Convert Rads to Kilorads
Convert Rads (rad) to Kilorads (krad) instantly and accurately.
Conversion Formula
krad = rad × 0.001
About Rads
The rad (rad) equals exactly 0.01 Gy = 100 erg/g. The pre-SI unit of absorbed dose, defined by the ICRU in 1953, still widely used in the US in radiation therapy (cGy = rad numerically), radiation biology, and NRC regulations. Whole-body 50% lethal dose (LD50) for humans ~350-450 rad. 1 rad = 0.01 Gy = 1 cGy.
About Kilorads
The kilorad (krad) equals 10 Gy. Used in radiation hardness testing of electronics for space and military applications: commercial components typically withstand 0.1-10 krad(Si); military-grade components are specified to 100-1000 krad(Si). Semiconductor device qualification standards (MIL-STD-883, ESCC 22900) quote total ionising dose in krad. 1 krad = 10 Gy.
Quick Reference Table
| Rads (rad) | Kilorads (krad) |
|---|---|
| 1 rad | 0.001 krad |
| 2 rad | 0.002 krad |
| 5 rad | 0.005 krad |
| 10 rad | 0.01 krad |
| 25 rad | 0.025 krad |
| 50 rad | 0.05 krad |
| 100 rad | 0.1 krad |