Low Birth Weight and Preterm Categories (WHO 2022)
Gives the WHO low-birth-weight and preterm categories for a birth weight and gestational age.
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Birth weight in grams
- 2200
- Gestational age at birth, completed weeks
- 35
Result: 2,200 g: low birth weight (below 2,500 g); preterm (before 37+0 weeks).
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Birth weight in grams
- Gestational age at birth, completed weeks
- Plus days (0-6)
How this is calculated
Citation
World Health Organization. WHO recommendations for care of the preterm or low-birth-weight infant. Geneva: WHO; 2022. Glossary; recommendations A.1a and A.1b. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.