Calorie Needs Calculator
Estimate how many calories your body needs each day based on your age, gender, height, weight, and activity level. This tool gives a general daily calorie estimate for maintenance.
What This Calculator Estimates
This calculator estimates your daily calorie needs for weight maintenance. It first calculates your Basal Metabolic Rate (BMR) and then adjusts it based on your activity level.
Your BMR is the number of calories your body needs at rest to support basic functions such as breathing, circulation, and temperature regulation.
Formula Used
This calculator uses the Mifflin-St Jeor Equation, one of the most widely used formulas for estimating calorie needs.
Male: BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) + 5
Female: BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) − 161
Daily calorie needs are estimated by multiplying your BMR by an activity factor based on your activity level.
Important Note
This result is only an estimate. Real calorie needs vary depending on body composition, metabolism, hormones, health conditions, and personal goals.
If you need a more accurate nutrition plan, consider speaking with a qualified healthcare professional or registered dietitian.
Frequently Asked Questions
How many calories should I eat per day?
Daily calorie needs vary depending on age, gender, body size, and activity level. This calculator provides a general estimate for weight maintenance.
What is BMR?
BMR stands for Basal Metabolic Rate. It represents the number of calories your body needs to maintain basic functions at rest.
Can I use this calculator for weight loss?
Yes. After estimating your maintenance calories, people often reduce their calorie intake slightly to support gradual weight loss.
Is this calorie calculator accurate?
It provides a scientifically based estimate, but real calorie needs may vary between individuals.