Free calculators
Five free calculators that run entirely in your browser: ideal weight range, daily protein needs, water intake, dry to cooked portion conversion and intermittent fasting windows. Each one shows the formula it uses so you can check the result yourself.
Estimate ideal body weight from height with the Devine and Robinson formulas and compare it with the healthy weight range derived from body mass index.
Work out your daily protein in grams from body weight, activity level and goal, with the recommended split per meal.
Work out daily water needs from body weight, exercise and climate, including the share that comes from food and the number of glasses.
Turn the number of adults and children into the quantities to buy and cook for pasta, protein, vegetables and bread.
Set your last meal time and the protocol to see when the eating window reopens and how to spread meals inside it.
dietai è uno strumento organizzativo ed educativo. Non elabora piani alimentari personalizzati, non gestisce patologie, gravidanza, allattamento, allergie o intolleranze diagnosticate e non sostituisce la valutazione di un dietista, di un nutrizionista o di un medico.
© 2026 be lead di Gianluca Benvegnù · P.IVA 12310430967 · REA MI-2652994 · Milano
Un progetto be lead · studio di AI applicata, Milano · beleadcreativestudio@proton.me