Moderately active example
Result: 2662 kcal/day
This example gives a practical starting point for someone who wants to plan calories from a typical active-adult profile.
Fitness Calculators
Use this muscle gain calorie calculator to estimate total daily energy expenditure with a practical bodyweight-and-height model.
Calculator
Sample inputs
Formula explanation
Core formula
TDEE = BMR * activity multiplierBasal metabolic rate is estimated with the Mifflin-St Jeor equation, then scaled by your activity level to estimate total daily energy expenditure.
Examples
Result: 2662 kcal/day
This example gives a practical starting point for someone who wants to plan calories from a typical active-adult profile.
Result: 2327 kcal/day
The second example shows how the estimate changes when training volume and body profile shift together.
FAQ
This muscle gain calorie calculator estimates maintenance calories from the body, activity, or training inputs shown on the page.
The calculator applies the formula tied to this page and then highlights the fitness metric that searchers usually care about first, such as calories, protein, pace, or body composition.
Body size, age, activity level, and training assumptions usually matter most. If those assumptions drift from reality, the result is still directionally helpful but less precise.
No. These equations are best used as planning tools. They help you start with a defensible target, then adjust based on real performance, recovery, and body-composition feedback.
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