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About this tool
Convert curies to millicuries instantly. Free, bidirectional, and fully in-browser.
1 curie equals 1000 millicuries — enter any curie value to convert it to millicuries instantly. This Curie to Millicurie converter is a client-side tool: it applies a single multiplication (mCi = Ci × 1000) in your browser, updates the moment you type, and works in both directions — edit either field, or press swap, to convert millicuries back to curies. A reference table lists common curie values already converted, and nothing you enter is sent to a server.
Open Curie to Millicurie Converter on AltFTool — it loads instantly in your browser.
Type the value you want to convert into the Curie field.
Read the equivalent in millicuries in the result field, and copy it if needed.
Use the decimal-places slider for more or less precision, or press swap to convert millicuries to curies.
The result updates as you type, and the swap button flips the conversion to millicurie → curie without reloading.
The conversion uses the precise factor (mCi = Ci × 1000), 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 curie is 1000 millicuries. Multiply the curie value by 1000 to convert. For example, 10 Ci = 10000 mCi.
mCi = Ci × 1000. This tool applies it automatically and shows a worked example: 10 Ci = 10000 mCi.
Yes. Press the swap button, or type into the millicurie field, and the tool converts millicuries to curies using the inverse of the same relationship.
It uses the standard radioactivity definition (mCi = Ci × 1000), 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 Curie to Millicurie Converter widget to your blog or website — free, responsive, no signup. Just keep the “Widget by AltFTool” credit link visible.
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