Milligray to Sievert Converter
Convert Milligray (mGy) to Sievert (Sv) instantly. 1 mGy = 0.001 Sv.
Radiation Converter
10 units available
1 mGy = 0.001 Sv
Formula:
Sv = mGy × 0.001With your value: 1 mGy = 0.001 Sv
Other Milligray to Sievert conversions
Milligray to Sievert Conversion Table
| Milligray (mGy) | Sievert (Sv) |
|---|---|
| 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 |
Sievert to Milligray Conversion Table
| Sievert (Sv) | Milligray (mGy) |
|---|---|
| 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 |
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.
Milligray (mGy)
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
Sievert (Sv)
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 Milligray to Sievert
To convert from Milligray (mGy) to Sievert (Sv), multiply the value by 0.001.
Formula: Sv = mGy × 0.001
Reverse: mGy = Sv × 1,000
Step-by-Step Example
- Start with your value in Milligray. For example: 5 mGy
- Multiply by the conversion factor: 5 x 0.001
- The result is: 0.005 Sv
About Milligray
The milligray (mGy) is a unit of radiation dose. One milligray equals 0.001 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.
About Sievert
The sievert (Sv) is the SI unit of equivalent radiation dose, which accounts for the biological effect of ionizing radiation on human tissue.
Fun Fact: A typical dental X-ray is about 0.005 millisieverts.
Common uses: radiation safety, medicine, environmental monitoring.
Frequently Asked Questions
How many Sievert are in 1 Milligray?
There are exactly 0.001 Sievert in 1 Milligray. This means the conversion factor from Milligray to Sievert is 0.001.
What is the formula to convert Milligray to Sievert?
The formula to convert Milligray to Sievert is: Sv = mGy × 0.001. For example, to convert 10 Milligray to Sievert, you would multiply 10 by 0.001.
What is a Milligray?
The milligray (mGy) is a unit of radiation dose. One milligray equals 0.001 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 is a Sievert?
The sievert (Sv) is the SI unit of equivalent radiation dose, which accounts for the biological effect of ionizing radiation on human tissue.
What are the common uses of Milligray?
The Milligray is commonly used in radiation calculations, engineering and science, education.
Related Radiation Conversions
Cite this page
UnitConvertLab. (2026). Milligray to Sievert converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/milligray-to-sievert