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About this tool
Convert millimeters to centimeters instantly. Free, bidirectional, and fully in-browser.
1 millimeter equals 0.1 centimeters — enter any millimeter value to convert it to centimeters instantly. This Millimeter to Centimeter converter is a client-side tool: it applies a single multiplication (cm = mm × 0.1) in your browser, updates the moment you type, and works in both directions — edit either field, or press swap, to convert centimeters back to millimeters. A reference table lists common millimeter values already converted, and nothing you enter is sent to a server.
Open Millimeter to Centimeter Converter on AltFTool — it loads instantly in your browser.
Type the value you want to convert into the Millimeter field.
Read the equivalent in centimeters in the result field, and copy it if needed.
Use the decimal-places slider for more or less precision, or press swap to convert centimeters to millimeters.
The result updates as you type, and the swap button flips the conversion to centimeter → millimeter without reloading.
The conversion uses the precise factor (cm = mm × 0.1), so the number matches a manual calculation to the decimal places you choose.
A slider sets 0–10 decimal places, and very small or very large results switch to scientific notation instead of rounding to zero.
Everything runs locally in your browser — no upload, no account, no limit on conversions.
One millimeter is 0.1 centimeters. Multiply the millimeter value by 0.1 to convert. For example, 10 mm = 1 cm.
cm = mm × 0.1. This tool applies it automatically and shows a worked example: 10 mm = 1 cm.
Yes. Press the swap button, or type into the centimeter field, and the tool converts centimeters to millimeters using the inverse of the same relationship.
It uses the standard distance and length definition (cm = mm × 0.1), not a rounded approximation, so results are exact to the number of decimal places you select.
Yes. The converter is a browser-side script with no network calls: your values are never uploaded, and once the page has loaded it keeps working without a connection.
Add the Millimeter to Centimeter Converter widget to your blog or website — free, responsive, no signup. Just keep the “Widget by AltFTool” credit link visible.
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