BMI, calorie, body fat, and wellness calculators
28 tools available
Calculate your Body Mass Index instantly with a visual gauge. Supports metric and imperial units.
How many days per year do you lose to distraction? See the real cost of notifications, phone checks, and context switching — in hours, money, and missed opportunities.
Calculate your commute's CO₂ emissions, cost, and calories burned. Compare 10+ transport modes across 10 countries.
Calculate the carbon footprint of your online shopping, fashion, electronics, food delivery, and streaming habits.
Calculate daily calorie needs based on age, gender, weight, height, and activity level. Includes macro breakdown.
Calculate body fat percentage with the US Navy method. Free body fat calculator with visual guides, animated diagram, and category breakdown.
Calculate BMR, TDEE, and macronutrient split with a visual donut chart. Includes per-meal breakdown and protein guide.
Calculate your personal CO₂ emissions from transport, energy, diet, and lifestyle. See your impact and get personalized tips to reduce it.
Calculate your daily water footprint from showers, toilets, food, and leaks. See real-time impact with an animated water tank, human cost comparisons, and personalized savings tips.
Calculate the CO₂ footprint of your digital life — streaming, social media, emails, video calls, gaming, and cloud storage. See viral equivalences and personalized reduction tips.
Head-to-head health comparison. You vs friend, past-you, or Bryan Johnson. Get a viral roast + clear winner across 8 health categories.
Your body age isn't your birthday age. Take the 3-minute test based on Blue Zones and PhenoAge research. See your organ ages, life expectancy, and top 3 fixes.
See how your daily calorie surplus transforms your body over 1, 5, 10, and 20 years. Uses NIH-style dynamic model with metabolic adaptation.
Rate your diet 0-100 using HEI-2020 + Mediterranean standards. See life expectancy impact, disease risk reduction, and your top 3 quick wins.
Track your daily sodium intake and see the real health impact — BP rise, organs at risk, and stroke/heart disease projections.
See what your daily sugar is really doing to you. Tap foods, watch sugar cubes stack up, see which organs are affected, and get smart swap suggestions.
See exactly how junk food damages your body. Calculate weight gain, trans fat burden, organ impact, and money wasted.
Compare biological aging between friends. Sleep, stress, diet, smoking — see whose body is aging fastest.
How much sleep are you really missing? See the damage to your body, brain, productivity, and life expectancy.
The ultimate daily diet damage report. See combined impact of sugar, alcohol, junk food, salt, and water on your body.
How much of your life will you spend on screens? See years lost, books unread, and the real cost of scrolling.
See what every sip is worth. Drag the water level and watch your body age, dull, or bloom in real time.
See how much life, money, and tar is in your ashtray. Drag the sliders and watch the tar jar fill in real time.
See how your diet is aging you. A live portrait morphs per keystroke — skin dullness, under-eye, jawline — as you drag sugar, junk, and alcohol sliders.
See how many cigarettes-equivalent you smoke just by breathing your city's air. Live AQI + routine + mask toggle that clears your lungs in one tap.
How much of your life is the glass taking? Challenge a friend with one link and see whose scroll costs more years.
Calculate your pregnancy due date, see a trimester timeline, baby size comparisons, and key milestone dates.
Calculate Body Surface Area using Mosteller, Du Bois, Haycock, Gehan & George, and Boyd formulas — used in chemotherapy dosing, cardiac index, and burn assessment.