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Convert Disintegrations per Minute to Millicurie

Type the number of disintegrations per minute that you wish to convert to millicuries.

1 dpm (disintegrations per minute) = 4.5045135135e-19 mCi (millicuries)
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How to Convert Disintegrations per Minute to Millicuries

The disintegrations per minute and millicurie are both units of radioactivity. By definition, 1 millicurie equals exactly 2.21999556e18 disintegrations per minute. This means to convert disintegrations per minute to millicuries, you divide by 2.21999556e18.

Formula

millicuries = disintegrations per minute ÷ 2.21999556e18

Step-by-Step Example

Convert 5 dpm to millicuries:

1
Convert 5 dpm to millicuries

We need to convert disintegrations per minute to millicuries

2
Apply the formula

Since 1 mCi = 2.21999556e18 dpm, divide by 2.21999556e18

5 ÷ 2.21999556e18 = 2.2522567568e-18

✓
Answer

5 dpm = 2.2522567568e-18 mCi

Disintegrations per Minute to Millicurie Conversion Table

Quick reference table for common disintegrations per minute to millicurie conversions. Click any value for detailed calculation.

Disintegrations per Minute (dpm) Millicuries (mCi)
0.1 dpm 4.5045135135e-20 mCi
0.5 dpm 2.2522567568e-19 mCi
1 dpm 4.5045135135e-19 mCi
2 dpm 9.009027027e-19 mCi
5 dpm 2.2522567568e-18 mCi
10 dpm 4.5045135135e-18 mCi
25 dpm 1.1261283784e-17 mCi
50 dpm 2.2522567568e-17 mCi
100 dpm 4.5045135135e-17 mCi

About These Units

Disintegrations per Minute (dpm)

Disintegrations per minute (dpm) equals 1/60 becquerel. Standard in liquid scintillation counting and wipe test analysis. One becquerel = 60 dpm. One microcurie = 2.22×10⁶ dpm. Accounts for true activity independent of detector efficiency.

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 disintegrations per minute to millicuries?

To convert disintegrations per minute to millicuries, divide the value by 2.21999556e18. For example, 10 dpm = 4.5045135135e-18 mCi.

How many millicuries are in 1 disintegrations per minute?

1 disintegrations per minute equals 4.5045135135e-19 millicuries.

What is the formula for disintegrations per minute to millicuries?

The formula is: mCi = dpm ÷ 2.21999556e18.