpful in many everyday situations. Whether you are managing weight, training for performance, or simply trying to eat more intentionally, this tool offers a starting point for smarter decisions.

Weight loss planning: Use the estimate to create a moderate calorie deficit while still getting enough energy.
Weight maintenance: Match your intake to your estimated daily needs to keep your weight stable.
Muscle gain: Add calories above your estimated daily needs to support training and recovery.
Fitness tracking: Compare your intake with your estimated energy expenditure over time.
Meal planning: Build more balanced meal plans around a calorie target.
Nutrition education: Learn how age, sex, body size, and activity affect calorie needs.

For athletes, the daily calorie calculator can be a useful baseline when planning performance nutrition. For people with more sedentary lifestyles, it can also highlight how even modest changes in activity may change calorie needs. If you are trying to improve body composition, knowing your estimated daily calories can help you avoid eating too little or too much.

Other factors to consider when calculating Daily Calories

Although the Daily Calorie Calculator is a strong estimate, it does not capture every detail about your body or lifestyle. Several other factors can affect real-world calorie needs.

Body composition: Muscle tissue burns more calories than fat tissue, so two people with the same weight may have different needs.
Metabolic adaptation: Long-term dieting, overeating, or major weight changes can influence metabolism.
Hormonal factors: Thyroid function, menstrual cycles, and other hormonal changes can affect energy expenditure.
Non-exercise activity: Walking, standing, chores, and fidgeting can add up throughout the day.
Training intensity: A hard workout day may burn more energy than the same amount of time spent doing light activity.
Health conditions: Certain medical conditions and medications can change appetite or metabolic rate.

Because of these variables, it is best to use the result as a starting point and adjust based on your real-world progress. If your weight stays the same over a few weeks, your intake is likely close to maintenance. If your weight changes too quickly or too slowly, you can fine-tune your calories.

It is also important to remember that not all activity levels are equal. A person who works a physically demanding job may need more calories than someone who exercises for 30 minutes a day but sits for most of the day otherwise. Be honest when selecting your activity level for the most useful estimate.

FAQ about the Daily Calorie Calculator

How accurate is the Daily Calorie Calculator?

The Daily Calorie Calculator provides a solid estimate, but it is not exact. It is based on the Mifflin-St Jeor equation and activity multipliers, which work well for many people. However, individual metabolism, body composition, and lifestyle factors can make your actual calorie needs slightly higher or lower.

Can I use the Daily Calorie Calculator for weight loss?

Yes. You can use the estimated Daily Calories as a maintenance baseline and then reduce your intake to create a calorie deficit. Many people start with a modest deficit rather than cutting calories too aggressively, because extreme restriction can be harder to maintain.

Why does sex affect the calorie estimate?

Sex is included in the equation because average differences in body composition and metabolism can influence calorie needs. The calculator uses this information as part of the BMR estimate, which is then adjusted by activity level.

What activity level should I choose?

Choose the activity level that best matches your typical week. If you mostly sit during the day and only do light exercise, select a lower activity level. If you train hard or have a physically demanding job, choose a higher one. Honest input gives the most useful result.

Should I eat exactly the number shown by the calculator?

Not necessarily. The result is an estimate, not a strict rule. Many people use it as a starting point and then adjust based on hunger, energy, training performance, and changes in body weight over time.

In summary, the Daily Calorie Calculator is a convenient way to estimate your daily energy needs using age, sex, weight, height, and activity level. Whether your goal is fat loss, muscle gain, or maintenance, this tool can help you make more informed nutrition choices and better understand how your body uses energy.

Support this tool

Buy us a coffee

If this Daily Calorie Calculator helped you, support the site with a small donation. It keeps the tools on the site free and supports ongoing improvements.

Buy us a coffee

Secure donation via Gumroad

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Mini Cut Calorie Calculator Estimate daily calories for a short mini cut based on your maintenance calories, body weight, mini cut length, training activity, and desired aggression level. Try it → Mini Cut Calorie Calculator

Calorie Calculator for Cutting Estimate daily calorie intake for a cutting phase using body weight, height, age, sex, activity level, and desired calorie deficit. Try it → Calorie Calculator for Cutting

Calorie Deficit Calculator Estimate your daily calorie target for weight loss using age, sex, weight, height, activity level, and desired calorie deficit. Try it → Calorie Deficit Calculator

Cutting Calorie Calculator Estimate daily cutting calories by calculating maintenance calories from body weight, height, age, sex, and activity level, then applying a calorie deficit for fat loss. Try it → Cutting Calorie Calculator

