Sleep
Sleep calculator
Pick the time you have to be up, and get bedtimes that let full sleep cycles finish instead of cutting one in half.
Sleep · Food and water · Desk and screens
Everyday health in numbers you can actually use.
Calculators and plain-language guides for sleep, food, water and your desk — every number shown with the method behind it, what it cannot tell you, and what to do next.
Calculators
Food and weight
Daily calorie calculator
Your resting burn from the Mifflin-St Jeor equation, then your daily total once activity is added — with both numbers spelled out.
Food and weight
Water intake calculator
An estimate of your total daily water, how much of it comes from food, and why the eight-glasses rule was never a rule.
Screens and desk
Desk setup calculator
Your height turned into seat, desk, standing-desk and monitor heights in centimetres, and the posture each one is aiming for.
Browse by section
Section
Sleep tools
Work out when to go to bed, when to get up and when to stop drinking coffee — with the reasoning shown, not just a time.
Section
Food and weight tools
Calories and water worked out from your own numbers, with the equation behind them and what it cannot know about you.
Section
Screens and desk
Desk, chair and monitor heights derived from your height, plus the posture each number is aiming for.