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Free health tools

Health calculators for everyday decisions

Find your calorie needs, understand body measurements and explore health risks. All 64 tools are free.

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  • 64 free calculators
  • 11 health categories
  • Methods clearly labelled
Not sure where to start? Choose a goal

Overview

Start with the full picture

1 tool

Body measurements

Understand your body measurements

5 tools
Body measurement BMI Calculator See your BMI with Asian and WHO reference ranges. Calculate now 1 min US Navy estimate Body Fat Percentage Calculator Estimate body fat from neck, waist and hip measurements. Calculate now 2 min WHO reference Waist-to-Hip Ratio Compare waist and hip measurements using WHO risk ranges. Calculate now 1 min Body measurement Waist-to-Height Ratio Compare your waist with your height to screen metabolic risk. Calculate now 1 min Combined check Body Composition, Waist and BP Check Bring body fat, waist, calf and blood pressure into one report. Calculate now 3 min

Energy and weight goals

Plan calories and hydration

5 tools

Food and nutrients

Plan what goes on your plate

4 tools

Want a full 7-day Indian meal plan? Chat with DietXP Intelligence in the Smart Indian Diet Planner, or fill in one form with the classic Diet Plan Calculator.

Heart and blood sugar

Screen common metabolic risks

5 tools

Fitness and sport

Train, fuel and recover

8 tools

Women's health

Life stages, hormones and nutrition

21 tools
Cycle estimate Menstrual Cycle and Period Tracker Estimate cycle phases and likely period dates. Calculate now 2 min Fertile-window estimate Ovulation and Fertile Window Calculator Estimate your fertile window for conception planning. Calculate now 2 min Nutrition estimate Pre-Conception Nutrition Plan key nutrients before pregnancy and in early pregnancy. Calculate now 4 min Nutrition estimate PCOS Nutrition and Calorie Calculator Estimate calories and macros with practical low-GI meal ideas. Calculate now 5 min Life-stage estimate Hormonal Nutrition Calculator Set nutrition targets for menopause, perimenopause or PCOS. Calculate now 5 min Phase-based planner Cycle Nutrition Planner See food ideas for each phase of the menstrual cycle. Calculate now 4 min Due-date estimate Pregnancy Due Date Calculator Estimate due date, gestational week and trimester. Calculate now 2 min IOM reference Pregnancy Weight Gain Calculator Review trimester weight-gain ranges based on pre-pregnancy BMI. Calculate now 3 min Life-stage estimate Pregnancy Nutrition Calculator Estimate trimester-specific energy and nutrient needs. Calculate now 4 min ICMR-NIN reference Iron Requirement for Indian Women Estimate iron needs across menstruation, pregnancy and lactation. Calculate now 3 min Life-stage estimate Calcium and Vitamin D Requirement Estimate calcium and vitamin D needs by life stage. Calculate now 3 min IADPSG screen Gestational Diabetes Risk Screen common gestational diabetes risk factors. Calculate now 4 min Lactation estimate Breastfeeding Calorie Calculator Estimate energy and nutrient needs during lactation. Calculate now 3 min Recovery estimate Postpartum Nutrition Calculator Plan recovery nutrition after delivery by feeding mode. Calculate now 4 min Nutrition support Thyroid Nutrition Calculator Review iodine, selenium, meal timing and thyroid-related needs. Calculate now 5 min Symptom-based planner Menopause Nutrition Planner Match food guidance to common menopause symptoms. Calculate now 5 min Body measurement Post-Menopause Body Composition Check Review BMI, waist and body-composition risk after menopause. Calculate now 4 min FRAX model Osteoporosis Risk Calculator Estimate fracture risk with the FRAX framework. Calculate now 5 min Risk screen Women's Metabolic Syndrome Risk Review metabolic risk factors with women-specific context. Calculate now 4 min Snehita BRISK Breast Cancer Risk Calculator Estimate relative risk with an Indian-validated screening model. Calculate now 5 min HOMA-IR estimate Insulin Resistance Score Calculator Estimate insulin resistance from fasting glucose and insulin. Calculate now 4 min

Clinical tools

Assessment support for informed care

These tools are intended for informed discussion and supervised use. They do not replace clinical judgement.

7 tools

Liver health

Liver scores and risk indices

3 tools

Kidney health

Kidney function and nutrition

3 tools

Healthy ageing

Lifestyle and healthspan

2 tools

About the directory

Clear tools, with the method shown

DietXP brings 64 free health and nutrition calculators into one directory. Nutrition targets use Indian references when relevant. Named clinical tools keep their published scoring methods, including Framingham, FINDRISC, MELD-Na, CKD-EPI and PHQ-9.

Calculator results are estimates or screening aids. They can help you prepare for a conversation with a doctor or registered dietitian, but they do not diagnose a condition or replace professional care.

Are DietXP health calculators free?
Yes. All 64 calculators on this page are free to use.
Are the calculators designed for Indian users?
Indian nutrition references, foods and population-specific cut-offs are used where relevant. Named clinical scores retain their own published methods.
Do I need to create an account?
Most calculators can be used without an account. A tool will say clearly if saving progress needs sign-in.
Can these calculators replace medical advice?
No. They provide estimates and screening support. Speak with a doctor or registered dietitian for diagnosis, treatment and individual advice.
How should I choose a calculator?
Search by a concern such as thyroid, blood sugar or protein, choose a category, or use the goal links beside the directory.

Health and nutrition information on this page is for general education. Seek professional care if you have symptoms, a diagnosed condition, take medication, are pregnant or need clinical treatment.