Radiation Dose Converter
Convert radiation doses: Gray (Gy) to Rad, Sievert (Sv) to Rem. 1 Gy = 100 Rad; 1 Sv = 100 Rem.
Formula
1 Gy = 100 Rad; 1 Sv = 100 Rem
- Gray (Gy): SI unit of absorbed dose
- Rad: Gray equivalent (legacy unit, 1 Gy = 100 Rad)
- Sievert (Sv): SI unit of equivalent dose (accounts for radiation type biological effect)
- Rem: Sievert equivalent (legacy unit, 1 Sv = 100 Rem)
Example
Inputs
- Dose: 1
- Convert from: gy2rad
1 Gy = 100 Rad.
Frequently asked questions
What's the difference between Gy and Sv?
Gy measures absorbed energy. Sv adjusts for biological effect (quality factor). 1 Gy of alpha = higher Sv than 1 Gy of beta.
Why two unit systems?
SI units (Gy/Sv) are modern standard. Rad/Rem are legacy units still used in some countries.