# FitnessProGuide

> Free, science-backed fitness calculators and AI tools covering body composition, nutrition, strength, cardio, and wellness. Formulas are sourced from peer-reviewed research and recognized bodies (WHO, CDC, ACSM, ISSN). Nutrition and body-composition content is reviewed by Linda Murray, RNT (Registered Nutritional Therapist). All tools are free with no signup.

Important: Outputs are estimates for educational purposes and are not medical advice. Users should consult a qualified professional for medical or clinical decisions.

## Popular calculators
- [BMI Calculator](https://www.fitnessproguide.com/bmi-calculator/): Body Mass Index using the WHO standard.
- [TDEE Calculator](https://www.fitnessproguide.com/tdee-calculator/): Total Daily Energy Expenditure via Mifflin-St Jeor.
- [Calorie Calculator](https://www.fitnessproguide.com/calorie-calculator/): Daily calorie needs for any goal.
- [BMR Calculator](https://www.fitnessproguide.com/bmr-calculator/): Basal Metabolic Rate (Mifflin-St Jeor, Harris-Benedict).
- [Macro Calculator](https://www.fitnessproguide.com/macro-calculator/): Protein, carb, and fat targets.
- [Body Fat Calculator](https://www.fitnessproguide.com/body-fat-calculator/): US Navy and Jackson-Pollock methods.
- [Protein Calculator](https://www.fitnessproguide.com/protein-calculator/): Daily protein intake (ISSN guidance).
- [One Rep Max Calculator](https://www.fitnessproguide.com/one-rep-max-calculator/): 1RM via Epley and Brzycki.
- [Heart Rate Zone Calculator](https://www.fitnessproguide.com/heart-rate-calculator/): Training zones (220-age, Karvonen).
- [Calorie Deficit Calculator](https://www.fitnessproguide.com/calorie-deficit-calculator/): Safe fat-loss planning.

## AI tools
- [AI Workout Generator](https://www.fitnessproguide.com/ai-workout-generator/): Personalized training plans.
- [AI Meal Plan Generator](https://www.fitnessproguide.com/ai-meal-plan-generator/): Custom 7-day meal plans.
- [Supplement Stack Builder](https://www.fitnessproguide.com/supplement-stack-builder/): Goal-based supplement guidance.

## Guides
- [What Is TDEE](https://www.fitnessproguide.com/blog/what-is-tdee/): How TDEE works and why it matters.
- [How to Calculate Macros](https://www.fitnessproguide.com/blog/how-to-calculate-macros/): Step-by-step macro targets.
- [How to Create a Calorie Deficit](https://www.fitnessproguide.com/blog/how-to-create-calorie-deficit/): Sustainable fat loss.
- [Creatine Dosage Guide](https://www.fitnessproguide.com/blog/creatine-dosage-guide/): Loading and maintenance dosing.
- [Blog index](https://www.fitnessproguide.com/blog/): All evidence-based guides.

## Trust and E-E-A-T
- [About](https://www.fitnessproguide.com/about/): Mission and team.
- [Methodology](https://www.fitnessproguide.com/methodology/): Formula sources and scientific basis.
- [Editorial Policy](https://www.fitnessproguide.com/editorial-policy/): How content is reviewed for accuracy.
- [Medical Disclaimer](https://www.fitnessproguide.com/medical-disclaimer/): Scope and limitations.
- [Reviewer: Linda Murray, RNT](https://www.fitnessproguide.com/reviewer/linda-murray/): Registered Nutritional Therapist.
- [All tools directory](https://www.fitnessproguide.com/all-tools/): Full list of calculators and tools.