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How the Free Tools Work

Every calculator on coachluke.com follows the same rules: it’s free, it takes about a minute, your results appear instantly on the page, and you never need to hand over your email address to see them.

Where to find the tools #

The full collection lives on the Free Tools hub. Here’s what’s available:

Planning calculators

Measurement calculators

Quizzes and self-checks

Are the tools only for women? #

No. The site is written for women 25 and up, so the explanations and default settings lean that way, but the math works for anyone. Every calculator that needs it has a Male/Female option, and picking Male switches the formula (calorie and macro math, body fat, heart rate zones, ideal weight, fiber, creatine and fitness age norms). The two exceptions are the Perimenopause Check and the BMI Calculator for Women, which are built specifically around female physiology.

Do I need an account or email address? #

Not for the calculators or the quizzes listed above. Results display instantly on the page and no sign-up is required.

The 60-second checks at coachluke.com/check/, the Weight Loss Quiz and the Supplement Match Quiz are different: they ask for your email before showing your result, and send you a free guide too. See How the 60-Second Checks Work.

Are the results medical advice? #

No. Every tool is an educational self-check built by a NASM-certified fitness and nutrition coach, not a diagnostic instrument. If a result raises a health concern, take it to your doctor.

A tool isn’t loading. What should I do? #

Refresh the page first. If it still won’t load, try a different browser or turn off content-blocking extensions for this site, since aggressive blockers occasionally stop the calculators from running. Still stuck? Send me a note through the contact page and tell me which tool and browser you’re using.