Petahertz is 1000000000000000 hertz units.
Petahertz to Nanohertz Converter — PHz to nHz
Convert Petahertz (PHz) to Nanohertz (nHz) using the exact conversion factor (1 petahertz = 1e+24 nanohertz). See the formula, worked examples, and conversion table.
Petahertz to Nanohertz 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.
Nanohertz is 1e-9 hertz units.
Result = input x 1e+15 / 1e-9.
Frequency units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Petahertz to Nanohertz
Petahertz and Nanohertz 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: Petahertz is 1000000000000000 hertz units, and nanohertz is 1e-9 hertz units.
Formula
nanohertz = petahertz × 1e+24
This factor comes from each unit's defined relationship to the category's base unit: 1 petahertz equals 1e+15 base units, and 1 nanohertz equals 1e-9 base units, so dividing one by the other gives the direct petahertz-to-nanohertz factor of 1e+24.
Simple example
1 PHz × 1e+24 = 1e+24 nHz
1 petahertz = 1e+24 nanohertz.
Real-world example
10 PHz × 1e+24 = 1e+25 nHz
10 petahertz = 1e+25 nanohertz.
Conversion table
| Petahertz (PHz) | Nanohertz (nHz) |
|---|---|
| 0.001 PHz | 1e+21 nHz |
| 0.01 PHz | 1e+22 nHz |
| 1 PHz | 1e+24 nHz |
| 10 PHz | 1e+25 nHz |
| 100 PHz | 1e+26 nHz |
| 1,000 PHz | 1e+27 nHz |
Reverse conversion: Nanohertz to Petahertz
1e+24 nHz × 1e-24 = 1 PHz
1e+24 nanohertz = 1 petahertz.
petahertz = nanohertz × 1e-24
For a page dedicated to this direction, see Nanohertz to Petahertz.
Understanding the Petahertz (PHz)
Petahertz is 1000000000000000 hertz units.
Understanding the Nanohertz (nHz)
Nanohertz is 1e-9 hertz units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many nanohertz are in 1 petahertz?
1 petahertz equals 1e+24 nanohertz, using the exact defined conversion factor rather than an estimate.
How do I convert petahertz to nanohertz?
Multiply the petahertz value by 1e+24. The converter above does this instantly to whatever precision you set.
How do I convert nanohertz back to petahertz?
Use the reverse factor: 1 nanohertz equals 1e-24 petahertz. You can also use the swap control in the converter above to flip the direction instantly.
What is a petahertz?
Petahertz (PHz) is a unit of scientific units.
What is a nanohertz?
Nanohertz (nHz) is a unit of scientific units.
Is the petahertz to nanohertz conversion exact?
Yes. Both petahertz and nanohertz are defined by fixed standards rather than physical artifacts, so the factor of 1e+24 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.