Femtohertz is 1e-15 hertz units.
Femtohertz to Attohertz Converter — fHz to aHz
Convert Femtohertz (fHz) to Attohertz (aHz) using the exact conversion factor (1 femtohertz = 1,000 attohertz). See the formula, worked examples, and conversion table.
Femtohertz to Attohertz converter
Converter
Scientific Units Converter
Convert SI derived units, scientific notation-friendly units, atomic units, and lab measurements.
Context values
Some unit families need one extra value for a physically accurate result.
Attohertz is 1e-18 hertz units.
Result = input x 1e-15 / 1e-18.
Frequency units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Femtohertz to Attohertz
Femtohertz and Attohertz are both scientific-measurement units, spanning everything from atomic and laboratory scales to astronomical distances — the kind of conversion that comes up constantly in physics, chemistry, and astronomy when a result needs to move between conventions used in different subfields. Specifically: Femtohertz is 1e-15 hertz units, and attohertz is 1e-18 hertz units.
Formula
attohertz = femtohertz × 1000
This factor comes from each unit's defined relationship to the category's base unit: 1 femtohertz equals 1e-15 base units, and 1 attohertz equals 1e-18 base units, so dividing one by the other gives the direct femtohertz-to-attohertz factor of 1000.
Simple example
1 fHz × 1000 = 1,000 aHz
1 femtohertz = 1,000 attohertz.
Real-world example
10 fHz × 1000 = 10,000 aHz
10 femtohertz = 10,000 attohertz.
Conversion table
| Femtohertz (fHz) | Attohertz (aHz) |
|---|---|
| 0.001 fHz | 1 aHz |
| 0.01 fHz | 10 aHz |
| 1 fHz | 1,000 aHz |
| 10 fHz | 10,000 aHz |
| 100 fHz | 100,000 aHz |
| 1,000 fHz | 1,000,000 aHz |
Reverse conversion: Attohertz to Femtohertz
1 aHz × 0.001 = 0.001 fHz
1 attohertz = 0.001 femtohertz.
femtohertz = attohertz × 0.001
For a page dedicated to this direction, see Attohertz to Femtohertz.
Understanding the Femtohertz (fHz)
Femtohertz is 1e-15 hertz units.
Understanding the Attohertz (aHz)
Attohertz is 1e-18 hertz units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many attohertz are in 1 femtohertz?
1 femtohertz equals 1,000 attohertz, using the exact defined conversion factor rather than an estimate.
How do I convert femtohertz to attohertz?
Multiply the femtohertz value by 1000. The converter above does this instantly to whatever precision you set.
How do I convert attohertz back to femtohertz?
Use the reverse factor: 1 attohertz equals 0.001 femtohertz. You can also use the swap control in the converter above to flip the direction instantly.
What is a femtohertz?
Femtohertz (fHz) is a unit of scientific units.
What is a attohertz?
Attohertz (aHz) is a unit of scientific units.
Is the femtohertz to attohertz conversion exact?
Yes. Both femtohertz and attohertz are defined by fixed standards rather than physical artifacts, so the factor of 1000 used above is exact to as many digits as you choose to display.
Why does this category span everything from atomic to astronomical scales?
Scientific work spans an enormous range of physical scales, from atomic distances (measured in angstroms or atomic mass units) to interstellar distances (measured in astronomical units or parsecs), so this category groups SI-derived and scale-specific units that researchers commonly need to convert between within their field.