Convert Ergs per gram to Grays
Convert Ergs per gram (erg/g) to Grays (Gy) instantly and accurately.
Conversion Formula
Gy = erg/g × 0.0001
About Ergs per gram
The erg per gram (erg/g) equals exactly 10⁻⁴ Gy and is the CGS-Gaussian unit of absorbed dose. Because 1 rad was originally defined as 100 erg/g, this unit is directly linked to the historical radiation system. Still found in older nuclear physics and health physics texts predating SI adoption. 1 erg/g = 10⁻⁴ Gy = 0.1 mGy.
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
| Ergs per gram (erg/g) | Grays (Gy) |
|---|---|
| 1 erg/g | 0.0001 Gy |
| 2 erg/g | 0.0002 Gy |
| 5 erg/g | 0.0005 Gy |
| 10 erg/g | 0.001 Gy |
| 25 erg/g | 0.0025 Gy |
| 50 erg/g | 0.005 Gy |
| 100 erg/g | 0.01 Gy |