Nanogray is 1e-9 gray units.
Nanograys to Micrograys Converter — nGy to uGy
Convert Nanogray (nGy) to Microgray (uGy) using the exact conversion factor (1 nanogray = 0.001 microgray). See the formula, worked examples, and conversion table.
Nanograys to Micrograys 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.
Microgray is 0.000001 gray units.
Result = input x 1e-9 / 1e-6.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Nanograys to Micrograys
Nanogray and Microgray 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: Nanogray is 1e-9 gray units, and microgray is 0.000001 gray units.
Formula
micrograys = nanograys × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 nanogray equals 1e-9 base units, and 1 microgray equals 0.000001 base units, so dividing one by the other gives the direct nanogray-to-microgray factor of 0.001.
Simple example
1 nGy × 0.001 = 0.001 uGy
1 nanogray = 0.001 micrograys.
Real-world example
10 nGy × 0.001 = 0.01 uGy
10 nanograys = 0.01 micrograys.
Conversion table
| Nanogray (nGy) | Microgray (uGy) |
|---|---|
| 0.001 nGy | 0.000001 uGy |
| 0.01 nGy | 0.00001 uGy |
| 0.1 nGy | 0.0001 uGy |
| 1 nGy | 0.001 uGy |
| 10 nGy | 0.01 uGy |
| 100 nGy | 0.1 uGy |
Reverse conversion: Microgray to Nanogray
0.001 uGy × 1000 = 1 nGy
0.001 micrograys = 1 nanogray.
nanograys = micrograys × 1000
For a page dedicated to this direction, see Microgray to Nanogray.
Understanding the Nanogray (nGy)
Nanogray is 1e-9 gray units.
Understanding the Microgray (uGy)
Microgray is 0.000001 gray units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many micrograys are in 1 nanogray?
1 nanogray equals 0.001 micrograys, using the exact defined conversion factor rather than an estimate.
How do I convert nanogray to microgray?
Multiply the nanogray value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert microgray back to nanogray?
Use the reverse factor: 1 microgray equals 1,000 nanograys. You can also use the swap control in the converter above to flip the direction instantly.
What is a nanogray?
Nanogray (nGy) is a unit of radiation.
What is a microgray?
Microgray (uGy) is a unit of radiation.
Is the nanogray to microgray conversion exact?
Yes. Both nanogray and microgray are defined by fixed standards rather than physical artifacts, so the factor of 0.001 used above is exact to as many digits as you choose to display.
What's the difference between absorbed dose, equivalent dose, and activity?
Absorbed dose (gray, rad) measures the energy radiation deposits in matter. Equivalent dose (sievert, rem) adjusts that figure for how harmful different types of radiation are to biological tissue. Activity (becquerel, curie) measures how often a radioactive source decays, independent of how much dose a person actually receives from it.