Calorie Surplus Calculator Estimate your daily calorie target for weight gain by adding a calorie surplus to your maintenance calories based on body weight, activity level, and desired weekly weight gain. Try it → Calorie Surplus Calculator

Clean Bulk Calorie Calculator Estimate daily calories for a clean bulk using body weight, height, age, sex, activity level, and desired lean gain rate. Try it → Clean Bulk Calorie Calculator

Lean Bulk Calorie Calculator Estimate daily calories for a lean bulk using body weight, height, age, sex, activity level, and a small calorie surplus on top of maintenance needs. Try it → Lean Bulk Calorie Calculator

Bulking Calorie Calculator Estimate daily calories for a bulking phase using body weight, height, age, sex, activity level, and desired calorie surplus. Try it → Bulking Calorie Calculator

Calorie Calculator for Muscle Gain Estimate daily calorie needs for muscle gain using body weight, height, age, sex, activity level, and a calorie surplus. Try it → Calorie Calculator for Muscle Gain

Calorie Calculator Estimate daily calorie needs using age, sex, weight, height, and activity level based on the Mifflin-St Jeor equation. Try it → Calorie Calculator

Bodybuilding Calorie Calculator Estimate daily calories for bodybuilding based on body weight, height, age, sex, activity level, and goal. Try it → Bodybuilding Calorie Calculator

Total Daily Energy Expenditure Calculator Estimate total daily energy expenditure (TDEE) using the Mifflin-St Jeor equation for basal metabolic rate and an activity multiplier. Try it → Total Daily Energy Expenditure Calculator

TDEE Calculator Estimate total daily energy expenditure using the Mifflin-St Jeor equation for BMR and an activity multiplier. Try it → TDEE Calculator

Maintenance Calories Calculator Estimate your daily maintenance calories using weight, height, age, sex, and activity level based on the Mifflin-St Jeor equation multiplied by an activity factor. Try it → Maintenance Calories Calculator

Maintenance Calorie Calculator Estimate your daily maintenance calories using age, sex, weight, height, and activity level based on the Mifflin-St Jeor equation with an activity multiplier. Try it → Maintenance Calorie Calculator

Calorie Needs Calculator Estimate daily calorie needs using age, sex, weight, height, and activity level based on the Mifflin-St Jeor equation and an activity multiplier. Try it → Calorie Needs Calculator

Calorie Intake Calculator Estimate daily calorie intake based on age, sex, weight, height, and activity level using a basal metabolic rate calculation adjusted for lifestyle. Try it → Calorie Intake Calculator

Body Measurement Progress Calculator Calculate the percentage change in a body measurement from a starting value to a current value, with an optional target measurement to estimate progress toward your goal. Try it → Body Measurement Progress Calculator

Weight Loss Percentage Calculator Calculate the percentage of body weight lost based on starting weight and current weight. Try it → Weight Loss Percentage Calculator

Calf Size Calculator Estimate calf circumference based on height, weight, age, and sex using a practical body-size formula. Try it → Calf Size Calculator

Chest Size Calculator Estimate chest circumference based on body measurements and body composition factors. Try it → Chest Size Calculator

Arm Size Calculator Estimate upper arm circumference based on sex, height, weight, age, and training level. Try it → Arm Size Calculator

Body Proportion Calculator Estimate common body proportion ratios using height, shoulder width, waist circumference, hip circumference, and inseam length. Try it → Body Proportion Calculator

Golden Ratio Body Calculator Estimate how closely key body proportions align with the golden ratio using shoulder-to-waist, waist-to-hip, and leg-to-height relationships. Try it → Golden Ratio Body Calculator

Shoulder to Waist Ratio Calculator Calculate the shoulder-to-waist ratio using shoulder circumference and waist circumference measurements. Try it → Shoulder to Waist Ratio Calculator

Waist to Hip Ratio Calculator Calculate your waist-to-hip ratio (WHR) using waist and hip measurements. Try it → Waist to Hip Ratio Calculator

Waist to Height Ratio Calculator Calculate your waist-to-height ratio by dividing waist circumference by height. Try it → Waist to Height Ratio Calculator

Body Fat Weight Loss Calculator Estimate how much body weight you need to lose to reach a target body fat percentage while preserving lean body mass. Try it → Body Fat Weight Loss Calculator

Ideal Weight Calculator Estimate an ideal body weight using height, gender, frame size, and formula method. Try it → Ideal Weight Calculator

