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Infant & Toddler Growth Assessment (Reference Guidelines)

Free tool to assess body type from height and weight of infants and toddlers aged 0-5 years. Reference guidelines based on WHO growth standards to support your child's health management.

months

Enter 0-60 months

cm

Measured lying down

kg

How to Use

  1. STEP 1
    Select your child's gender
  2. STEP 2
    Enter your child's age in months (0-60 months)
  3. STEP 3
    Enter height in cm (measured lying down for infants)
  4. STEP 4
    Enter weight in kg (decimals allowed)
  5. STEP 5
    Click the 'Assess' button
  6. STEP 6
    Review the body type assessment, growth level, and standard weight range results
  7. STEP 7
    Use the 'Clear' button to reset input fields if needed
  • This assessment is for infants and toddlers aged 0-5 years (0-60 months)
  • For children 6 years and older, please use the school-age body assessment tool
  • Assessment results are reference guidelines only, not medical diagnosis or official growth evaluation
  • For accurate growth assessment, regular pediatric checkups and consultations are essential
  • Growth rates vary significantly in infancy, requiring continuous observation
  • Enter height measured lying down (different from standing measurement)

Tips

1

0–1 year is the rapid growth phase: weight ≈3×, length ≈1.5×. Focus on the overall curve, not isolated points.

2

Consistency boosts accuracy: morning measurement, same scale, similar clothing (or diaper only).

3

Height can read 1–2 cm shorter late in the day. Measure height in the morning; weight before breakfast.

4

Brief slower weight gain often matches new mobility (rolling, crawling, pulling to stand).

5

Deep sleep (~90 min after sleep onset) is a growth hormone peak. Reduce strong light before bed.

6

Early weaning: aim for familiarity, not volume. Touching, licking, smelling counts as healthy progress.

7

Preterm infants: use corrected age (from due date) until about age 2; differences usually narrow after that.

8

Small daily fluctuations are normal—watch for sustained downward trends. Monthly logs reduce anxiety.

9

Motor milestones (roll → crawl → stand) raise energy use; appetite waves may shift temporarily.

10

Add a brief note (condition / sleep / appetite) to each record to explain changes later.

FAQ

  • QUESTION 1

    What are the WHO Growth Standards?

    International growth references created by WHO from data of healthy infants worldwide. They use weight‑for‑height (and other indices) to judge appropriate weight for a given height. This tool presents 5 easy-to-read growth levels (Very Small, Small, Average, Large, Very Large).

  • QUESTION 2

    Why evaluate separately by gender?

    Growth patterns differ slightly between boys and girls (average weight and height velocity). Using sex‑specific reference data yields a more accurate assessment.

  • QUESTION 3

    What characterizes infant growth?

    Year 1 is the most dramatic: weight triples and length increases ~1.5×. After that the rate slows and a steadier pattern usually appears around age 2.

  • QUESTION 4

    What if the result shows ‘Monitor’ or ‘Consult Doctor’?

    First recheck measurement accuracy. Temporary fluctuations happen. If values stay outside the standard range over multiple measurements, consult a pediatrician or public health nurse.

  • QUESTION 5

    How to measure height correctly?

    Under 2 yrs: measure lying down head‑to‑heel (length board ideal). 2 yrs and up: standing measurement. At home measure against a wall in the morning (evening values can be 1–2 cm shorter).

  • QUESTION 6

    Tips for accurate weight measurement?

    Same time each day (before breakfast ideal), same clothing (naked or diaper only), reliable digital scale with 0.1 kg resolution.

  • QUESTION 7

    Which factors influence growth?

    Genetics (parental height/weight), nutrition, sleep quality/quantity, physical activity, illness. During infancy, adequate nutrition and quality sleep are especially critical.

  • QUESTION 8

    Why are regular checkups important?

    Scheduled pediatric visits (e.g., 2, 4, 6, 9, 12, 15, 18, 24 months, then yearly) enable continuous monitoring, developmental screening, and early detection—more informative than a single measurement.

  • QUESTION 9

    How are preterm infants assessed?

    Use corrected age (from due date) rather than chronological age, typically until about age 2, then switch to chronological age once differences narrow.

  • QUESTION 10

    How does this tool calculate results?

    It estimates an expected weight for the entered height using simplified WHO weight‑for‑height reference data and compares the actual weight to categorize growth level. It is a reference aid, not a medical diagnosis.

  • QUESTION 11

    How can I record a growth curve myself?

    Measure under consistent conditions monthly and log values. Plotting in a baby journal or app makes trend changes easier to see.

  • QUESTION 12

    Breast milk or formula—does one grow better?

    Breast milk is ideal, but modern formulas are nutritionally adequate. The key is balanced nutrition and appropriate amounts over time—not forcing volume.

  • QUESTION 13

    When to start complementary (weaning) foods?

    Generally around 5–6 months when the baby can hold the head steady and sit with support. Starting too early can stress the digestive system.

  • QUESTION 14

    Is frequent night waking related to growth spurts?

    Yes, night waking often increases during growth spurt periods (around 2–3 weeks, 6 weeks, 3 months, 6 months). It is usually temporary and settles within a few days.

  • QUESTION 15

    Does tooth eruption timing reflect growth?

    First teeth usually appear around 6–8 months but vary widely and aren’t a direct indicator of overall growth. Appetite may dip temporarily during eruption.

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