Nanosecond is 1e-9 second units.
Nanoseconds to Milliseconds Converter — ns to ms
Convert Nanosecond (ns) to Millisecond (ms) using the exact conversion factor (1 nanosecond = 0.000001 millisecond). See the formula, worked examples, and conversion table.
Nanoseconds to Milliseconds 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.
Millisecond is 0.001 second units.
Result = input x 1e-9 / 0.001.
Months and years use the average Gregorian year.
Reserved above the conversion cards and below the converter.
About Converting Nanoseconds to Milliseconds
Nanosecond and Millisecond 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 millisecond is 0.001 second units.
Formula
milliseconds = nanoseconds × 0.000001
This factor comes from each unit's defined relationship to the category's base unit: 1 nanosecond equals 1e-9 base units, and 1 millisecond equals 0.001 base units, so dividing one by the other gives the direct nanosecond-to-millisecond factor of 0.000001.
Simple example
1 ns × 0.000001 = 0.000001 ms
1 nanosecond = 0.000001 milliseconds.
Real-world example
24 ns × 0.000001 = 0.000024 ms
24 nanoseconds = 0.000024 milliseconds.
Conversion table
| Nanosecond (ns) | Millisecond (ms) |
|---|---|
| 1 ns | 0.000001 ms |
| 7 ns | 0.000007 ms |
| 24 ns | 0.000024 ms |
| 30 ns | 0.00003 ms |
| 100 ns | 0.0001 ms |
| 365 ns | 0.000365 ms |
Reverse conversion: Millisecond to Nanosecond
0.000001 ms × 1000000 = 1 ns
0.000001 milliseconds = 1 nanosecond.
nanoseconds = milliseconds × 1000000
For a page dedicated to this direction, see Millisecond to Nanosecond.
Understanding the Nanosecond (ns)
Nanosecond is 1e-9 second units.
Understanding the Millisecond (ms)
Millisecond is 0.001 second units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milliseconds are in 1 nanosecond?
1 nanosecond equals 0.000001 milliseconds, using the exact defined conversion factor rather than an estimate.
How do I convert nanosecond to millisecond?
Multiply the nanosecond value by 0.000001. The converter above does this instantly to whatever precision you set.
How do I convert millisecond back to nanosecond?
Use the reverse factor: 1 millisecond equals 1,000,000 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 millisecond?
Millisecond (ms) is a unit of time.
Is the nanosecond to millisecond conversion exact?
Yes. Both nanosecond and millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.000001 used above is exact to as many digits as you choose to display.