Frequently Asked Questions

Answers to common questions about our 10 free fitness and nutrition calculators — from 1RM formulas and TDEE science to hydration myths and body fat measurement.

Important Medical Disclaimer

This tool is for informational and educational purposes only. Not intended as medical advice, diagnosis, or treatment. Always consult a licensed healthcare professional before making changes to your diet, hydration, or health routine.

Individual hydration needs vary based on medical conditions, medications, and personal health factors. If you have kidney disease, heart conditions, or other medical issues, consult your doctor.

Strength & Lifting Calculators

Nutrition & Diet Calculators

Body Composition

Hydration & Water Intake

General & Site Questions