convertimate Radiation exposure

Milligray of air kerma to roentgen

Type a value in mGy air to get it in R instantly.

11.42R

That's 3.8× as much exposure as a minute of fluoroscopy, while a lethal whole-body exposure is 39× more.

What it means

How much exposure is that?

Information only. Medical figures are typical entrance exposures and vary widely with equipment and patient. For dose to people, use gray and sievert.

The math

How to convert mGy air to R

To convert milligray of air kerma to roentgen, multiply by 0.114155.

Example: 100 mGy air × 0.114155 = 11.4155 R.

In the other direction, 1 R = 8.76 mGy air.

Every unit

Your exposure in every unit

Tables

mGy air to R conversion table

mGy air to R conversion table
mGy airR
1 mGy air0.114155 R
5 mGy air0.570776 R
10 mGy air1.14155 R
15 mGy air1.71233 R
25 mGy air2.85388 R
50 mGy air5.70776 R
100 mGy air11.4155 R
250 mGy air28.5388 R
500 mGy air57.0776 R
1,000 mGy air114.155 R
5,000 mGy air570.776 R
R to mGy air conversion table
R to mGy air conversion table
RmGy air
1 R8.76 mGy air
5 R43.8 mGy air
10 R87.6 mGy air
15 R131.4 mGy air
25 R219 mGy air
50 R438 mGy air
100 R876 mGy air
250 R2,190 mGy air
500 R4,380 mGy air
1,000 R8,760 mGy air
5,000 R43,800 mGy air

Quick answers

Quick answers

How many R is 1 mGy air?
1 mGy air is 0.114155 R.
How many R is 10 mGy air?
10 mGy air is 1.14155 R.
How many R is 100 mGy air?
100 mGy air is 11.4155 R.

The units

About these units

Milligray of air kerma (mGy air)

How modern X-ray machines report output.

Roentgen (R)

The classic unit of exposure, 2.58 × 10⁻⁴ C/kg.

Learn more about exposure units

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