Use this rad to gray converter to change a rad measurement into its gray equivalent. Enter a number in the calculator above and the result updates instantly.
Radiation dose conversions are useful for physics references, absorbed dose calculations, dosimetry tables, lab work, and radiation measurement.
What is a rad?
Rad (rad) is a radiation dose unit.
What is a gray?
Gray (Gy) is a radiation dose unit.
Rad to Gray Converter formula
To convert rad to gray, use the formula below.
1 Gy = 100 rad. This relationship is the conversion factor used by the calculator.
How to convert rad to gray
Start with the rad value, apply the formula, and round the result only after the calculation is complete.
Example: 10 rad = 0.1 Gy.
- 1 rad = 0.01 Gy
- 10 rad = 0.1 Gy
- 100 rad = 1 Gy
Manual conversion steps
- Write down the value in rad.
- Use the conversion formula: gray = rad / 100.
- Calculate the result in gray.
- Round the answer to the number of decimal places you need.
For quick checking, the converter above performs the same calculation automatically.
Common rad to gray use cases
This conversion is useful in practical situations where measurements need to move between different unit systems or audiences.
- Convert rad to gray for absorbed dose references, physics calculations, dosimetry tables, and laboratory work.
- Radiation dose conversions are useful when older units such as rad appear beside SI units such as gray.
Common mistakes when converting rad to gray
These are the most common issues to watch for when doing this conversion by hand.
- Do not mix up the direction of the conversion. rad to gray is not the same as gray to rad.
- Avoid rounding too early. Keep the full result during the calculation, then round the final answer.
Rad to Gray conversion table
| Rad | Gray |
|---|---|
| 1 rad | 0.01 Gy |
| 5 rad | 0.05 Gy |
| 10 rad | 0.1 Gy |
| 25 rad | 0.25 Gy |
| 50 rad | 0.5 Gy |
| 100 rad | 1 Gy |
How to convert gray to rad
To reverse the conversion, switch the two units in the calculator or open the reverse conversion page: gray to rad.
Reversing the units is useful when you already have a value in gray and need the equivalent value in rad.
How to use this rad to gray converter
- Enter the number you want to convert in the value field.
- Confirm that the from unit is Rad and the to unit is Gray.
- Read the converted result in the result box.
- Use the copy button if you want to paste the answer elsewhere.
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FAQ
What is the formula for rad to gray?
The formula is: gray = rad / 100.
How do I convert rad to gray by hand?
Write down the value in rad, apply the formula, and round the final result in gray.
How accurate is this converter?
The converter uses standard conversion factors and shows rounded results for readability.
Can I reverse the conversion?
Yes. Use the swap button in the converter or open the related reverse conversion page.
Why do results sometimes have many decimal places?
Some unit conversions do not produce short decimal values. Keep more decimal places for technical work, and round the answer for everyday use.