Convert Kiloroentgens to Milliroentgens

Convert Kiloroentgens (kR) to Milliroentgens (mR) instantly and accurately.

Kiloroentgens (kR)
Milliroentgens (mR)

Conversion Formula

mR = kR × 1000000

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 Milliroentgens

The milliroentgen (mR) equals 2.58 × 10⁻⁷ C/kg. Standard unit in US health physics for area gamma surveys: personal dosimeters and Geiger counters in medical and industrial radiography settings display mR/h; NRC licence conditions often specify dose-rate limits in mR/h at facility boundaries. 1 mR = 2.58 × 10⁻⁷ C/kg.

Quick Reference Table

Kiloroentgens (kR)Milliroentgens (mR)
1 kR1000000 mR
2 kR2000000 mR
5 kR5000000 mR
10 kR10000000 mR
25 kR25000000 mR
50 kR50000000 mR
100 kR100000000 mR

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