CalKit

Baby Shoe Size Calculator

Find baby shoe size.

mm
한국 사이즈
180mm

여유분 포함 추천: 185mm (성장 여유 8mm)

사이즈 변환표

발 길이120mm
한국 (KR)180mm
유럽 (EU)20
미국 (US)5
성장 여유 추천+8mm

Overview

Convert your baby's foot length (cm) to Korean (mm), US, European (EU), and UK shoe sizes. Average foot sizes by age are also provided for reference when shopping online.

Formula

Korean (KR) size = foot length in mm
European (EU) size ≈ (foot length cm + 1.5) × 1.5
US size = based on conversion chart from foot length (cm)
UK size ≈ US size - 1 (for infant sizes)

* Brand-specific variations exist; always use actual measurements.

How to Use

  1. 1Measure your baby's foot length (place foot on paper and measure from the longest toe to the heel).
  2. 2Enter the foot length in cm or mm.
  3. 3Click the 'Calculate' button.
  4. 4Korean, US, European, and UK sizes are displayed simultaneously.

Tips

  • ✔Measure in the afternoon — babies' feet also swell slightly during the day.
  • ✔Add about 1–1.5 cm of growing room to the actual foot length for the right fit.
  • ✔Baby feet grow rapidly — re-measure every 2–3 months.
  • ✔Shoes that are too small can affect foot development, so check regularly.
  • ✔Size may vary by brand, so also refer to the specific brand's size chart.

FAQ

Q. How do I measure my baby's foot?

Place a piece of paper on the floor and have your baby stand on it (if they cannot stand, press their foot against the paper and trace the outline). Measure from the tip of the longest toe to the back of the heel with a ruler. Measure both feet and use the larger measurement.

Q. How often should I replace baby shoes?

Check sizing every 2 months for 0–15 months, every 3 months for 15–24 months, and every 4 months for ages 2–3. Replace shoes when toes reach the end.

Q. How do Korean and US sizes differ?

Korean sizes directly correspond to foot length in millimeters (e.g., 130 mm = size 130). US sizes use a separate numbering system; for example, 130 mm is approximately US infant size 5.5–6.

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