Milliroentgens to Microcoulomb/kilograms (mR to µC/kg)
Free online milliroentgen to microcoulomb/kilogram converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
RADIATION EXPOSURE CONVERTER — INSTANT RESULT
Formula: multiply the milliroentgen value by 0.258 — i.e. µC/kg = mR × 0.258
Quick check: 1 mR = 0.258 µC/kg
Quick check: 1 mR = 0.258 µC/kg
Milliroentgens to Microcoulomb/kilograms conversion table
| Milliroentgens (mR) | Microcoulomb/kilograms (µC/kg) |
|---|---|
| 1 mR | 0.258 µC/kg |
| 2 mR | 0.516 µC/kg |
| 3 mR | 0.774 µC/kg |
| 4 mR | 1.032 µC/kg |
| 5 mR | 1.29 µC/kg |
| 6 mR | 1.548 µC/kg |
| 7 mR | 1.806 µC/kg |
| 8 mR | 2.064 µC/kg |
| 9 mR | 2.322 µC/kg |
| 10 mR | 2.58 µC/kg |
| 15 mR | 3.87 µC/kg |
| 20 mR | 5.16 µC/kg |
| 25 mR | 6.45 µC/kg |
| 30 mR | 7.74 µC/kg |
| 40 mR | 10.32 µC/kg |
| 50 mR | 12.9 µC/kg |
| 75 mR | 19.35 µC/kg |
| 100 mR | 25.8 µC/kg |
| 250 mR | 64.5 µC/kg |
| 500 mR | 129 µC/kg |
| 1,000 mR | 258 µC/kg |
How to convert milliroentgens to microcoulomb/kilograms
To convert milliroentgens to microcoulomb/kilograms, multiply the amount in milliroentgens by 0.258. For example, 10 mR = 2.58 µC/kg. To convert in the other direction, divide by the same factor, or use the ⇄ swap button above.
Convert ionizing radiation exposure between coulombs per kilogram and roentgens. One roentgen is exactly 2.58×10⁻⁴ C/kg.
Frequently asked questions
How many microcoulomb/kilograms are in one milliroentgen?
One milliroentgen is exactly 0.258 microcoulomb/kilograms.
How do I convert mR to µC/kg?
Multiply the mR value by 0.258 to get µC/kg. The converter at the top of this page does this automatically and works in both directions.
How much is 100 milliroentgens in microcoulomb/kilograms?
100 milliroentgens equals 25.8 microcoulomb/kilograms.