Calculator category

Fitness Calculators

Free fitness calculators for calories, macros, protein, hydration, cardio, strength and body composition.

Calories

TDEE Calculator

Estimate maintenance calories, fat loss calories, lean gain calories and basic macros.

Nutrition

Protein Calculator

Calculate a practical daily protein target based on body weight and goal.

Nutrition

Macro Calculator

Split calories into protein, carbs and fats for a chosen fitness goal.

Hydration

Water Intake Calculator

Estimate daily hydration needs based on weight, exercise and climate.

Cardio

Heart Rate Zones Calculator

Estimate cardio training zones using age and resting heart rate.

Strength

1RM Calculator

Estimate one-rep max and training loads from working weight and reps.

Health

BMI Calculator

Calculate body mass index and understand the general category.

Health

Body Fat Calculator

Estimate body fat percentage using simple tape measurements.

Running

Running Pace Calculator

Calculate pace, speed and estimated finish time for running or walking.

Training

Calories Burned Calculator

Estimate calories burned from activity, body weight and workout duration.

Popular searches covered

This category is structured around real calculator search intent: quick answers, mobile usability and clear result outputs.

Training or gym-focused? Layna Activewear is linked subtly from relevant fitness tools only — the tools stay utility-first.