Disclaimer

The calculators and quizzes on AthleteCalcs give estimates for training and planning. They are not medical, nutrition or coaching advice.

Estimates for planning

Every result on this site is an estimate based on the numbers you enter and on simplified formulas and default values. Real outcomes depend on your own situation, and defaults are examples, not quotes or promises. Please confirm anything important with the right professional, product label or official source before you act on it. Use of this site is at your own risk.

Training and injury

Lifting heavy, running hard and pushing your heart rate all carry risk. A calculator cannot see your technique, your injuries or your health history. Check with a coach, trainer or physician before starting a new program or testing a true maximum, use a spotter and safe equipment for heavy lifts, and stop if something hurts.

Max and percentage estimates

A predicted one-rep max comes from a lighter set and a formula. Your real maximum can be higher or lower, and the formulas disagree most at higher repetitions. Treat the number as a starting point for programming, not a target to attempt cold.

Heart rate and pace

A maximum heart rate estimated as 220 minus your age is a population average, and many people differ from it noticeably. Heart rate zones, pace predictions and calorie burn all vary with fitness, heat, hills, sleep and medication. If you have a heart condition or take medication that affects heart rate, ask your doctor which zones are right for you.

Military fitness tests

The military calculators use simplified scoring bands, not the official regulation tables, and they are not affiliated with or endorsed by any branch of the armed forces. Standards change and differ by age and sex. Check the current official standard from your service before you rely on a score.

Body composition and nutrition

BMI, body fat, calorie, macro and deficit estimates are rough tools. They do not diagnose anything and do not replace a doctor or registered dietitian. If you are pregnant, have a medical condition, take medication, are under 18 or have a history of disordered eating, talk to a qualified professional before changing how you eat or train.

No warranty

We work to keep AthleteCalcs accurate and up to date, but we make no warranty about accuracy, completeness or fitness for a particular purpose, and we are not responsible for decisions made using a result. If you find a mistake, please tell us through the Report an Issue form.

Links and advertising

This site links to other websites, including the sources we cite, and displays advertising served by Google AdSense. We do not control other sites or the ads shown, and we are not responsible for their content. Advertising never changes a result.

Changes

We may update the tools and this page as the sources change. Questions about this page can go through the contact page.