Target Weight at Body Fat Calculator Estimate your target body weight based on your current weight, current body fat percentage, desired body fat percentage, and expected lean mass change. Try it → Target Weight at Body Fat Calculator

Target Weight Calculator Estimate a target body weight based on height, sex, body frame, and desired BMI using a practical health-oriented formula. Try it → Target Weight Calculator

Target Body Fat Calculator Estimate your target body weight needed to reach a desired body fat percentage based on your current weight and current body fat. Try it → Target Body Fat Calculator

Natural Muscle Potential Calculator Estimate a realistic natural muscular bodyweight potential based on height, wrist size, ankle size, and body fat percentage using a frame-size adjusted formula. Try it → Natural Muscle Potential Calculator

Maximum Muscle Potential Calculator Estimate your potential lean body mass and maximum muscular body weight based on height, wrist size, ankle size, and body fat percentage using a frame-size-adjusted formula inspired by classic natural bodybuilding models. Try it → Maximum Muscle Potential Calculator

Maximum Muscular Potential Calculator Estimate maximum muscular bodyweight potential at a lean condition using wrist size, ankle size, height, and sex. Try it → Maximum Muscular Potential Calculator

Bodybuilding Ideal Weight Calculator Estimate an ideal bodybuilding body weight based on height, wrist size, body fat percentage, and sex. Try it → Bodybuilding Ideal Weight Calculator

Ideal Body Weight Calculator Estimate ideal body weight using common clinical formulas based on height, sex, and formula method. Try it → Ideal Body Weight Calculator

Body Recomposition Calculator Estimate your daily calorie target for body recomposition by combining lean body mass, activity level, training experience, and goal aggressiveness into a practical maintenance-adjusted intake. Try it → Body Recomposition Calculator

Lean Mass Calculator Estimate lean body mass using body weight and body fat percentage, with support for either kilograms or pounds. Try it → Lean Mass Calculator

Normalized FFMI Calculator Estimate normalized Fat-Free Mass Index (FFMI) by adjusting FFMI to a reference height of 1.80 m. Try it → Normalized FFMI Calculator

Fat Free Mass Index Calculator Calculate Fat Free Mass Index (FFMI) using body weight, height, and body fat percentage. Try it → Fat Free Mass Index Calculator

FFMI Calculator Calculate Fat-Free Mass Index (FFMI) using weight, height, and body fat percentage. Try it → FFMI Calculator

Muscle Mass Percentage Calculator Estimate muscle mass percentage by dividing total skeletal muscle mass by total body weight and converting the result to a percentage. Try it → Muscle Mass Percentage Calculator

Muscle Mass Calculator Estimate skeletal muscle mass using body weight, height, age, sex, and body fat percentage. Try it → Muscle Mass Calculator

Fat Mass Calculator Estimate total fat mass in the body using body weight and body fat percentage. Try it → Fat Mass Calculator

Seven Site Skinfold Calculator Estimate body density and body fat percentage from seven skinfold measurements using the Jackson-Pollock 7-site method and Siri equation. Try it → Seven Site Skinfold Calculator

BMI Calculator Calculate Body Mass Index (BMI) using weight and height, with support for metric and imperial units. Try it → BMI Calculator

Three Site Skinfold Calculator Estimate body fat percentage using the Jackson-Pollock 3-site skinfold method with age and sex-specific formulas. Try it → Three Site Skinfold Calculator

Skinfold Body Fat Calculator Estimate body fat percentage using the 3-site Jackson-Pollock skinfold method with age and sex. Try it → Skinfold Body Fat Calculator

Navy Body Fat Calculator Estimate body fat percentage using the U.S. Try it → Navy Body Fat Calculator

Army Body Fat Calculator Estimate body fat percentage using the U.S. Try it → Army Body Fat Calculator

Body Fat Percentage Calculator Estimate body fat percentage using the U.S. Try it → Body Fat Percentage Calculator

Body Fat Calculator Estimate body fat percentage using the U.S. Try it → Body Fat Calculator

Body Mass Index Calculator Calculate body mass index (BMI) using weight and height, with support for metric and imperial units. Try it → Body Mass Index Calculator

Powerlifting Weight Class Calculator Estimate the applicable powerlifting weight class based on body weight, federation style, division, and weigh-in policy. Try it → Powerlifting Weight Class Calculator

Wilks Score Calculator Calculate a Wilks score from bodyweight, total lifted, sex, and unit system using the classic Wilks coefficient formula. Try it → Wilks Score Calculator

