# Children Size Converter

> Children size converter: US to EU kids clothing sizes. Free children size converter with the formula shown - runs entirely in your browser, no signup.

- **Canonical URL:** https://boringtoolskit.com/children-size-converter/
- **Category:** Converters
- **Evidence level:** authored-methodology
- **Reviewed:** 2026-09-20
- **Last verified:** 2026-10-12
- **Privacy:** Inputs and results stay in this browser unless the page clearly labels an external request.

## How it works

Children's clothing runs by height (EU cm) or age (US/UK months-years). Height is the reliable axis: an EU 116 = US size 6 = about 6 years old on average, but a child 110-116 cm tall spans 4 to 7 years.

## Assumptions

- Manufacturer charts vary; conversion outputs are the standard-mapping midpoint.
- Measurements are body measurements unless the tool labels them as garment measurements.
- Between-size results round per the rule stated in the FAQ.

## Common questions

### Should I buy by age or by height?

Height, when the chart offers it (EU labels always do). Age labels assume a median child; the spread around that median is 2+ years by age 6.

### What if I fall between sizes?

Round the direction that matches use: clothing and shoes generally round up.

## Sources

- [Aggregated manufacturer sizing conventions](https://boringtoolskit.com/methodology/)

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