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Convert Milliroentgens to Coulombs per Kilogram

1 milliroentgen = 2.58e-7 coulombs per kilogram. Multiply the number of milliroentgens by 2.58e-7.

Result
2.58e-7

1 mR = 2.58e-7 C/kg

Multiply the number of milliroentgens by 2.58e-7.

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

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Milliroentgens to Coulombs per Kilogram table

MilliroentgensCoulombs per Kilogram
1 mR2.58e-7 C/kg
2 mR5.16e-7 C/kg
3 mR7.74e-7 C/kg
4 mR0.000001032 C/kg
5 mR0.00000129 C/kg
10 mR0.00000258 C/kg
20 mR0.00000516 C/kg
25 mR0.00000645 C/kg
50 mR0.0000129 C/kg
100 mR0.0000258 C/kg
500 mR0.000129 C/kg
1000 mR0.000258 C/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 coulomb per kilogram (C/kg) is an SI base or derived unit of radiation exposure.

Going the other way, 1 coulomb per kilogram = 3,875,969 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 coulombs per kilogram are in a milliroentgen?
1 milliroentgen = 2.58e-7 coulombs per kilogram.
How do you convert milliroentgens to coulombs per kilogram?
Multiply the number of milliroentgens by 2.58e-7.
What is 10 mR in C/kg?
10 mR = 0.00000258 C/kg.

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