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Sizes & clothing

Children's size converter

Match height to an approximate children's age.

Your result

Complete the fields and calculate.

Calculation method and formula

Clothing size / height → age table

Understand the inputs

Clothing size / height
Choose the matching option; it determines the table value or calculation variant.

Assumptions and limitations

The mapping uses the H&M kids chart as an example: size 86 about 12–18 months and 104 about 3–4 years. It is not a universal age standard. Body measurements and the specific brand chart matter for fit.

The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.

Worked example

Illustrative values. Replace them with your own inputs for your calculation.

Clothing size / height
104 cm
Example result3–4 years (approx.)

Children grow differently; body measurements are more reliable than age.

Model revision: October 17, 2026 · How CleverCalc works

FAQ

Frequently asked questions

How does Children's size converter work?+

Clothing size / height → age table. The mapping uses the H&M kids chart as an example: size 86 about 12–18 months and 104 about 3–4 years. It is not a universal age standard. Body measurements and the specific brand chart matter for fit.

What assumptions should I consider for this result?+

The mapping uses the H&M kids chart as an example: size 86 about 12–18 months and 104 about 3–4 years. It is not a universal age standard. Body measurements and the specific brand chart matter for fit. The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.

How accurate is the result?+

The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation. Prices, measurements and model assumptions determine how well the result represents your situation.

Is this calculator free?+

Yes. Calculations and PDF export work without an account or registration.

What happens to my inputs?+

Calculations run in your browser. Results are saved locally only when you add them to My results; favourites and history are also local. Shared links contain your values. The currency tool requests the selected currencies from its rate provider without sending your amount.

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