Time converter
Milliseconds to Seconds
Milliseconds and Seconds measure the same quantity in different unit systems. The relationship is 1 ms = 0.001 s, which gives 0.001 s per ms. Below you can convert any value, check a worked example and read the full chart.
Formula 1 ms = 0.001 s
Need the other direction? Seconds to Milliseconds.
How to convert Milliseconds to Seconds
A millisecond is one thousandth of a second, common in latency and timing specs. The second is the SI base unit of time, defined by the caesium hyperfine transition.
To convert Milliseconds to Seconds, multiply the value in ms by 0.001. For example, 10 ms × 0.001 = 0.01 s. This works because the ratio between the two units is constant for every value in time.
Worked examples
| ms | s |
|---|---|
| 1 ms | 0.001 s |
| 2.5 ms | 0.0025 s |
| 5 ms | 0.005 s |
| 10 ms | 0.01 s |
| 25 ms | 0.025 s |
| 50 ms | 0.05 s |
| 100 ms | 0.1 s |
Reverse conversion
| s | ms |
|---|---|
| 1 s | 1,000 ms |
| 5 s | 5,000 ms |
| 10 s | 10,000 ms |
| 25 s | 25,000 ms |
| 50 s | 50,000 ms |
| 100 s | 100,000 ms |
When this conversion is useful
This is the calculation you need when you are planning a project, a sprint or a schedule and need consistent units. Because the factor is fixed, you can use the same number for a single measurement or for a batch: 1,000 ms is 1 s.
Is the conversion exact?
Seconds, minutes, hours, days and weeks are exact. Months and years here use average Julian values (30.4375 days and 365.25 days), so a calendar conversion can differ slightly.
Reference: BIPM SI Brochure and NIST SP 811. Last reviewed: 2026-11-01.
ms to s conversion chart
The chart lists the most requested values. For a value that is not here, use the converter at the top of the page.
| Milliseconds (ms) | Seconds (s) |
|---|---|
| 1 ms | 0.001 s |
| 2 ms | 0.002 s |
| 3 ms | 0.003 s |
| 4 ms | 0.004 s |
| 5 ms | 0.005 s |
| 6 ms | 0.006 s |
| 7 ms | 0.007 s |
| 8 ms | 0.008 s |
| 9 ms | 0.009 s |
| 10 ms | 0.01 s |
| 11 ms | 0.011 s |
| 12 ms | 0.012 s |
| 13 ms | 0.013 s |
| 14 ms | 0.014 s |
| 15 ms | 0.015 s |
| 16 ms | 0.016 s |
| 17 ms | 0.017 s |
| 18 ms | 0.018 s |
| 19 ms | 0.019 s |
| 20 ms | 0.02 s |
| 21 ms | 0.021 s |
| 22 ms | 0.022 s |
| 23 ms | 0.023 s |
| 24 ms | 0.024 s |
| 25 ms | 0.025 s |
| 26 ms | 0.026 s |
| 27 ms | 0.027 s |
| 28 ms | 0.028 s |
| 29 ms | 0.029 s |
| 30 ms | 0.03 s |
| 31 ms | 0.031 s |
| 32 ms | 0.032 s |
| 33 ms | 0.033 s |
| 34 ms | 0.034 s |
| 35 ms | 0.035 s |
| 36 ms | 0.036 s |
| 37 ms | 0.037 s |
| 38 ms | 0.038 s |
| 39 ms | 0.039 s |
| 40 ms | 0.04 s |
| 41 ms | 0.041 s |
| 42 ms | 0.042 s |
| 43 ms | 0.043 s |
| 44 ms | 0.044 s |
| 45 ms | 0.045 s |
| 46 ms | 0.046 s |
| 47 ms | 0.047 s |
| 48 ms | 0.048 s |
| 49 ms | 0.049 s |
| 50 ms | 0.05 s |
| 60 ms | 0.06 s |
| 70 ms | 0.07 s |
| 80 ms | 0.08 s |
| 90 ms | 0.09 s |
| 100 ms | 0.1 s |
Frequently asked questions
How many Seconds are in 1 Milliseconds?
1 ms equals 0.001 s.
How do I convert Milliseconds to Seconds?
Multiply the ms value by 0.001. Example: 25 ms = 0.025 s.
What is 2.5 ms in s?
2.5 ms = 0.0025 s.
Is the ms to s conversion exact?
Seconds, minutes, hours, days and weeks are exact. Months and years here use average Julian values (30.4375 days and 365.25 days), so a calendar conversion can differ slightly.
Does the calculator work offline?
Yes. The conversion runs in your browser with JavaScript, so it works after the page has loaded, even without a connection.