Dietary references inspired by world-class athletes. Individual needs vary — consult a professional for personalized advice.
BMR (Basal Metabolic Rate) — The calories your body burns at complete rest to maintain vital functions (breathing, heartbeat, temperature). Accounts for 60-75% of daily expenditure. Calculated using the Mifflin-St Jeor equation: Men = 10×weight(kg) + 6.25×height(cm) − 5×age + 5; Women = 10×weight(kg) + 6.25×height(cm) − 5×age − 161.
TDEE (Total Daily Energy Expenditure) — The sum of BMR, the thermic effect of food (~10% of intake), and physical activity. Calculated as BMR × activity factor (sedentary 1.2 → very active 1.9).
Calorie Deficit — When intake < expenditure. A cumulative deficit of ~7700kcal equals roughly 1kg of fat loss. Safe range: 300-500kcal/day.
Calorie Surplus — When intake > expenditure. A moderate surplus (200-400kcal/day) combined with strength training is the foundation for muscle growth.
How the BMR Calculator Works — Enter your gender, age, height, and weight, and the tool automatically applies the Mifflin-St Jeor formula to compute your BMR, then multiplies by your selected activity level to derive TDEE.
Calorie Calculator is a free online tool to track your daily calorie intake and calculate your metabolic metrics.
All data is stored locally in your browser — nothing is uploaded to any server.
This tool provides calorie tracking, BMR/TDEE calculation, vegan nutrition guidance, and fitness nutrition references inspired by world-class athletes.
All calculations are based on established scientific formulas (Mifflin-St Jeor for BMR, ACSM activity factors for TDEE). Food calorie data is sourced from standardized nutrition databases.
Your data privacy is our priority. Everything runs client-side. No accounts, no servers, no tracking.