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Calcimator

Baby Weight Percentile Calculator

Track your baby's weight against WHO growth charts. See their percentile ranking for age and sex.

Inputs

months

Results

Weight Percentile

33.1%

ClassificationNormal
Weight (kg)7.5 kg
Weight (lbs)16.5 lbs
Median for Age (kg)7.9 kg

Weight Percentile

33.1%

How to Use This Calculator
  1. Start by filling in the input fields below. Results update instantly as you type, so you can experiment with different values to see how they affect the outcome.
  2. Baby's Age — Age in months. Accepts values from 0 months to 36 months (default: 6 months).
  3. Weight — Body weight in the selected unit. Accepts values from 1 to 50 (default: 16.5).
  4. Unit — Measurement system to use. Choose from: Pounds (lbs), Kilograms (kg). default: 0.
  5. Sex — Biological sex for calculation accuracy. Choose from: Boy, Girl. default: 0.
  6. Once all inputs are set, review your results in the Results panel. Here's what each output means:
  7. Weight Percentile — shown as a numeric value. This is the primary result of this calculator.
  8. Classification — your calculated result.
  9. Weight (kg) — shown as a numeric value.
  10. Weight (lbs) — shown as a numeric value.
  11. Median for Age (kg) — shown as a numeric value.
  12. View the Weight Comparison below for a visual breakdown of how the numbers relate to each other.
  13. Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
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