Quick reference table
Common radiation dose rate conversions
| From | To |
|---|---|
| 1 µSv/h | 0.1 mrem/h |
| 1 mrem/h | 1 µSv/h |
| 1 µSv/h | 8.766000000 mSv/yr |
| 1 mSv/yr | 0.1140771161 µSv/h |
| 1 mSv/h | 1 µSv/h |
How to convert radiation dose rate
Dose rate is how quickly a radiation dose builds up. Geiger counters and dosimeters usually show µSv/h or mrem/h, and annual limits are quoted in mSv per year.
Every radiation dose rate unit is a fixed multiple of one base unit, the Sv/h. To convert a value, multiply it by the size of the starting unit and divide by the size of the target unit. For example, to convert µSv/h to mrem/h, multiply by 0.1. To go the other way, divide by 0.1.
The converter above does this for you and shows the exact formula under the result.
Worked examples
Microsieverts per hour to Millirem per hour
| Microsieverts per hour (µSv/h) | Millirem per hour (mrem/h) |
|---|---|
| 1 µSv/h | 0.1 mrem/h |
| 2 µSv/h | 0.2 mrem/h |
| 5 µSv/h | 0.5 mrem/h |
| 10 µSv/h | 1.0 mrem/h |
| 25 µSv/h | 2.5 mrem/h |
| 50 µSv/h | 5.0 mrem/h |
| 100 µSv/h | 10.0 mrem/h |
| 1,000 µSv/h | 100.0 mrem/h |
Millirem per hour to Microsieverts per hour
| Millirem per hour (mrem/h) | Microsieverts per hour (µSv/h) |
|---|---|
| 1 mrem/h | 1 µSv/h |
| 2 mrem/h | 2 µSv/h |
| 5 mrem/h | 5 µSv/h |
| 10 mrem/h | 1 µSv/h |
| 25 mrem/h | 25 µSv/h |
| 50 mrem/h | 5 µSv/h |
| 100 mrem/h | 1 µSv/h |
| 1,000 mrem/h | 1 µSv/h |
Radiation dose rate units explained
| Unit | Symbol | Equals |
|---|---|---|
| Sieverts per hour | Sv/h | 1 Sv/h = 1 Sv/h |
| Millisieverts per hour | mSv/h | 1 mSv/h = 0.001 Sv/h |
| Microsieverts per hour | µSv/h | 1 µSv/h = 0.000001 Sv/h |
| Nanosieverts per hour | nSv/h | 1 nSv/h = 1 × 10⁻⁹ Sv/h |
| Sieverts per second | Sv/s | 1 Sv/s = 3,600 Sv/h |
| Millisieverts per second | mSv/s | 1 mSv/s = 3.6 Sv/h |
| Microsieverts per second | µSv/s | 1 µSv/s = 0.0036 Sv/h |
| Rem per hour | rem/h | 1 rem/h = 0.01 Sv/h |
| Millirem per hour | mrem/h | 1 mrem/h = 0.00001 Sv/h |
| Microrem per hour | µrem/h | 1 µrem/h = 1 × 10⁻⁸ Sv/h |
| Millisieverts per year | mSv/yr | 1 mSv/yr = 1.140771 × 10⁻⁷ Sv/h |
| Microsieverts per year | µSv/yr | 1 µSv/yr = 1.140771 × 10⁻¹⁰ Sv/h |
Popular conversions: usv/h to mrem/h, usv/h to msv/year.
Frequently asked questions
How many µSv/h is 1 mrem/h?
One millirem per hour is 10 microsieverts per hour.
How many mSv per year is 0.1 µSv/h?
A constant 0.1 µSv/h over a year (8,766 hours) is about 0.877 mSv.
How do I convert µSv/h to mrem/h?
Multiply the value in µSv/h by 0.1 to get mrem/h. For example, 10 µSv/h = 1.0 mrem/h.
How many mrem/h is 1 µSv/h?
1 µSv/h = 0.1 mrem/h, and 1 mrem/h = 1 µSv/h.
Does this radiation dose rate converter work offline?
Yes. After the page has loaded once, all calculations run in your browser, so it keeps working without an internet connection.