Gray to Millirad Converter
Convert Gray (Gy) to Millirad (mrad) instantly. 1 Gy = 100,000 mrad.
Radiation Converter
10 units available
1 Gy = 100,000 mrad
Formula:
mrad = Gy × 100,000With your value: 1 Gy = 100,000 mrad
Other Gray to Millirad conversions
Gray to Millirad Conversion Table
| Gray (Gy) | Millirad (mrad) |
|---|---|
| 0.5 | 50,000 |
| 1 | 100,000 |
| 2 | 200,000 |
| 5 | 500,000 |
| 10 | 1,000,000 |
| 15 | 1,500,000 |
| 20 | 2,000,000 |
| 25 | 2,500,000 |
| 50 | 5,000,000 |
| 100 | 10,000,000 |
| 250 | 25,000,000 |
| 500 | 50,000,000 |
| 1000 | 100,000,000 |
Millirad to Gray Conversion Table
| Millirad (mrad) | Gray (Gy) |
|---|---|
| 0.5 | 5.000000e-6 |
| 1 | 1.000000e-5 |
| 2 | 2.000000e-5 |
| 5 | 5.000000e-5 |
| 10 | 0.0001 |
| 15 | 0.00015 |
| 20 | 0.0002 |
| 25 | 0.00025 |
| 50 | 0.0005 |
| 100 | 0.001 |
| 250 | 0.0025 |
| 500 | 0.005 |
| 1000 | 0.01 |
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.
Gray (Gy)
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
Millirad (mrad)
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 Gray to Millirad
To convert from Gray (Gy) to Millirad (mrad), multiply the value by 100,000.
Formula: mrad = Gy × 100,000
Reverse: Gy = mrad × 0.00001
Step-by-Step Example
- Start with your value in Gray. For example: 5 Gy
- Multiply by the conversion factor: 5 x 100,000
- The result is: 500,000 mrad
About Gray
The gray (Gy) is the SI unit of absorbed radiation dose. It measures the amount of energy deposited in a mass of matter by ionizing radiation.
Common uses: medicine, nuclear physics, radiotherapy.
About Millirad
The millirad (mrad) is a unit of radiation dose. One millirad 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 Millirad are in 1 Gray?
There are exactly 100,000 Millirad in 1 Gray. This means the conversion factor from Gray to Millirad is 100,000.
What is the formula to convert Gray to Millirad?
The formula to convert Gray to Millirad is: mrad = Gy × 100,000. For example, to convert 10 Gray to Millirad, you would multiply 10 by 100,000.
What is a Gray?
The gray (Gy) is the SI unit of absorbed radiation dose. It measures the amount of energy deposited in a mass of matter by ionizing radiation.
What is a Millirad?
The millirad (mrad) is a unit of radiation dose. One millirad 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 Gray?
The Gray is commonly used in medicine, nuclear physics, radiotherapy.
Related Radiation Conversions
Cite this page
UnitConvertLab. (2026). Gray to Millirad converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/gray-to-millirad