second, minute, hour, day, week, fortnight, month, year, decade, century, millennium.
The SI unit is the second.
seconds
seconds
The SI unit of time is the "second".
A second.
A second is a measure of time, or a unit of time.
The base unit for time is the second.
second
the 'second'
The second.
Unit for time is a second.There are various instruments to measure temperature: a thermometer, a thermocouple are two.
You can't just convert any unit into any other unit. The units must be compatible - measure the same type of thing. For example, you can convert a unit of length to another unit of length, or a unit of time to another unit of time. An atmosphere is a measure of pressure, a foot is a measure of length, so you can't convert it.