Daily Calorie Calculator

Based on your personal stats and activity level,
using the Mifflin-St Jeor equation.

yrs
kg
cm
Please fill in all fields before calculating.
Your daily calorie goal
—
calories per day
BMR
—
Basal Metabolic Rate
Activity multiplier
—
Based on your exercise level

This is your estimated daily calorie requirement for weight maintenance. These figures are a guide based on population averages and should be used alongside personalised nutritional therapy advice. Individual needs may vary.

Step 2 — Calorie goal and macros

First, select your calorie goal. Then set your protein target. Fat stays fixed at 1g per kg. Carbohydrates adjust automatically.

Adjusted daily calorie target
—

Higher protein reduces carbohydrates. Lower protein increases them. Fat remains at 1g per kg throughout.

Protein multiplier
2.0 g per kg
1.01.21.41.61.8 2.02.22.42.6
Protein
—
grams
—
Carbs
—
grams
—
Fat
—
grams
—
Calorie split —
Protein
Carbs
Fat

Fat is fixed at 1g per kg of body weight. Protein and carbohydrate targets adjust based on your multiplier. These are daily targets to be distributed across meals. Individual requirements may vary.

Step 3 — Meal by meal breakdown

Your daily macro target split across four meals: breakfast 25%, lunch 30%, snack 15%, dinner 30%.

🌅 Breakfast —
Protein
—
Carbs
—
Fat
—
☀️ Lunch —
Protein
—
Carbs
—
Fat
—
🫐 Snack —
Protein
—
Carbs
—
Fat
—
🌙 Dinner —
Protein
—
Carbs
—
Fat
—
Daily total —
Protein
—
Carbs
—
Fat
—

These figures are a guide. Meal splits can be adjusted based on training schedule, appetite, and individual preference. Consult your nutritional therapist for personalised guidance.

Step 4 — Daily hydration target

Based on your body weight and activity level, using 35ml per kg as the baseline with an upward adjustment for higher activity.

—
litres of water per day
Base requirement
—
35ml × body weight
Activity adjustment
—
Additional for exercise
Total daily target
—
In millilitres
Approx. glasses
—
Based on 250ml glass
Hydration guidance
  • Spread your intake evenly across the day rather than drinking large amounts at once.
  • Increase intake on training days, in hot weather, or if you consume caffeine or alcohol.
  • Urine colour is a useful indicator — pale straw yellow is the target.
  • Herbal teas and water-rich foods count toward your daily total.
  • If you experience headaches, fatigue, or poor concentration, check your hydration first.

These figures are a general guide. Individual hydration needs vary based on health conditions, medications, climate, and other factors. Consult your nutritional therapist for personalised advice.