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Curie to Millicurie
Convert Curie to Millicurie and get the exact value instantly.
1 Ci = 1000 mCi
About this conversion
To convert Curie to Millicurie, multiply the number of Curie by 1000.
Radioactivity — decays per second — is the becquerel in SI, but the much larger curie persists in medicine and industry, where one curie equals 37 billion becquerels.
Conversion table
| Curie (Ci) | Millicurie (mCi) |
|---|---|
| 1 Ci | 1000 mCi |
| 2 Ci | 2000 mCi |
| 5 Ci | 5000 mCi |
| 10 Ci | 10000 mCi |
| 100 Ci | 100000 mCi |
How to use this converter
- Enter your Curie value
Type any number into the Curie field. It starts at 1 so you can read the rate straight away.
- Read the Millicurie result
The amount in Millicurie updates as you type, so there is no button to press and nothing to wait for.
- Swap or keep exploring
Use the swap control to flip the direction, or pick a related conversion from the list below.
Frequently asked
- How many Millicurie are in one Curie?
- One Curie equals 1000 mCi. Enter any amount above to get an exact figure for your own value.
- Is this converter accurate?
- Yes. It uses the exact international definition of each unit and computes on your device, so the only rounding is for display.
- Do you upload the numbers I enter?
- No. The Curie to Millicurie conversion runs entirely in your browser tab, and nothing you type is sent to a server.
- Does it work on my phone?
- Yes. It runs in any modern mobile browser and keeps working offline once the page has loaded.
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