Convert Nanograys to Grays
Convert Nanograys (nGy) to Grays (Gy) instantly and accurately.
Conversion Formula
Gy = nGy × 1.000000000e-9
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.
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.
Quick Reference Table
| Nanograys (nGy) | Grays (Gy) |
|---|---|
| 1 nGy | 1 × 10-9 Gy |
| 2 nGy | 2 × 10-9 Gy |
| 5 nGy | 5 × 10-9 Gy |
| 10 nGy | 1 × 10-8 Gy |
| 25 nGy | 2.5 × 10-8 Gy |
| 50 nGy | 5 × 10-8 Gy |
| 100 nGy | 1 × 10-7 Gy |