The unified atomic mass unit is used in atomic physics.
Atomic mass units to Femtograms
Convert atomic mass units (u) to femtograms (fg) instantly. Free online weight converter with formulas, tables and examples.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Length Converter
Convert metric, imperial, and nautical distance units.
Context values
Some unit families need one extra value for a physically accurate result.
Femtogram is 1e-15 gram units.
fg = u × 1.6605390666e-09
Results update instantly for Atomic mass units to Femtograms conversions.
Reserved above the conversion cards and below the converter.
Formula
fg = u × 1.6605390666e-09
u = fg ÷ 1.6605390666e-09
Conversion table
| 1 u | 1.660539e-09 fg |
| 5 u | 8.302695e-09 fg |
| 10 u | 1.660539e-08 fg |
| 20 u | 3.321078e-08 fg |
| 50 u | 8.302695e-08 fg |
| 100 u | 1.660539e-07 fg |
| 500 u | 8.302695e-07 fg |
| 1000 u | 0.000002 fg |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
What is the source unit in this conversion?
The source unit is the atomic mass unit (u). The unified atomic mass unit is used in atomic physics.
What is the destination unit in this conversion?
The destination unit is the femtogram (fg). Femtogram is 1e-15 gram units.
How do I convert atomic mass units to femtograms?
Multiply the number of atomic mass units by 1.6605390666e-09 to get the equivalent value in femtograms. For example, 5 u × 1.6605390666e-09 = 8.302695e-09 fg.
Is the atomic mass unit to femtogram conversion exact?
Yes. This converter uses a fixed factor of 1.6605390666e-09, so results are precise and consistent every time you use it.
Where is this conversion commonly used?
It's used in everyday measurement, shipping and logistics, scientific and industrial work, and any context where you need to switch between atomic mass unit and femtogram values.
Can I convert femtograms back to atomic mass units?
Yes. Multiply the femtograms value by 602214076.208, or divide it by 1.6605390666e-09, to convert back to atomic mass units.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page converts atomic mass units (u) into femtograms (fg) using the Universal Converter's mass conversion engine.
Atomic mass unit-to-Femtogram conversions are useful for everyday calculations, scientific work, shipping, and any task that mixes different weight or mass units.
The formula is fg = u × 1.6605390666e-09, based on the standard definitions of atomic mass unit and femtogram.
Because the conversion factor is fixed, results stay consistent and repeatable no matter how many times you calculate them.
Atomic mass unit: The unified atomic mass unit is used in atomic physics. Femtogram: Femtogram is 1e-15 gram units.