Femtogram is 1e-15 gram units.
Femtograms to Yoctograms Converter — fg to yg
Convert Femtogram (fg) to Yoctogram (yg) using the exact conversion factor (1 femtogram = 1,000,000,000 yoctogram). See the formula, worked examples, and conversion table.
Femtograms to Yoctograms converter
Converter
Mass/Weight Converter
Convert SI mass, imperial weight, jewelry, atomic, and astronomy mass units.
Context values
Some unit families need one extra value for a physically accurate result.
Yoctogram is 1e-24 gram units.
Result = input x 1e-18 / 1e-27.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Femtograms to Yoctograms
Weight conversions between Femtogram and Yoctogram come up constantly in everyday commerce, shipping, and cooking, since US packaging is usually labeled in pounds while most of the rest of the world uses kilograms. Specifically: Femtogram is 1e-15 gram units, and yoctogram is 1e-24 gram units.
Formula
yoctograms = femtograms × 1000000000
This factor comes from each unit's defined relationship to the category's base unit: 1 femtogram equals 1e-18 base units, and 1 yoctogram equals 1e-27 base units, so dividing one by the other gives the direct femtogram-to-yoctogram factor of 1000000000.
Simple example
1 fg × 1000000000 = 1,000,000,000 yg
1 femtogram = 1,000,000,000 yoctograms.
Real-world example
50 fg × 1000000000 = 50,000,000,000 yg
50 femtograms = 50,000,000,000 yoctograms.
Conversion table
| Femtogram (fg) | Yoctogram (yg) |
|---|---|
| 1 fg | 1,000,000,000 yg |
| 5 fg | 5,000,000,000 yg |
| 10 fg | 10,000,000,000 yg |
| 25 fg | 25,000,000,000 yg |
| 50 fg | 50,000,000,000 yg |
| 100 fg | 100,000,000,000 yg |
Reverse conversion: Yoctogram to Femtogram
1 yg × 1e-9 = 1e-9 fg
1 yoctogram = 1e-9 femtograms.
femtograms = yoctograms × 1e-9
For a page dedicated to this direction, see Yoctogram to Femtogram.
Understanding the Femtogram (fg)
Femtogram is 1e-15 gram units.
Understanding the Yoctogram (yg)
Yoctogram is 1e-24 gram units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many yoctograms are in 1 femtogram?
1 femtogram equals 1,000,000,000 yoctograms, using the exact defined conversion factor rather than an estimate.
How do I convert femtogram to yoctogram?
Multiply the femtogram value by 1000000000. The converter above does this instantly to whatever precision you set.
How do I convert yoctogram back to femtogram?
Use the reverse factor: 1 yoctogram equals 1e-9 femtograms. You can also use the swap control in the converter above to flip the direction instantly.
What is a femtogram?
Femtogram (fg) is a unit of mass/weight.
What is a yoctogram?
Yoctogram (yg) is a unit of mass/weight.
Is the femtogram to yoctogram conversion exact?
Yes. Both femtogram and yoctogram are defined by fixed standards rather than physical artifacts, so the factor of 1000000000 used above is exact to as many digits as you choose to display.