Rad to Millirem Converter
Convert Rad (rad) to Millirem (mrem) instantly. 1 rad = 1,000 mrem.
Radiation Converter
10 units available
1 rad = 1,000 mrem
Formula:
mrem = rad × 1,000With your value: 1 rad = 1,000 mrem
Other Rad to Millirem conversions
Rad to Millirem Conversion Table
| Rad (rad) | Millirem (mrem) |
|---|---|
| 0.5 | 500 |
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 15 | 15,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1000 | 1,000,000 |
Millirem to Rad Conversion Table
| Millirem (mrem) | Rad (rad) |
|---|---|
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Rad (rad)
Radiation
Gray and sievert are coherent SI units (J/kg). Rad and rem are exactly 0.01 Gy and 0.01 Sv; the curie is exactly 3.7 × 10¹⁰ Bq.
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Millirem (mrem)
Radiation
Gray and sievert are coherent SI units (J/kg). Rad and rem are exactly 0.01 Gy and 0.01 Sv; the curie is exactly 3.7 × 10¹⁰ Bq.
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Rad to Millirem
To convert from Rad (rad) to Millirem (mrem), multiply the value by 1,000.
Formula: mrem = rad × 1,000
Reverse: rad = mrem × 0.001
Step-by-Step Example
- Start with your value in Rad. For example: 5 rad
- Multiply by the conversion factor: 5 x 1,000
- The result is: 5,000 mrem
About Rad
The rad is a non-SI unit of absorbed radiation dose. One rad is equal to 0.01 gray.
Common uses: legacy radiation monitoring, industrial radiation.
About Millirem
The millirem (mrem) is a unit of radiation dose. One millirem equals 1.000000 × 10^-5 grays. UnitConvertLab converts it against every other radiation unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: radiation calculations, engineering and science, education.
Frequently Asked Questions
How many Millirem are in 1 Rad?
There are exactly 1,000 Millirem in 1 Rad. This means the conversion factor from Rad to Millirem is 1,000.
What is the formula to convert Rad to Millirem?
The formula to convert Rad to Millirem is: mrem = rad × 1,000. For example, to convert 10 Rad to Millirem, you would multiply 10 by 1,000.
What is a Rad?
The rad is a non-SI unit of absorbed radiation dose. One rad is equal to 0.01 gray.
What is a Millirem?
The millirem (mrem) is a unit of radiation dose. One millirem equals 1.000000 × 10^-5 grays. UnitConvertLab converts it against every other radiation unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What are the common uses of Rad?
The Rad is commonly used in legacy radiation monitoring, industrial radiation.
Related Radiation Conversions
Cite this page
UnitConvertLab. (2026). Rad to Millirem converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/rad-to-millirem