The radiation dose converter is a free online tool that helps you convert between physics units quickly and accurately. It supports 5 units including Gray (Gy), Rad (rad), Sievert (Sv), Rem (rem), Milligray (mGy). The core conversion formula is: 1 Gy = 100 rad. For example, 1 Gray equals approximately 100 Rad. Conversely, 1 Rad equals approximately 0.01 Gray. Common conversions: 5 Gy = 500 rad, 10 Gy = 1,000 rad, 25 Gy = 2,500 rad, 50 Gy = 5,000 rad, 100 Gy = 10,000 rad. This converter is useful for students, engineers, scientists, and professionals who need accurate physics unit conversions. Whether you are working on homework, technical specifications, research data, or everyday measurements, this tool provides instant, reliable results. All conversions are calculated relative to a single base unit for consistency and precision across all supported units. 1 Sievert is a lethal dose of radiation. Radiation dose is measured differently for different types of radiation.