Attogray is 1e-18 gray units.
Attograys to Picograys Converter — aGy to pGy
Convert Attogray (aGy) to Picogray (pGy) using the exact conversion factor (1 attogray = 0.000001 picogray). See the formula, worked examples, and conversion table.
Attograys to Picograys 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.
Picogray is 1e-12 gray units.
Result = input x 1e-18 / 1e-12.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Attograys to Picograys
Attogray and Picogray 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: Attogray is 1e-18 gray units, and picogray is 1e-12 gray units.
Formula
picograys = attograys × 0.000001
This factor comes from each unit's defined relationship to the category's base unit: 1 attogray equals 1e-18 base units, and 1 picogray equals 1e-12 base units, so dividing one by the other gives the direct attogray-to-picogray factor of 0.000001.
Simple example
1 aGy × 0.000001 = 0.000001 pGy
1 attogray = 0.000001 picograys.
Real-world example
10 aGy × 0.000001 = 0.00001 pGy
10 attograys = 0.00001 picograys.
Conversion table
| Attogray (aGy) | Picogray (pGy) |
|---|---|
| 0.001 aGy | 1e-9 pGy |
| 0.01 aGy | 1e-8 pGy |
| 0.1 aGy | 1e-7 pGy |
| 1 aGy | 0.000001 pGy |
| 10 aGy | 0.00001 pGy |
| 100 aGy | 0.0001 pGy |
Reverse conversion: Picogray to Attogray
0.000001 pGy × 1000000 = 1 aGy
0.000001 picograys = 1 attograys.
attograys = picograys × 1000000
For a page dedicated to this direction, see Picogray to Attogray.
Understanding the Attogray (aGy)
Attogray is 1e-18 gray units.
Understanding the Picogray (pGy)
Picogray is 1e-12 gray units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many picograys are in 1 attogray?
1 attogray equals 0.000001 picograys, using the exact defined conversion factor rather than an estimate.
How do I convert attogray to picogray?
Multiply the attogray value by 0.000001. The converter above does this instantly to whatever precision you set.
How do I convert picogray back to attogray?
Use the reverse factor: 1 picogray equals 1,000,000 attograys. You can also use the swap control in the converter above to flip the direction instantly.
What is a attogray?
Attogray (aGy) is a unit of radiation.
What is a picogray?
Picogray (pGy) is a unit of radiation.
Is the attogray to picogray conversion exact?
Yes. Both attogray and picogray are defined by fixed standards rather than physical artifacts, so the factor of 0.000001 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.