Are these calculators really free, no signup?

Yes — every number is calculated instantly in your browser, no account, no payment, no app download. On each calculator you can optionally leave an email to get a welcome mail explaining what the Coach Bhai app does, plus a free 7-day Pro trial. No report is sent, and the calculator result itself is always free.

Which calculator should I check first?

Start with BMI if you just want a quick screening number — it only needs height and weight. For a fuller picture, follow it with the Body Fat % and Waist-Hip Ratio calculators, which show composition and risk that BMI alone misses.

Do these use Indian or Western standards?

Indian-first. BMI, body fat, and waist-hip results lead with the Asian-Indian cut-offs (BMI overweight ≥23, obese ≥25; waist risk at 90cm men/80cm women) from the Indian Consensus Group and WHO Asia-Pacific guidance, with the global WHO standard shown alongside for comparison.

Is my data stored or sent anywhere?

No. Height, weight, waist, hip and neck measurements are calculated entirely in your browser and never sent to our servers. Only an email address (if you choose to enter one for the free 7-day Pro trial) is stored, with consent.

How is this different from a Google search result calculator?

Generic search-box calculators use one-size-fits-all Western cut-offs and give a number with zero context. Ours explains what the number means for an Indian body specifically, what it misses, and links straight to India-specific food and workout guidance to act on it.

Can I use these calculators for my kids?

No — all five calculators are built for adults (18+). Children and teens need age- and growth-adjusted charts (like WHO/IAP growth curves), which these tools don't calculate. Ask a pediatrician instead.

Free Health Calculators: BMI, TDEE & Body Fat

Bhai, seedha kaam ki baat — yeh page 5 free calculators ka ghar hai, aur har ek Indian body ke hisaab se banaya hai, na ki kisi US ya UK app se copy-paste kiya hua. Global calculators ek hi cut-off pura duniya pe thop dete hain. Hum nahi karte, kyunki Indians ka body composition alag hai — same height-weight pe, ek average Indian ka body fat % aksar ek average Caucasian se zyada hota hai. Yeh koi opinion nahi, yeh ICMR-NIN aur Indian Consensus Group ki research hai.

Why these calculators are different from every global one

Har global BMI ya calorie calculator WHO ke general cut-offs use karta hai — jo mainly Western population data pe based hain. Lekin South Asians (yaani hum) same BMI pe zyada visceral fat (pet ke andar wali chaabi wali fat) carry karte hain — isko "thin-fat Indian" phenotype bhi kaha jaata hai. Matlab ek 24-BMI wala Indian, jo "normal" lagta hai global chart pe, actually already risk zone mein ho sakta hai Indian cut-off ke hisaab se (23+). Isliye har calculator yahan Asian-Indian cut-off ko lead karta hai, WHO wala side mein dikhata hai — dono dikhte hain, par jo matter karta hai India mein woh pehle aata hai.

Which calculator should I use first?

Agar sirf ek number chahiye jaldi se, BMI se shuru karo — sabse fast, sirf height-weight chahiye. Lekin BMI akela poori kahani nahi batata (neeche padhoge kyun) — agar tape available hai toh Body Fat % Calculator zyada real picture deta hai, kyunki woh actual fat vs muscle measure karta hai, na ki sirf weight. Agar goal weight loss/gain hai aur "kitna khaana hai roz" janna hai, TDEE/Calorie Calculator use karo — woh tera maintenance calories batayega, jahan se deficit/surplus plan banta hai. Height ke hisaab se "sahi weight kya hai" jaanna hai toh Ideal Weight Calculator. Aur agar belly fat/heart risk ki tension hai, Waist-Hip Ratio Calculator sabse important signal deta hai — kayi doctors isko BMI se zyada trust karte hain metabolic risk ke liye.

How accurate are these calculators?

Koi bhi calculator — chahe hum banayein ya koi hospital — ek estimate deta hai, DEXA scan ya blood test jaisi precision nahi. BMI sirf height-weight ka ratio hai, muscle aur fat mein farak nahi karta. Navy body-fat method tape se measure karta hai, ±3-4% ka margin hota hai but caliper ya scale se zyada consistent hai ghar pe. TDEE ek formula (Mifflin-St Jeor) se calculate hota hai jo activity level pe depend karta hai — real number hafte 2 track karne ke baad hi pata chalega. In sab ko screening tools samjho, diagnosis nahi. Agar koi number chinta wala aaye, doctor se baat karo — yeh app usko replace nahi karta.

What each number actually helps you decide

Yeh paanch calculators alag-alag sawaal ka jawab dete hain, aur milke ek poori picture banate hain. BMI batata hai quick screening — risk zone hai ya nahi. Body fat % batata hai composition — fat kitna, muscle kitna, "skinny fat" hai ya nahi. TDEE batata hai action number — roz kitna khaana hai target ke hisaab se. Ideal weight batata hai destination — kis range mein pahunchna hai. Waist-hip ratio batata hai sabse important health-risk signal — belly fat kitna dangerous hai. Koi ek akela poori kahani nahi batata; do-teen milake use karna sabse smart tarika hai apni body samajhne ka.

Where these numbers come from

Yeh calculators wahi math use karte hain jo Coach Bhai app ke andar production mein chalta hai — same engine, same Asian-Indian cut-offs, same formulas (Navy body-fat method, Mifflin-St Jeor for TDEE, WHO waist-hip risk bands). Hum alag se "web version" nahi bana rahe jo app se different result de — same sawaal, same jawab, chahe tu app use kare ya sirf yeh page.

Sab kuch free hai, sab kuch turant result deta hai, aur koi measurement kabhi humare server pe nahi jaata — poora calculation tere phone/browser mein hi hota hai. Sirf agar tu apna email dekar free 7-din ka Pro trial chalu karta hai, tab email + consent store hota hai (measurements kabhi nahi). Us email mein bas welcome mail aata hai jo batata hai app kya karta hai — koi report nahi, koi spam nahi. Sab DPDP Act 2023 ke hisaab se, explicit consent ke saath, unsubscribe kabhi bhi available.

Free Health & Fitness Calculators — Built for Indian Bodies

BMI Calculator (Indian Standard)

Body Fat % Calculator

Calorie / TDEE Calculator

Ideal Weight Calculator

Waist-Hip Ratio Calculator