Health & Fitness
Last updated: May 2026 · 13 tools in this category — no signup required
Health and fitness calculators based on WHO and ICMR (Indian Council of Medical Research) standards. Calculate BMI with Indian-specific categories, estimate daily calorie needs, track pregnancy milestones, compute BMR for weight management, and assess body fat percentage. Calibrated for Indian body types and dietary patterns.
All Health & Fitness (13 Tools)
BMR Calculator
Calculate Basal Metabolic Rate and daily calorie needs
Calorie Calculator
Calculate daily calorie intake for weight loss, gain or maintenance
Pregnancy Calculator
Calculate due date, conception date and pregnancy week from LMP
Water Intake Calculator
Calculate how much water you should drink daily based on weight and activity
Body Fat Calculator
Estimate body fat percentage using US Navy method
Blood Alcohol Calculator
Calculate BAC using Widmark formula with Indian legal limit (0.03%)
Heart Rate Zone Calculator
Calculate 5 heart rate training zones based on age and resting HR
Macro Calculator
Calculate daily macros (protein, carbs, fat) for different diets and goals
Ideal Weight Calculator
Calculate ideal body weight using Devine, Robinson, Miller & Hamwi formulas
Protein Intake Calculator
Calculate daily protein needs based on weight, activity and fitness goal
Sleep Calculator
Find optimal bedtime or wake time based on 90-minute sleep cycles
Blood Pressure Checker
Check blood pressure category: Normal, Elevated, Stage 1/2 Hypertension
Menstrual Cycle Calculator
Track menstrual cycle, fertile window, ovulation day with calendar view
What are Health & Fitness?
Health and fitness calculators on SabTools.in estimate body composition, daily calorie needs, macronutrient targets, pregnancy milestones, and fitness metrics using guidance from the World Health Organization, the Indian Council of Medical Research (ICMR), and peer-reviewed medical formulas — with India-specific reference values where they exist. Unlike generic health calculators that assume Western body types and diets, our tools use the WHO Asia-Pacific BMI classification (which sets overweight at 23+, not 25+, because South Asian body composition shows metabolic risk at lower BMI) and reference Indian food composition tables from the National Institute of Nutrition, Hyderabad. These are decision-support tools for informed conversations with your doctor, not replacements for clinical judgement.
Key Features & Capabilities
India-specific reference ranges
BMI uses the WHO Asia-Pacific classification (<18.5 underweight, 18.5-22.9 normal, 23-24.9 overweight, 25+ obese). BMR uses the Mifflin-St Jeor formula, which is more accurate for South Asian populations than the older Harris-Benedict equation.
ICMR-aligned calorie guidance
Daily calorie and macronutrient recommendations follow the 2020 ICMR-NIN Dietary Guidelines for Indians, which account for typical Indian vegetarian/non-vegetarian eating patterns and regional variations.
Pregnancy tracking to Indian standards
Pregnancy calculator computes gestational age, estimated due date, and trimester milestones using standard obstetric dating (LMP + 280 days) used by Indian hospitals.
Privacy-first processing
Height, weight, age, and health inputs stay on your device. Nothing is sent to any server — important because health data in India is covered by the Digital Personal Data Protection Act, 2023.
Common Use Cases
Checking BMI before starting a fitness programme
Enter height and weight, see BMI plus the specific WHO Asia-Pacific category. The tool flags the India-specific caveat that 23+ BMI is the South Asian overweight threshold (vs 25+ internationally), because abdominal fat accumulation in South Asians carries cardiovascular risk at lower BMI.
Calculating maintenance calories to start losing weight
The BMR Calculator + Activity Level multiplier gives total daily energy expenditure (TDEE). A 500-calorie deficit from TDEE typically produces half a kilo per week of fat loss. The tool shows the calorie count at various deficit levels so you can pick a sustainable pace.
Estimating due date during pregnancy
Enter the first day of your last period and the Pregnancy Calculator shows gestational age in weeks and days, the estimated due date, the current trimester, and upcoming milestone dates (first trimester scan, anomaly scan, glucose tolerance test).
Checking ideal body weight range
The Ideal Weight Calculator uses four different formulas (Devine, Robinson, Miller, Hamwi) because no single formula is perfect for every body type. Seeing the range across all four gives a more realistic target than a single number.
How to Choose the Right Tool
For body composition baseline: BMI first, then BMR for calorie planning. For weight management: Calorie Calculator with Activity Multiplier, plus the Macro Calculator for protein/carb/fat split. For pregnancy: the Pregnancy Calculator covers dates and milestones; the Pregnancy Weight Gain Tracker monitors recommended gain by trimester. For fitness tracking: Heart Rate Zone Calculator for cardio planning, Calorie Burn Calculator for workout logs. Every tool page also explains what the number actually means for your health, not just what it is.
Health & Fitness Built for India
Indian bodies have distinctive cardiometabolic patterns — lower muscle mass, higher visceral fat at lower BMI, higher insulin resistance at any given weight, and different nutritional baselines. Our calculators use the WHO Asia-Pacific BMI cut-offs specifically recommended for South Asian populations, the ICMR dietary recommendations that factor in typical Indian diet patterns (high carbohydrate, legume-based protein, ghee/oil preferences), and reference values calibrated for Indian women during pregnancy. If the underlying research has an India-specific variant, our tool uses it; if not, we use the closest WHO recommendation for South Asia.
Who Uses These Health & Fitness?
Health-conscious individuals tracking fitness goals, expecting parents monitoring pregnancy progress, doctors explaining health metrics to patients, and fitness enthusiasts planning nutrition.
Why Use Health & Fitness on SabTools.in?
Uses ICMR standards which differ from Western BMI categories for Indian body types. All health data stays on your device — complete privacy for sensitive personal information.
Popular Tools in This Category
- BMR Calculator — Calculate Basal Metabolic Rate and daily calorie needs
- Calorie Calculator — Calculate daily calorie intake for weight loss, gain or maintenance
- Pregnancy Calculator — Calculate due date, conception date and pregnancy week from LMP
- Water Intake Calculator — Calculate how much water you should drink daily based on weight and activity
- Body Fat Calculator — Estimate body fat percentage using US Navy method
- Blood Alcohol Calculator — Calculate BAC using Widmark formula with Indian legal limit (0.03%)
- Heart Rate Zone Calculator — Calculate 5 heart rate training zones based on age and resting HR
- Macro Calculator — Calculate daily macros (protein, carbs, fat) for different diets and goals
...and 5 more tools. Explore all 13 health & fitness above.
Frequently Asked Questions
My BMI says 'overweight' at 24 but I feel fine — is that wrong?
Is BMR the same as the calories I need to eat?
Can I use the pregnancy calculator if I do not know my exact LMP date?
Are these calculators a substitute for a doctor?
Are my health inputs stored anywhere?
Will these calculators give wrong results for South Asian body types?
Are pregnancy calculators safe to rely on for clinical dating?
Does the calorie counter work for vegetarian Indian meals specifically?
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