Convert Kiloroentgens to Roentgens
Convert Kiloroentgens (kR) to Roentgens (R) instantly and accurately.
Conversion Formula
R = kR × 1000
About Kiloroentgens
The kiloroentgen (kR) equals 0.258 C/kg. Used in radiation hardness testing of electronics and legacy nuclear weapons effects literature; total ionising exposure inside nuclear facilities during design-basis accident scenarios is cited in kR; some older radiation therapy machine output specifications use kR/min. 1 kR = 0.258 C/kg = 10³ R.
About Roentgens
The roentgen (R) equals exactly 2.58 × 10⁻⁴ C/kg, the historical unit of X-ray and gamma-ray exposure defined in 1928 (ICRU) and redefined exactly in 1962. Still widely used in the US: field survey instruments read in R/h; NRC and EPA regulations cite R and mR; the Chernobyl accounts famously reported readings in R/h. 1 R = 2.58 × 10⁻⁴ C/kg.
Quick Reference Table
| Kiloroentgens (kR) | Roentgens (R) |
|---|---|
| 1 kR | 1000 R |
| 2 kR | 2000 R |
| 5 kR | 5000 R |
| 10 kR | 10000 R |
| 25 kR | 25000 R |
| 50 kR | 50000 R |
| 100 kR | 100000 R |