Convert Picocurie to Millicurie
Type the number of picocuries that you wish to convert to millicuries.
How to Convert Picocuries to Millicuries
The picocurie and millicurie are both units of radioactivity. By definition, 1 millicurie equals exactly 1e18 picocuries. This means to convert picocuries to millicuries, you divide by 1e18.
Formula
Step-by-Step Example
Convert 5 pCi to millicuries:
We need to convert picocuries to millicuries
Since 1 mCi = 1e18 pCi, divide by 1e18
5 ÷ 1e18 = 5e-18
5 pCi = 5e-18 mCi
Picocurie to Millicurie Conversion Table
Quick reference table for common picocurie to millicurie conversions. Click any value for detailed calculation.
| Picocuries (pCi) | Millicuries (mCi) |
|---|---|
| 0.1 pCi | 1e-19 mCi |
| 0.5 pCi | 5e-19 mCi |
| 1 pCi | 1e-18 mCi |
| 2 pCi | 2e-18 mCi |
| 5 pCi | 5e-18 mCi |
| 10 pCi | 1e-17 mCi |
| 25 pCi | 2.5e-17 mCi |
| 50 pCi | 5e-17 mCi |
| 100 pCi | 1e-16 mCi |
About These Units
Picocurie (pCi)
A picocurie (pCi) equals 10⁻¹² curie or 0.037 Bq. Standard US unit for radon: EPA action level is 4 pCi/L. Drinking water: 15 pCi/L alpha limit. One pCi = 2.22 decays per minute. Used extensively in US environmental regulations.
Millicurie (mCi)
A millicurie (mCi) equals 0.001 curie or 37 MBq. Standard unit for nuclear medicine imaging in US: thyroid uptake 0.1-0.2 mCi, bone scan 20-30 mCi, cardiac stress test 25-35 mCi. Laboratory calibration sources: 1-10 mCi typical.
Frequently Asked Questions
How do I convert picocuries to millicuries?
To convert picocuries to millicuries, divide the value by 1e18. For example, 10 pCi = 1e-17 mCi.
How many millicuries are in 1 picocurie?
1 picocurie equals 1e-18 millicuries.
What is the formula for picocuries to millicuries?
The formula is: mCi = pCi ÷ 1e18.