Disclaimer

Last updated: September 13, 2026

The calculators on RepMaths use established, published formulas and methods from strength training, exercise science, and sports nutrition research. See our Methods & Formulas page for more information.

All calculators and information on RepMaths are provided for informational and educational purposes only. They are not intended to replace professional medical, nutritional, or fitness advice, diagnosis, or treatment.

Estimates, Not Exact Measurements

Calculator results are estimates based on the information entered and the assumptions of the underlying formula or method. Individual results may vary, and different formulas can produce different estimates from the same inputs.

This applies to strength, training, nutrition, hydration, and body composition tools. Results such as estimated one-rep max, calorie needs, protein requirements, water intake, or body fat percentage should be treated as practical estimates rather than exact measurements.

Nutrition & Health

Nutrition and body-composition calculators provide general estimates intended primarily for healthy adults. Individual needs can differ substantially based on age, medical conditions, medications, pregnancy, breastfeeding, eating disorders, or other health circumstances.

Do not use RepMaths calculators as a substitute for individualized medical or nutritional guidance. If you have a medical condition, are pregnant or breastfeeding, take medication, or have concerns about your health or nutrition, consult an appropriately qualified healthcare professional.

Exercise & Training

Exercise and strength-training calculations are provided for informational purposes and do not account for every individual's training history, technique, fatigue, injury status, or physical limitations.

Use appropriate judgment when applying calculated training loads. Stop exercising if you experience unusual pain, dizziness, or other concerning symptoms, and seek appropriate professional advice when necessary.

Use at Your Own Risk

By using RepMaths, you acknowledge that its calculators and information have limitations and that you are responsible for how you use the results.

RepMaths is not responsible for injury, health problems, loss, or damage resulting from reliance on calculations or information provided on this site, to the extent permitted by applicable law.

If you are unsure whether a calculator or its result is appropriate for your situation, consult a qualified professional.