How much energy does your body actually need?
The Harris-Benedict formula — the reference — in three questions. Your personal number, then what the guide actually does with it.
Your total energy expenditure
0 kcal / day
An indicative estimate based on the revised Harris-Benedict formula. It does not replace advice from a doctor or a dietitian, especially if you have a medical condition, are on treatment, or are pregnant.
$14.99
$19.99
Until October 31, 2026
Get the complete guide
Launch price until October 31, 2026, then $19.99. Tax excluded — your country's VAT or sales tax is added at checkout.
One-time paymentInstant downloadRefunded within 7 days