Nanosecond is 1e-9 second units.
Nanoseconds to Femtoseconds Converter — ns to fs
Convert Nanosecond (ns) to Femtosecond (fs) using the exact conversion factor (1 nanosecond = 1,000,000 femtosecond). See the formula, worked examples, and conversion table.
Nanoseconds to Femtoseconds converter
Converter
Time Converter
Convert SI time, civil time, historical durations, months, and years.
Context values
Some unit families need one extra value for a physically accurate result.
Femtosecond is 1e-15 second units.
Result = input x 1e-9 / 1e-15.
Months and years use the average Gregorian year.
Reserved above the conversion cards and below the converter.
About Converting Nanoseconds to Femtoseconds
Nanosecond and Femtosecond are both everyday units of duration, and converting between them is one of the most routine calculations there is — scheduling, project planning, and billing all depend on it. Specifically: Nanosecond is 1e-9 second units, and femtosecond is 1e-15 second units.
Formula
femtoseconds = nanoseconds × 1000000
This factor comes from each unit's defined relationship to the category's base unit: 1 nanosecond equals 1e-9 base units, and 1 femtosecond equals 1e-15 base units, so dividing one by the other gives the direct nanosecond-to-femtosecond factor of 1000000.
Simple example
1 ns × 1000000 = 1,000,000 fs
1 nanosecond = 1,000,000 femtoseconds.
Real-world example
24 ns × 1000000 = 24,000,000 fs
24 nanoseconds = 24,000,000 femtoseconds.
Conversion table
| Nanosecond (ns) | Femtosecond (fs) |
|---|---|
| 1 ns | 1,000,000 fs |
| 7 ns | 7,000,000 fs |
| 24 ns | 24,000,000 fs |
| 30 ns | 30,000,000 fs |
| 100 ns | 100,000,000 fs |
| 365 ns | 365,000,000 fs |
Reverse conversion: Femtosecond to Nanosecond
1 fs × 0.000001 = 0.000001 ns
1 femtosecond = 0.000001 nanoseconds.
nanoseconds = femtoseconds × 0.000001
For a page dedicated to this direction, see Femtosecond to Nanosecond.
Understanding the Nanosecond (ns)
Nanosecond is 1e-9 second units.
Understanding the Femtosecond (fs)
Femtosecond is 1e-15 second units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many femtoseconds are in 1 nanosecond?
1 nanosecond equals 1,000,000 femtoseconds, using the exact defined conversion factor rather than an estimate.
How do I convert nanosecond to femtosecond?
Multiply the nanosecond value by 1000000. The converter above does this instantly to whatever precision you set.
How do I convert femtosecond back to nanosecond?
Use the reverse factor: 1 femtosecond equals 0.000001 nanoseconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a nanosecond?
Nanosecond (ns) is a unit of time.
What is a femtosecond?
Femtosecond (fs) is a unit of time.
Is the nanosecond to femtosecond conversion exact?
Yes. Both nanosecond and femtosecond are defined by fixed standards rather than physical artifacts, so the factor of 1000000 used above is exact to as many digits as you choose to display.