RADIATION
Radiation exposure
Ionizing-radiation exposure in air.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Result0.001 R1 mR = 0.001 R
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mR to R Converter
Convert milliroentgen (mR) to roentgen (R). Enter a value for an instant result, or use the examples and reverse conversion below.
520units ready to convert
HOW IT IS CALCULATED
Convert through coulomb per kilogram
Enter a milliroentgen value to calculate roentgen with full internal precision before display rounding.
Display PrecisionAuto · 6 significant digits
Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| coulomb per kilogramfrom mR | C/kg | 0.000000258 |
| millicoulomb per kilogramfrom mR | mC/kg | 0.000258 |
| roentgenfrom mR | R | 0.001 |
| milliroentgenfrom mR | mR | 1 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
mR to R Conversion Reference
Milliroentgen (mR) and roentgen (R) are units of radiation exposure. Use this page to convert in either direction.
Conversion Examples
| Milliroentgen (mR) | Roentgen (R) |
|---|---|
| 1 mR | 0.001 R |
| 5 mR | 0.005 R |
| 10 mR | 0.01 R |
| 100 mR | 0.1 R |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
Reverse Conversion
R to mR (roentgen to milliroentgen)