Question 1

Are these calculators medical advice?

Accepted Answer

No. They are for general education. Always speak to a qualified clinician about diet, sleep disorders or weight concerns.

Question 2

Which equation do you use for calories?

Accepted Answer

We use the Mifflin–St Jeor equation for BMR and standard activity multipliers to estimate TDEE, then subtract your chosen deficit.

Question 3

Why does sleep use 90 minutes?

Accepted Answer

Sleep cycles are often approximated as ~90 minutes. Waking between cycles may feel easier than waking from deep sleep.

Question 4

Can I use BMI for children?

Accepted Answer

This site’s BMI tool is intended for adults. Children need growth-chart percentiles assessed by a professional.

Health Calculators

Using health tools responsibly