Sievert to Milligray Converter
Convert Sievert (Sv) to Milligray (mGy) instantly. 1 Sv = 1,000 mGy.
Radiation Converter
10 units available
1 Sv = 1,000 mGy
Formula:
mGy = Sv × 1,000With your value: 1 Sv = 1,000 mGy
Other Sievert to Milligray conversions
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 |
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 |
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.
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
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
How to Convert Sievert to Milligray
To convert from Sievert (Sv) to Milligray (mGy), multiply the value by 1,000.
Formula: mGy = Sv × 1,000
Reverse: Sv = mGy × 0.001
Step-by-Step Example
- Start with your value in Sievert. For example: 5 Sv
- Multiply by the conversion factor: 5 x 1,000
- The result is: 5,000 mGy
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.
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.
Frequently Asked Questions
How many Milligray are in 1 Sievert?
There are exactly 1,000 Milligray in 1 Sievert. This means the conversion factor from Sievert to Milligray is 1,000.
What is the formula to convert Sievert to Milligray?
The formula to convert Sievert to Milligray is: mGy = Sv × 1,000. For example, to convert 10 Sievert to Milligray, you would multiply 10 by 1,000.
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 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 are the common uses of Sievert?
The Sievert is commonly used in radiation safety, medicine, environmental monitoring.
Related Radiation Conversions
Cite this page
UnitConvertLab. (2026). Sievert to Milligray converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/sievert-to-milligray