Microgray is 0.000001 gray units.
Micrograys to Rads Converter — uGy to rad
Convert Microgray (uGy) to Rad (rad) using the exact conversion factor (1 microgray = 0.0001 rad). See the formula, worked examples, conversion table, and common uses.
Micrograys to Rads converter
Converter
Radiation Converter
Convert radioactivity, absorbed dose, and equivalent dose units by compatible radiation family.
Context values
Some unit families need one extra value for a physically accurate result.
Rad is 0.01 gray.
Result = input x 1e-6 / 0.01.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Micrograys to Rads
Microgray and Rad both belong to the radiation-measurement family, though radiation quantities fall into genuinely distinct categories: absorbed dose (gray, rad) measures energy deposited in matter, equivalent dose (sievert, rem) weights that for biological harm, and activity (becquerel, curie) measures how often a radioactive source decays — this page only converts between units of the same kind. Specifically: Microgray is 0.000001 gray units, and rad is 0.01 gray.
Formula
rads = micrograys × 0.0001
This factor comes from each unit's defined relationship to the category's base unit: 1 microgray equals 0.000001 base units, and 1 rad equals 0.01 base units, so dividing one by the other gives the direct microgray-to-rad factor of 0.0001.
Simple example
1 uGy × 0.0001 = 0.0001 rad
1 microgray = 0.0001 rads.
Real-world example
10 uGy × 0.0001 = 0.001 rad
10 micrograys = 0.001 rads.
Conversion table
| Microgray (uGy) | Rad (rad) |
|---|---|
| 0.001 uGy | 1e-7 rad |
| 0.01 uGy | 0.000001 rad |
| 0.1 uGy | 0.00001 rad |
| 1 uGy | 0.0001 rad |
| 10 uGy | 0.001 rad |
| 100 uGy | 0.01 rad |
Reverse conversion: Rad to Microgray
0.0001 rad × 10000 = 1 uGy
0.0001 rads = 1 micrograys.
micrograys = rads × 10000
For a page dedicated to this direction, see Rad to Microgray.
Understanding the Microgray (uGy)
Microgray is 0.000001 gray units.
Understanding the Rad
Rad (rad) measures absorbed radiation dose. 'Radiation absorbed dose' — the US customary unit of absorbed radiation dose, fixed at exactly 0.01 gray. It is classified as a non-SI unit, still common in the US.
Where it's used: Still used in some US medical and historical contexts alongside the SI gray
Rad vs. gray. Both measure absorbed radiation dose; the gray is the modern SI unit while the rad is the older US customary unit, related by 1 gray = 100 rad exactly.
Uses of the Rad today
- US radiation therapy dose records (historically)
- US nuclear regulatory and medical physics contexts
Rad — sources
- NIST Guide to the SI, Appendix B — Lists the rad among non-SI units with an exact SI equivalence.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many rads are in 1 microgray?
1 microgray equals 0.0001 rads, using the exact defined conversion factor rather than an estimate.
How do I convert microgray to rad?
Multiply the microgray value by 0.0001. The converter above does this instantly to whatever precision you set.
How do I convert rad back to microgray?
Use the reverse factor: 1 rad equals 10,000 micrograys. You can also use the swap control in the converter above to flip the direction instantly.
What is a microgray?
Microgray (uGy) is a unit of radiation.
What is a rad?
Rad (rad) measures absorbed radiation dose. 'Radiation absorbed dose' — the US customary unit of absorbed radiation dose, fixed at exactly 0.01 gray. It is classified as a non-SI unit, still common in the US.
Is the microgray to rad conversion exact?
Yes. 'Radiation absorbed dose' — the US customary unit of absorbed radiation dose, fixed at exactly 0.01 gray. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
What is the difference between rad vs. gray?
Both measure absorbed radiation dose; the gray is the modern SI unit while the rad is the older US customary unit, related by 1 gray = 100 rad exactly.