Centigray is 0.01 gray units.
Centigrays to Kilograys Converter — cGy to kGy
Convert Centigray (cGy) to Kilogray (kGy) using the exact conversion factor (1 centigray = 0.00001 kilogray). See the formula, worked examples, and conversion table.
Centigrays to Kilograys converter
Converter
Radiation Converter
Convert radioactivity, absorbed dose, and equivalent dose units by compatible radiation family.
Context values
Some unit families need one extra value for a physically accurate result.
Kilogray is 1000 gray units.
Result = input x 0.01 / 1000.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Centigrays to Kilograys
Centigray and Kilogray both belong to the radiation-measurement family, though radiation quantities fall into genuinely distinct categories: absorbed dose (gray, rad) measures energy deposited in matter, equivalent dose (sievert, rem) weights that for biological harm, and activity (becquerel, curie) measures how often a radioactive source decays — this page only converts between units of the same kind. Specifically: Centigray is 0.01 gray units, and kilogray is 1000 gray units.
Formula
kilograys = centigrays × 0.00001
This factor comes from each unit's defined relationship to the category's base unit: 1 centigray equals 0.01 base units, and 1 kilogray equals 1000 base units, so dividing one by the other gives the direct centigray-to-kilogray factor of 0.00001.
Simple example
1 cGy × 0.00001 = 0.00001 kGy
1 centigray = 0.00001 kilograys.
Real-world example
10 cGy × 0.00001 = 0.0001 kGy
10 centigrays = 0.0001 kilograys.
Conversion table
| Centigray (cGy) | Kilogray (kGy) |
|---|---|
| 0.001 cGy | 1e-8 kGy |
| 0.01 cGy | 1e-7 kGy |
| 0.1 cGy | 0.000001 kGy |
| 1 cGy | 0.00001 kGy |
| 10 cGy | 0.0001 kGy |
| 100 cGy | 0.001 kGy |
Reverse conversion: Kilogray to Centigray
0.00001 kGy × 100000 = 1 cGy
0.00001 kilograys = 1 centigray.
centigrays = kilograys × 100000
For a page dedicated to this direction, see Kilogray to Centigray.
Understanding the Centigray (cGy)
Centigray is 0.01 gray units.
Understanding the Kilogray (kGy)
Kilogray is 1000 gray units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograys are in 1 centigray?
1 centigray equals 0.00001 kilograys, using the exact defined conversion factor rather than an estimate.
How do I convert centigray to kilogray?
Multiply the centigray value by 0.00001. The converter above does this instantly to whatever precision you set.
How do I convert kilogray back to centigray?
Use the reverse factor: 1 kilogray equals 100,000 centigrays. You can also use the swap control in the converter above to flip the direction instantly.
What is a centigray?
Centigray (cGy) is a unit of radiation.
What is a kilogray?
Kilogray (kGy) is a unit of radiation.
Is the centigray to kilogray conversion exact?
Yes. Both centigray and kilogray are defined by fixed standards rather than physical artifacts, so the factor of 0.00001 used above is exact to as many digits as you choose to display.
What's the difference between absorbed dose, equivalent dose, and activity?
Absorbed dose (gray, rad) measures the energy radiation deposits in matter. Equivalent dose (sievert, rem) adjusts that figure for how harmful different types of radiation are to biological tissue. Activity (becquerel, curie) measures how often a radioactive source decays, independent of how much dose a person actually receives from it.