Western health formulas were built on Western bodies. Indians develop metabolic disease at lower BMIs, smaller waists, and lower body fat than Europeans. These calculators apply the right thresholds for South Asian metabolism — with the standard global versions available as a toggle.
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Calculate costBody Mass Index with the cutoffs that actually matter for South Asian bodies. The ICMR uses lower thresholds than the WHO because Indians develop diabetes and heart disease at lower weights. Toggle between Indian and WHO standards.
Calculate BMIHow many calories your body burns at complete rest. Uses the Mifflin-St Jeor formula with an optional South Asian adjustment — published research shows Indians have 5-11% lower BMR than Caucasians at matched height and weight.
Calculate BMRYour total daily calorie burn plus a goal-aligned daily macro split. Built around real weight and height — not estimated from waist measurements like some platforms do. Choose lose / maintain / gain to get protein, carbs, fats and fibre in grams.
Calculate TDEEFor Indian bodies, WHtR is often a better predictor of metabolic risk than BMI. It catches the visceral fat that BMI misses — the kind that sits around your liver and drives insulin resistance, fatty liver, and heart disease. The shorthand: keep your waist under half your height.
Calculate WHtRMost health calculators on the internet apply Western formulas to Indian bodies and call it a day. That's not careful, and for metabolic health it's not even accurate. Here's how Kaivo's calculators are built differently.
BMI, BMR, and WHtR all behave differently in South Asian bodies. ICMR, Diabetes India, and the 2025 revised Indian obesity guidelines publish stricter cutoffs that better predict metabolic risk. Our calculators apply them by default — the standard global versions are a one-click toggle.
We ask for your actual weight and height. Some platforms estimate them from waist circumference using made-up linear formulas — height and waist are anatomically independent in adults, so those estimates aren't meaningful. Real inputs give real outputs.
Every formula and threshold has a source. Mifflin-St Jeor (1990) for BMR. Wouters-Adriaens & Westerterp (2008) for the South Asian BMR correction. Ashwell & Hsieh (2005) for WHtR. ICMR-INDIAB (Anjana et al., 2023) for the Indian BMI cutoffs. AIIMS-trained doctors review every page.
If you're using these calculators to plan around weight or metabolic health, run them in this order:
For Indian adults, waist-to-height ratio is the single most useful number. It captures visceral fat — the metabolically dangerous kind — in a way BMI cannot. If your WHtR is healthy, your metabolic risk is likely low regardless of BMI. If it's elevated, the rest of the workup matters more.
Use BMI with Indian (ICMR) cutoffs to classify your overall weight status. BMI is a screening tool, not a diagnosis — but in combination with WHtR, it's a fast read on whether your weight needs attention.
If you're planning to change your weight, run BMR first to understand your baseline metabolism, then TDEE & Macros to get a real-world calorie target and macro split. The Indian-adjusted toggle on both is important — using Western defaults will overestimate your calorie needs.
None of these numbers is a diagnosis. They're a starting point. Combined with labs (HbA1c, lipids, liver, thyroid), they tell you whether to act — and how aggressively.
If your numbers flag elevated risk — or if you're already on lifestyle change and not seeing results — the next step is a full metabolic workup. Kaivo's 35-marker panel covers the markers that matter, and an AIIMS-trained doctor reviews the picture before any prescription is written.
If your calculator results flag elevated risk — or if you've been trying to lose weight and the numbers won't move — the next step is a real medical conversation. Take Kaivo's 2-minute eligibility test. AIIMS-trained doctors. No bots, no upsell, no judgment.
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