Nanoseconds to Milliseconds Converter
Enter the time in nanoseconds below to convert it to milliseconds.
Convert Nanoseconds to Milliseconds
Enter a value in nanoseconds (ns) to convert to milliseconds (ms).
Nanosecond to Millisecond Conversion Table
Table showing various nanosecond measurements converted to milliseconds. Click any preset value or arrow to load it into the converter.
| Nanoseconds (ns) | Milliseconds (ms) |
|---|---|
| 1 ns | 0.000001 ms |
| 10 ns | 0.00001 ms |
| 100 ns | 0.0001 ms |
| 1,000 ns | 0.001 ms |
| 10,000 ns | 0.01 ms |
| 100,000 ns | 0.1 ms |
| 1,000,000 ns | 1 ms |
| 5,000,000 ns | 5 ms |
| 10,000,000 ns | 10 ms |
| 25,400,000 ns | 25.4 ms |
How to Convert Nanoseconds to Milliseconds
To convert nanoseconds to milliseconds, multiply the time by the following conversion ratio: 0.000001 milliseconds/nanosecond.
Since one nanosecond is equal to 0.000001 milliseconds, you can use this simple formula to convert:
The time in milliseconds is equal to the time in nanoseconds multiplied by 0.000001.
For example, here's how to convert 5 nanoseconds to milliseconds using the formula above.
How Many Milliseconds Are in a Nanosecond?
There are 0.000001 milliseconds in a nanosecond, which is why we use this value in the formula above.
Our nanosecond to millisecond calculator automatically converts your time measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Nanoseconds and milliseconds 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 Millisecond?
A millisecond is a unit of time equal to 1/1,000 of a second (0.001 s). One-thousandth of a second (10⁻³ s). [2]
The millisecond is classified as a metric and SI-compatible unit of time. Milliseconds can be abbreviated as ms; for example, 1 millisecond can be written as 1 ms.
In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the millisecond (ms) a convenient decimal multiple of the second (s).
In practice, milliseconds (ms) 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 milliseconds (ms), keep full floating-point precision (1 ns = 0.000001 ms; 1 ms = 1,000,000 ns) during intermediate calculations and round only the final millisecond figure to match your instrument tolerance.
More Nanosecond & Millisecond Conversions
Need to calculate in the opposite direction? Use our milliseconds to nanoseconds calculator to switch your starting unit immediately. You can also explore related tools such as converting milliseconds to nanoseconds, converting seconds to milliseconds, or converting seconds to minutes.
Convert from Nanoseconds
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Time)·Time Metrology Standard — Nanoseconds (ns) to Milliseconds (ms)
- [2]BIPM SpecificationBIPM (SI Base Unit: Second (s))·Unit Specifications: Nanosecond (ns) & Millisecond (ms)
- [3]NIST CUU ReferenceNIST CUU (Non-SI Units Accepted for Use (min, h, d))·Conversion Factors & Mathematical Basis (ns to ms)