Popular conversions
2 pairsSecond ↔ Hour
s ↔ h
Minute ↔ Hour
min ↔ h
Unit guides
3 unitsDetailed guide to Time
Time is one of the SI base quantities and is essential in physics, engineering, navigation and ordinary planning.
Seconds, minutes and hours are used together in many practical calculations, especially for rates, speed and process duration.
- Physical quantity
- Time
- SI base unit
- Second
- SI symbol
- s
- Dimension symbol
- T
- Typical use
- Durations, rates and schedules
What is time?
Time describes duration and the ordering of events.
It appears in speed, acceleration, frequency, energy use, production cycles and many measured rates.
Seconds, minutes and hours
The second is the SI base unit of time. Minutes and hours remain standard practical units built on exact relationships.
One minute equals 60 seconds and one hour equals 3,600 seconds.
How are time units converted?
Time conversions rely on exact multiplication or division by 60 or 3,600.
These exact factors make time conversion reliable for schedules, experiments and rate calculations.
Time units
| Unit | Symbol | Information |
|---|---|---|
| Second | s | View unit guide |
| Minute | min | View unit guide |
| Hour | h | View unit guide |
Sources
The definitions and conversion relationships on this page are aligned with standard metrology and SI reference material.