Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Meal Timing Calculator
Calculate the size of your largest meal of the day based on total daily calories, number of meals, workout timing, and weight goal. Use it for meal planning around training schedules and for ensuring consistent meal sizes throughout the day.
BMR / TDEE Calculator
Estimate your daily calorie needs using the revised Harris-Benedict equation, then adjust for activity to get your Total Daily Energy Expenditure (TDEE) — the rough number of calories you burn in 24 hours when you eat a maintenance diet. Enter your weight in kilograms, height in centimetres, age, biological sex, and an activity multiplier (sedentary 1.2, lightly active 1.375, moderately active 1.55, very active 1.725, extremely active 1.9). The result is what most nutrition guides call your "maintenance calories" — a starting point for designing a deficit (to lose weight), a surplus (to gain muscle), or a recomposition plan.
Key differences
| Meal Timing Calculator | BMR / TDEE Calculator | |
|---|---|---|
| Category | Nutrition | Health |
| Inputs required | 4 | 5 |
| Result | Largest Meal Size (calories) | Daily Calorie Needs (calories) |
| What it does | Calculate the size of your largest meal of the day based on total daily calories, number of meals, workout timing, and weight goal. Use it for meal planning around training schedules and for ensuring consistent meal sizes throughout the day. | Estimate your daily calorie needs using the revised Harris-Benedict equation, then adjust for activity to get your Total Daily Energy Expenditure (TDEE) — the rough number of calories you burn in 24 hours when you eat a maintenance diet. Enter your weight in kilograms, height in centimetres, age, biological sex, and an activity multiplier (sedentary 1.2, lightly active 1.375, moderately active 1.55, very active 1.725, extremely active 1.9). The result is what most nutrition guides call your "maintenance calories" — a starting point for designing a deficit (to lose weight), a surplus (to gain muscle), or a recomposition plan. |