Convert Grays to Nanograys
Convert Grays (Gy) to Nanograys (nGy) instantly and accurately.
Conversion Formula
nGy = Gy × 1000000000
About Grays
The gray (Gy) is the SI coherent unit of absorbed radiation dose, defined as 1 joule of energy deposited per kilogram of matter. Named after Harold Gray (British radiobiologist, 1905-1965). Used globally in radiotherapy: curative tumour doses 40-80 Gy fractionated; total body irradiation before bone marrow transplant 12-14 Gy. 1 Gy = 1 J/kg = 100 rad.
About Nanograys
The nanogray (nGy) equals 10⁻⁹ Gy. Background cosmic-ray dose rate at sea level is ~0.03-0.05 nGy/s; environmental low-dose-rate studies of DNA damage in cultured cells use nGy doses delivered over days; regulatory derived investigation levels for some radionuclides in food correspond to organ doses in nGy. 1 nGy = 10⁻⁹ Gy = 10⁻³ µGy.
Quick Reference Table
| Grays (Gy) | Nanograys (nGy) |
|---|---|
| 1 Gy | 1000000000 nGy |
| 2 Gy | 2 × 109 nGy |
| 5 Gy | 5 × 109 nGy |
| 10 Gy | 1 × 1010 nGy |
| 25 Gy | 2.5 × 1010 nGy |
| 50 Gy | 5 × 1010 nGy |
| 100 Gy | 1 × 1011 nGy |