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Convert Microroentgens to Milliroentgens

1 microroentgen = 0.001 milliroentgens. Multiply the number of microroentgens by 0.001.

Result
0.001

1 µR = 0.001 mR

Multiply the number of microroentgens by 0.001.

For information only. Confirm dose and exposure values with a qualified radiation safety professional. About accuracy

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Popular radiation exposure conversions

Microroentgens to Milliroentgens table

MicroroentgensMilliroentgens
1 µR0.001 mR
2 µR0.002 mR
3 µR0.003 mR
4 µR0.004 mR
5 µR0.005 mR
10 µR0.01 mR
20 µR0.02 mR
25 µR0.025 mR
50 µR0.05 mR
100 µR0.1 mR
500 µR0.5 mR
1000 µR1 mR

About these units

The microroentgen (µR) is a specialist or regional unit of radiation exposure, equal to 2.58e-10 coulombs per kilogram.

The milliroentgen (mR) is a specialist or regional unit of radiation exposure, equal to 2.58e-7 coulombs per kilogram.

Going the other way, 1 milliroentgen = 1,000 microroentgens. Exposure measures the ionisation that X-rays or gamma rays produce in air. Survey meters and older equipment read in roentgen, R, while the SI unit is the coulomb per kilogram. Exactly 1 R is 2.58 × 10⁻⁴ C/kg. Exposure is not the same as absorbed or effective dose.

Frequently asked

How many milliroentgens are in a microroentgen?
1 microroentgen = 0.001 milliroentgens.
How do you convert microroentgens to milliroentgens?
Multiply the number of microroentgens by 0.001.
What is 10 µR in mR?
10 µR = 0.01 mR.

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