Important Disclaimer — Not Financial Advice
The results from this calculator are for informational and educational purposes only. They are not a guarantee of actual outcomes and should not be considered financial, investment, tax, or legal advice. Always consult a qualified professional for advice tailored to your specific financial situation. See our Terms of Service and Privacy Policy for more information.
The QFINHUB Calorie Calculator estimates the total number of calories your body requires daily to maintain, lose, or gain weight based on your unique physiological profile. Understanding your caloric needs is a fundamental step in managing your health, energy levels, and long-term wellness goals effectively.
A calorie calculator estimates the number of calories a person needs to consume daily to maintain, lose, or gain weight based on factors like age, sex, weight, height, and activity level.
Calorie calculators typically use formulas like the Mifflin-St Jeor equation to estimate basal metabolic rate.
Your total daily energy expenditure is calculated by multiplying your basal metabolic rate by an activity factor.
To lose weight, you generally need to consume fewer calories than your total daily energy expenditure.
Calorie needs vary based on individual factors and should be adjusted for sustainable results.
Mifflin-St Jeor Equation: For men: (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) + 5; For women: (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) - 161. Then multiply by your Activity Factor.
This formula calculates your Basal Metabolic Rate (BMR), which represents the energy your body burns at rest, and then adjusts that figure based on your daily physical activity level to determine your Total Daily Energy Expenditure (TDEE).
Whether you are training for a marathon, trying to shed a few pounds before a vacation, or simply looking to maintain a healthy weight, this calculator acts as your nutritional roadmap. By identifying your TDEE, you can create a structured meal plan that aligns with your specific objectives. It is an essential tool for anyone looking to transition from guesswork to data-driven health management. Consistency in tracking these numbers allows you to adjust your intake based on real-world results over time.
If a 30-year-old male weighing 80kg and standing 180cm tall has a sedentary lifestyle, his BMR is approximately 1,775 calories. After applying a sedentary activity multiplier of 1.2, his total daily requirement becomes roughly 2,130 calories to maintain his current weight.
These authoritative sources inform our calculator methodology and ensure accuracy.
Written by Qasem Mohammed
Financial tools developer and founder of QFINHUB. All calculators are built with industry-standard formulas and reviewed for accuracy. Content is for educational purposes only — always consult a qualified financial professional for decisions about your specific situation.
Last updated: June 25, 2026 ·About QFINHUB · Editorial Policy
Last reviewed by Qasem Mohammed — June 25, 2026
AI & Software Engineer, Founder & Lead Developer at QFINHUB · Editorial Policy
Perform basic arithmetic operations including addition, subtraction, multiplication, and division.
BasicCalculate the future value of money adjusted for inflation over time.
BasicConvert between different currencies with live exchange rates.
BasicCalculate discounted prices, savings amounts, and final sale prices.
BasicCalculate percentages, percentage change, and percentage of any number with ease.
BasicCalculate your Body Mass Index and see which weight category you fall into.
BasicCalculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) to manage your weight.
Basal Metabolic Rate (BMR)
1,648.75
Daily Calories (TDEE)
2,267.03
Lightly Active activity
Weight Loss (−500 cal/day)
1,767.03
Weight Gain (+500 cal/day)
2,767.03