🔥 Calorie Calculator
Enter your details to estimate your BMR and daily calorie needs (TDEE), plus calorie targets for maintaining, losing, or gaining weight — informational only, not medical or nutrition advice.
🧮 Estimate Your Daily Calories
What is a Calorie Calculator?
It estimates how many calories your body burns in a day — your Total Daily Energy Expenditure (TDEE) — starting from your Basal Metabolic Rate (BMR) and scaling it up by how active you are, from sedentary days to intense daily training.
Use it as a starting point for planning meals around your training on and off the water, whether you're aiming to maintain your current weight, trim down, or build strength. Remember this is a general estimate — not medical or nutrition advice — and individual needs vary.
❓ Frequently Asked Questions
How does the calorie calculator work?
Enter your sex, age, height, weight, and activity level. It uses the Mifflin-St Jeor equation to estimate your Basal Metabolic Rate (BMR) — the calories your body burns at rest — then multiplies that by an activity factor to estimate your Total Daily Energy Expenditure (TDEE), the calories you burn in an average day.
What is TDEE and why does it matter?
TDEE (Total Daily Energy Expenditure) is your BMR scaled up for how active you are day to day, from sedentary to very active. It's a practical starting point for setting calorie targets: eating around your TDEE tends to maintain weight, eating below it tends to produce loss, and eating above it tends to produce gain.
What is BMR and how is it calculated here?
BMR (Basal Metabolic Rate) is the energy your body needs just to function at rest — breathing, circulation, cell repair. This calculator uses the Mifflin-St Jeor equation, one of the most widely validated formulas, which factors in your weight, height, age, and sex.
Is this medical or nutrition advice?
No. This tool gives a general, informational estimate based on a population-level formula — it isn't a substitute for personalised medical or nutrition advice. Individual energy needs vary with body composition, health conditions, and metabolism, so check with a doctor or dietitian before making significant changes to your diet.