Nanoseconds to Femtoseconds Converter
Enter the time in nanoseconds below to convert it to femtoseconds.
Convert Nanoseconds to Femtoseconds
Enter a value in nanoseconds (ns) to convert to femtoseconds (fs).
Nanosecond to Femtosecond Conversion Table
Table showing various nanosecond measurements converted to femtoseconds. Click any preset value or arrow to load it into the converter.
How to Convert Nanoseconds to Femtoseconds
To convert nanoseconds to femtoseconds, multiply the time by the following conversion ratio: 1,000,000 femtoseconds/nanosecond.
Since one nanosecond is equal to 1,000,000 femtoseconds, you can use this simple formula to convert:
The time in femtoseconds is equal to the time in nanoseconds multiplied by 1,000,000.
For example, here's how to convert 5 nanoseconds to femtoseconds using the formula above.
How Many Femtoseconds Are in a Nanosecond?
There are 1,000,000 femtoseconds in a nanosecond, which is why we use this value in the formula above.
Our nanosecond to femtosecond calculator automatically converts your time measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Nanoseconds and femtoseconds are both units used to measure time. Keep reading to learn more about each unit.
What Is a Nanosecond?
A nanosecond is a unit of time equal to 1/1,000,000,000 of a second (1e-9 s). One-billionth of a second (10⁻⁹ s), used in RAM and CPU clock cycles. [1]
The nanosecond is classified as a metric and SI-compatible unit of time. Nanoseconds can be abbreviated as ns; for example, 1 nanosecond can be written as 1 ns.
In the metric system, "nano" is the standard SI prefix for billionths, or 10⁻⁹. This makes the nanosecond (ns) a convenient decimal multiple of the second (s).
In practice, nanoseconds (ns) are widely used across fine-tolerance laboratory, analytical, and micro-scale time measurements within SI metric workflows, engineering documentation, and technical data sheets.
What Is a Femtosecond?
A femtosecond is a unit of time equal to 1e-15 seconds (s), the base unit for time. One-quadrillionth of a second (10⁻¹⁵ s), used in ultrafast laser physics. [2]
The femtosecond is classified as a metric and SI-compatible unit of time. Femtoseconds can be abbreviated as fs; for example, 1 femtosecond can be written as 1 fs.
In the metric system, "femto" is the standard SI prefix for quadrillionths, or 10⁻¹⁵. This makes the femtosecond (fs) a convenient decimal multiple of the second (s).
In practice, femtoseconds (fs) are widely used across fine-tolerance laboratory, analytical, and micro-scale time measurements within SI metric workflows, engineering documentation, and technical data sheets.
When converting time between nanoseconds (ns) and femtoseconds (fs), keep full floating-point precision (1 ns = 1,000,000 fs; 1 fs = 0.000001 ns) during intermediate calculations and round only the final femtosecond figure to match your instrument tolerance.
More Nanosecond & Femtosecond Conversions
Need to calculate in the opposite direction? Use our femtoseconds to nanoseconds calculator to switch your starting unit immediately. You can also explore related tools such as converting femtoseconds to nanoseconds, converting seconds to minutes, or converting seconds to milliseconds.
Convert from Nanoseconds
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Time)·Time Metrology Standard — Nanoseconds (ns) to Femtoseconds (fs)
- [2]BIPM SpecificationBIPM (SI Base Unit: Second (s))·Unit Specifications: Nanosecond (ns) & Femtosecond (fs)
- [3]NIST CUU ReferenceNIST CUU (Non-SI Units Accepted for Use (min, h, d))·Conversion Factors & Mathematical Basis (ns to fs)