One Gray equals 1 Sievert. You can also write this as 1 Gray = 1 Sievert. Use the calculator to convert Gray to Sievert instantly.
Use this Gray to Sievert converter to change a value from Gray into Sievert. Enter the measurement, review the result, and use the conversion when comparing values or checking a formula.
This conversion is useful when a measurement is recorded in Gray but a report, specification, or calculation requires Sievert. The page includes the unit definitions, a worked example, and a conversion table for related units.
Use the result as a reference and check the displayed precision before copying it into technical or scientific work. The last digits may be rounded for readability.
Gray and Sievert describe the same radiation absorbed dose measurement in different units. Converting between them makes values easier to compare when different unit systems are used.
How to convert Gray to Sievert (Gy to Sv)
To convert Gray to Sievert, multiply by 1. The formula is Gray × 1 = Sievert. See the example below.
1 Gray = 1 × 1 = 1 Sievert
Gray is a unit of measurement for absorbed ionizing radiation dose. It describes absorption of one joule of energy in the form of ionizing radiation by one kilogram of tissue. The symbol for Gray is Gy.
Sievert is a unit of measurement for absorbed ionizing radiation dose. One sievert is equal to the amount of radiation necessary to produce the same effect on living tissue as one gray of high-penetration x-rays. The symbol for Sievert is Sv.
How to Use Gray to Sievert Converter
Select Gray from the first dropdown and enter the value you want to convert.
Choose Sievert in the second dropdown to set the target unit.
Review the converted value in the output field.
Check the displayed precision before using the result in another calculation.
For another result, change the input value or either selected unit. The conversion uses the unit definitions in the calculator and formats the result for display.
Example of Gray to Sievert Conversion
Frequently asked questions about Gray to Sievert conversion
What does the Gray to Sievert conversion show?
It shows the equivalent value of one unit in another unit, making it easier to compare measurements and check calculations across different scales.
When should I use a Gray to Sievert converter?
Use it when you need to compare values, convert technical data, or switch between units used in different settings or systems.
Is this Gray to Sievert calculator accurate?
It applies the conversion relationship used by the calculator and formats the result for display. Verify the shown precision when the value is used in technical or scientific work.