Clinical & Research Calculators
Free evidence-based tools for nutrition assessment, epidemiology, and global health research. All calculators use WHO and internationally validated reference data.
Anaemia Threshold Calculator - WHO Haemoglobin Cut-offs
Determine anaemia status and severity using WHO haemoglobin cut-offs. Covers children, adult men and women, pregnant women, and elderly populations.
HAZ Calculator - Height-for-Age Z-Score (Stunting)
Calculate height-for-age z-score (HAZ) for children 0–60 months using WHO Child Growth Standards. Identify stunting, severe stunting, and normal growth.
Household Dietary Diversity Score (HDDS) Calculator
Calculate the Household Dietary Diversity Score from 24-hour food recall data. Uses the 12-food-group HDDS framework validated for use in low-income settings.
MUAC Calculator - Mid-Upper Arm Circumference Screening
Calculate MUAC nutritional status for children 6–59 months using WHO cut-offs. Identify SAM, MAM, and normal status instantly.
MUST Score Calculator - Malnutrition Universal Screening Tool
Calculate the MUST (Malnutrition Universal Screening Tool) score to identify adults at risk of malnutrition in hospital, community, and outpatient settings.
Relative Risk Calculator with 95% Confidence Interval
Calculate Relative Risk (RR) and 95% confidence interval from a 2×2 contingency table. For cohort studies, RCTs, and intervention evaluations.
RUTF Dosage Calculator for SAM Treatment
Calculate Ready-to-Use Therapeutic Food (RUTF) daily and weekly dosage for children with Severe Acute Malnutrition based on WHO CMAM protocol and body weight.
Sample Size Calculator for Prevalence Studies
Calculate required sample size for cross-sectional prevalence studies using standard formulas. Includes design effect correction for cluster sampling.
WAZ Calculator - Weight-for-Age Z-Score (Underweight)
Calculate weight-for-age z-score (WAZ) to assess underweight status in children 0–60 months using WHO Child Growth Standards.
WHZ Calculator - Weight-for-Height Z-Score (Wasting)
Calculate weight-for-height z-score (WHZ) to assess acute malnutrition (wasting) in children 0–60 months using WHO Child Growth Standards.