Hectogray is 100 gray units.
Hectograys to Kilograys Converter — hGy to kGy
Convert Hectogray (hGy) to Kilogray (kGy) using the exact conversion factor (1 hectogray = 0.1 kilogray). See the formula, worked examples, and conversion table.
Hectograys 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 100 / 1000.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Hectograys to Kilograys
Hectogray 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: Hectogray is 100 gray units, and kilogray is 1000 gray units.
Formula
kilograys = hectograys × 0.1
This factor comes from each unit's defined relationship to the category's base unit: 1 hectogray equals 100 base units, and 1 kilogray equals 1000 base units, so dividing one by the other gives the direct hectogray-to-kilogray factor of 0.1.
Simple example
1 hGy × 0.1 = 0.1 kGy
1 hectogray = 0.1 kilograys.
Real-world example
10 hGy × 0.1 = 1 kGy
10 hectograys = 1 kilogray.
Conversion table
| Hectogray (hGy) | Kilogray (kGy) |
|---|---|
| 0.001 hGy | 0.0001 kGy |
| 0.01 hGy | 0.001 kGy |
| 0.1 hGy | 0.01 kGy |
| 1 hGy | 0.1 kGy |
| 10 hGy | 1 kGy |
| 100 hGy | 10 kGy |
Reverse conversion: Kilogray to Hectogray
0.1 kGy × 10 = 1 hGy
0.1 kilograys = 1 hectogray.
hectograys = kilograys × 10
For a page dedicated to this direction, see Kilogray to Hectogray.
Understanding the Hectogray (hGy)
Hectogray is 100 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 hectogray?
1 hectogray equals 0.1 kilograys, using the exact defined conversion factor rather than an estimate.
How do I convert hectogray to kilogray?
Multiply the hectogray value by 0.1. The converter above does this instantly to whatever precision you set.
How do I convert kilogray back to hectogray?
Use the reverse factor: 1 kilogray equals 10 hectograys. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectogray?
Hectogray (hGy) is a unit of radiation.
What is a kilogray?
Kilogray (kGy) is a unit of radiation.
Is the hectogray to kilogray conversion exact?
Yes. Both hectogray and kilogray are defined by fixed standards rather than physical artifacts, so the factor of 0.1 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.