Bench Squat Deadlift Total Calculator Calculate your powerlifting total by adding your best bench press, squat, and deadlift lifts, with an optional unit conversion factor for kilograms or pounds. Try it → Bench Squat Deadlift Total Calculator

Big Three Total Calculator Calculate your Big Three total by adding the degree positions of your Sun, Moon, and Rising signs. Try it → Big Three Total Calculator

Powerlifting Total Calculator Calculate your powerlifting total by adding your best squat, bench press, and deadlift attempts, with optional unit conversion from pounds to kilograms. Try it → Powerlifting Total Calculator

IPF Points Calculator Calculate IPF GL points for a powerlifting total based on sex, equipment, bodyweight, and total lifted. Try it → IPF Points Calculator

DOTS Score Calculator Calculate a DOTS powerlifting score using lifter bodyweight, total lifted, sex, and equipment category. Try it → DOTS Score Calculator

DOTS Calculator Estimate the total cost of a DOTS package based on the number of doses, treatment duration, supervision level, and medication cost per dose. Try it → DOTS Calculator

Weighted Dip Calculator Estimate the total weighted dip training load by combining added weight, bodyweight contribution, reps, and sets. Try it → Weighted Dip Calculator

Overhead Press Max Calculator Estimate your one-rep max for the overhead press using the weight lifted, repetitions completed, lifting unit, and training experience. Try it → Overhead Press Max Calculator

Weighted Pull Up Calculator Calculate total system weight and relative pulling load for weighted pull-ups using body weight, added weight, reps, and unit selection. Try it → Weighted Pull Up Calculator

Pull Up One Rep Max Calculator Estimate your weighted pull-up one rep max using bodyweight, added weight, and the maximum reps completed. Try it → Pull Up One Rep Max Calculator

Barbell Row Max Calculator Estimate your one-rep max for the barbell row using the weight lifted, repetitions completed, training experience, and exercise form strictness. Try it → Barbell Row Max Calculator

Hip Thrust Max Calculator Estimate your one-rep max for the hip thrust using the weight lifted, repetitions completed, bodyweight contribution, and training experience. Try it → Hip Thrust Max Calculator

Leg Press Max Calculator Estimate your one-rep max (1RM) on the leg press using the weight lifted, repetitions completed, leg press machine type, training experience, and effort level. Try it → Leg Press Max Calculator

Military Press Max Calculator Estimate your one-rep max for the military press using the weight lifted, repetitions completed, lift style, training experience, and fatigue level. Try it → Military Press Max Calculator

Shoulder Press Max Calculator Estimate your one-rep max for the shoulder press using the weight lifted, reps completed, training experience, and movement variation. Try it → Shoulder Press Max Calculator

Overhead Press 1RM Calculator Estimate your one-rep max for the overhead press using the weight lifted and repetitions completed. Try it → Overhead Press 1RM Calculator

Romanian Deadlift Max Calculator Estimate your one-rep max for the Romanian deadlift using the weight lifted, reps completed, lift tempo quality, and training experience. Try it → Romanian Deadlift Max Calculator

Deadlift Max Calculator Estimate your one-rep max deadlift using the weight lifted, reps completed, body weight, lifting experience, and deadlift style. Try it → Deadlift Max Calculator

Deadlift Volume Calculator Calculate total deadlift training volume based on weight lifted, reps per set, number of sets, and workout intensity. Try it → Deadlift Volume Calculator

Deadlift Bodyweight Ratio Calculator Calculate your deadlift-to-bodyweight ratio using your body weight, deadlift weight, unit system, lift type, and training experience. Try it → Deadlift Bodyweight Ratio Calculator

Deadlift Strength Calculator Estimate your one-rep max deadlift using weight lifted, reps performed, body weight, and training experience, with a small experience adjustment and bodyweight normalization factor. Try it → Deadlift Strength Calculator

Deadlift Training Max Calculator Estimate your deadlift training max using a recent lifted weight, reps completed, and a chosen training max percentage. Try it → Deadlift Training Max Calculator

Deadlift Percentage Calculator Calculate a deadlift training weight based on your one-rep max, chosen training percentage, reps, and training experience. Try it → Deadlift Percentage Calculator

Deadlift 1RM Calculator Estimate your one-rep max for the deadlift using lifted weight, completed reps, bodyweight, experience level, and training style. Try it → Deadlift 1RM Calculator

Deadlift One Rep Max Calculator Estimate your deadlift one-rep max based on the weight lifted, repetitions completed, training experience, and lift style. Try it → Deadlift One Rep Max Calculator

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