Convert Milliroentgen to Kilorad
Convert milliroentgens to kilorads by entering a value below.
How to Convert Milliroentgens to Kilorads
The milliroentgen and kilorad are both units of radiation dose. 1 kilorad equals 1140250.8552 milliroentgens. This means to convert milliroentgens to kilorads, you divide by 1140250.8552.
Formula
Step-by-Step Example
Convert 5 mR to kilorads:
We need to convert milliroentgens to kilorads
Since 1 krad = 1140250.8552 mR, divide by 1140250.8552
5 ÷ 1140250.8552 = 4.385e-6
5 mR = 4.385e-6 krad
Milliroentgen to Kilorad Conversion Table
Quick reference table for common milliroentgen to kilorad conversions. Click any value for detailed calculation.
| Milliroentgens (mR) | Kilorads (krad) |
|---|---|
| 0.1 mR | 8.77e-8 krad |
| 0.5 mR | 4.385e-7 krad |
| 1 mR | 8.77e-7 krad |
| 2 mR | 1.754e-6 krad |
| 5 mR | 4.385e-6 krad |
| 10 mR | 8.77e-6 krad |
| 25 mR | 2.1925e-5 krad |
| 50 mR | 4.385e-5 krad |
| 100 mR | 8.77e-5 krad |
About These Units
Milliroentgen (mR)
A milliroentgen (mR) equals 0.001 roentgen. Radiation survey meters often display mR/h for monitoring X-ray and gamma fields. Natural background: 10-20 mR/year. Typical survey meter range: 0-1000 mR/h.
Kilorad (krad)
A kilorad (krad) equals 1,000 rads or 10 grays. Used in electronics radiation hardening: commercial chips fail at 1-10 krad, radiation-hardened: 100+ krad, space-grade: 300+ krad total ionizing dose (TID) tolerance.
Frequently Asked Questions
How do I convert milliroentgens to kilorads?
To convert milliroentgens to kilorads, divide the value by 1140250.8552. For example, 10 mR = 8.77e-6 krad.
How many kilorads are in 1 milliroentgen?
1 milliroentgen equals 8.77e-7 kilorads.
What is the formula for milliroentgens to kilorads?
The formula is: krad = mR ÷ 1140250.8552.