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Convert Milliroentgens to Microcoulombs per Kilogram

1 milliroentgen = 0.258 microcoulombs per kilogram. Multiply the number of milliroentgens by 0.258.

Result
0.258

1 mR = 0.258 µC/kg

Multiply the number of milliroentgens by 0.258.

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

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Milliroentgens to Microcoulombs per Kilogram table

MilliroentgensMicrocoulombs per Kilogram
1 mR0.258 µC/kg
2 mR0.516 µC/kg
3 mR0.774 µC/kg
4 mR1.032 µC/kg
5 mR1.29 µC/kg
10 mR2.58 µC/kg
20 mR5.16 µC/kg
25 mR6.45 µC/kg
50 mR12.9 µC/kg
100 mR25.8 µC/kg
500 mR129 µC/kg
1000 mR258 µC/kg

About these units

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

The microcoulomb per kilogram (µC/kg) is a metric unit of radiation exposure, equal to 0.000001 coulombs per kilogram.

Going the other way, 1 microcoulomb per kilogram = 3.875969 milliroentgens. 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 microcoulombs per kilogram are in a milliroentgen?
1 milliroentgen = 0.258 microcoulombs per kilogram.
How do you convert milliroentgens to microcoulombs per kilogram?
Multiply the number of milliroentgens by 0.258.
What is 10 mR in µC/kg?
10 mR = 2.58 µC/kg.

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