How to convert millisecond to second
Multiply the millisecond value by 0.001. The converter uses a fixed unit ratio, so the same formula applies to positive, negative and decimal values.
1 ms = 0.001 s. In the other direction, 1 s = 1000 ms.
Millisecond to Second Converter
Convert millisecond (ms) to second (s) instantly with a free browser-based time converter.
Free to useNo account requiredRuns in your browser
0.001 s
1 ms = 0.001 s
The calculation happens locally in your browser.
Assumptions & limitations
This is a time conversion between standardized unit definitions. Very large or very small numbers may be shown in scientific notation because browser calculations use floating-point arithmetic.
No input is sent to this website by the converter. For regulated engineering, laboratory, billing or legal work, verify the required standard and rounding rules for your use case.
Common questions
What is the conversion factor?
One millisecond equals 0.001 second.
Can I enter decimals?
Yes. The input accepts decimal and negative values as well as whole numbers.
Does the tool upload my value?
No. The calculation is performed in your browser.
Keep converting
Browse the converter directory for other time and digital unit conversions.