How to convert grays to rads

To convert grays to rads, multiply the value by the factor: 1 Gy = 100 rad. In reverse: 1 rad = 0.01 Gy. Enter a number above for an instant result.

Gray and rad are absorbed-dose units — radiation energy per unit mass. The rad is a non-SI unit from older sources and dosimetry; the gray is the SI unit (1 J/kg). The relation: 1 Gy = 100 rad.

Use it to convert values from source certificates, reports and regulations. Need other units? The full dose converter has sievert, rem, gray, rad and roentgen.

Examples: 1 Gy = 100 rad; 10 Gy = 1,000 rad; 100 Gy = 10,000 rad; 1,000 Gy = 100,000 rad. Reverse: 1 rad = 0.01 Gy.