What is the standard SI base or derived unit for time?

In the International System of Units (SI), time is quantified relative to fundamental physical standards defined by BIPM. UnitGlide references these exact metric constants for all calculations.

How many time units can I convert on UnitGlide?

UnitGlide currently supports 33 different time units, including SI metric, British Imperial, US Customary, and scientific standard units.

How do I convert between different time units?

Enter your known value into the 'Convert from' field, choose your starting unit, and select your target unit. UnitGlide computes the answer instantly using 12-digit floating point arithmetic.

Time Converter

Convert time units including second, millisecond, minute, hour, day and many more time units instantly and accurately.

From

10000

10 seconds (s) = 10000 milliseconds (ms)

Decimal places:

Formula:

ms = s × 1000

Popular Time Conversions

Quick access to the most commonly used time conversions.

About Time Units

Free online time converter - converts between 34 units of time, including second [s], millisecond [ms], minute [min], hour [h], etc. Also, explore many other unit converters or learn more about time unit conversions. Different unit systems are used worldwide, including the Metric System (SI) and the Imperial / US Customary System.

Metric System (SI)

The metric system is the most widely adopted international measurement standard. The base unit is the second.

Imperial System (US)

The imperial system is commonly used in the United States and specialized international industries including aviation and maritime navigation.

Common Time Units

Here are some of the most common time units and their abbreviations.

Unit	Symbol	Type	In Second
Second	s	Metric (base)	1 s
Millisecond	ms	Metric	0.001 s
Minute	min	Standard	60 s
Hour	h	Standard	3600 s
Day	d	Standard	86400 s
Week	—	Standard	604800 s
Month	—	Standard	2628000 s
Year	y	Standard	31557600 s
Decade	—	Standard	315576000 s
Century	—	Standard	3155760000 s