Femtogray is 1e-15 gray units.
Femtograys to Picograys Converter — fGy to pGy
Convert Femtogray (fGy) to Picogray (pGy) using the exact conversion factor (1 femtogray = 0.001 picogray). See the formula, worked examples, and conversion table.
Femtograys 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-15 / 1e-12.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Femtograys to Picograys
Femtogray 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: Femtogray is 1e-15 gray units, and picogray is 1e-12 gray units.
Formula
picograys = femtograys × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 femtogray equals 1e-15 base units, and 1 picogray equals 1e-12 base units, so dividing one by the other gives the direct femtogray-to-picogray factor of 0.001.
Simple example
1 fGy × 0.001 = 0.001 pGy
1 femtogray = 0.001 picograys.
Real-world example
10 fGy × 0.001 = 0.01 pGy
10 femtograys = 0.01 picograys.
Conversion table
| Femtogray (fGy) | Picogray (pGy) |
|---|---|
| 0.001 fGy | 0.000001 pGy |
| 0.01 fGy | 0.00001 pGy |
| 0.1 fGy | 0.0001 pGy |
| 1 fGy | 0.001 pGy |
| 10 fGy | 0.01 pGy |
| 100 fGy | 0.1 pGy |
Reverse conversion: Picogray to Femtogray
0.001 pGy × 1000 = 1 fGy
0.001 picograys = 1 femtogray.
femtograys = picograys × 1000
For a page dedicated to this direction, see Picogray to Femtogray.
Understanding the Femtogray (fGy)
Femtogray is 1e-15 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 femtogray?
1 femtogray equals 0.001 picograys, using the exact defined conversion factor rather than an estimate.
How do I convert femtogray to picogray?
Multiply the femtogray value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert picogray back to femtogray?
Use the reverse factor: 1 picogray equals 1,000 femtograys. You can also use the swap control in the converter above to flip the direction instantly.
What is a femtogray?
Femtogray (fGy) is a unit of radiation.
What is a picogray?
Picogray (pGy) is a unit of radiation.
Is the femtogray to picogray conversion exact?
Yes. Both femtogray and picogray 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.