Convert Gray to Kilogray
Convert grays to kilograys by entering a value below.
How to Convert Grays to Kilograys
The gray and kilogray are both units of radiation dose. By definition, 1 kilogray equals exactly 1000 grays. This means to convert grays to kilograys, you divide by 1000.
Formula
Step-by-Step Example
Convert 5 Gy to kilograys:
We need to convert grays to kilograys
Since 1 kGy = 1000 Gy, divide by 1000
5 ÷ 1000 = 0.005
5 Gy = 0.005 kGy
Gray to Kilogray Conversion Table
Quick reference table for common gray to kilogray conversions. Click any value for detailed calculation.
| Grays (Gy) | Kilograys (kGy) |
|---|---|
| 0.1 Gy | 0.0001 kGy |
| 0.5 Gy | 0.0005 kGy |
| 1 Gy | 0.001 kGy |
| 2 Gy | 0.002 kGy |
| 5 Gy | 0.005 kGy |
| 10 Gy | 0.01 kGy |
| 25 Gy | 0.025 kGy |
| 50 Gy | 0.05 kGy |
| 100 Gy | 0.1 kGy |
About These Units
Gray (Gy)
The gray (Gy) is the SI unit of absorbed dose: energy deposited per unit mass (1 Gy = 1 J/kg). Named after Louis Harold Gray. For gamma/X-rays and beta particles, 1 Gy ≈ 1 Sv (quality factor Q=1). Radiation therapy total dose: 40-80 Gy.
Kilogray (kGy)
A kilogray (kGy) equals 1,000 grays. Used for industrial irradiation: food preservation 1-10 kGy, medical device sterilization 25-50 kGy, cross-linking polymers 50-200 kGy. Far above any biological survivability.
Frequently Asked Questions
How do I convert grays to kilograys?
To convert grays to kilograys, divide the value by 1000. For example, 10 Gy = 0.01 kGy.
How many kilograys are in 1 gray?
1 gray equals 0.001 kilograys.
What is the formula for grays to kilograys?
The formula is: kGy = Gy ÷ 1000.