Time Unit Converter
Convert between all time units - from nanoseconds to centuries with precision
Universal Time Converter
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0 μs
0 ms
0 s
0 min
0 h
0 d
0 w
0 mo
0 y
0 dec
0 cent
Conversion Results
Enter a value in any time unit to see conversions to all other units
Common Time Conversions
1 second equals:
1 minute equals:
1 hour equals:
1 day equals:
1 week equals:
1 year equals:
Time Scale Reference
• Microsecond: 1 millionth of a second
• Millisecond: 1 thousandth of a second
• Minute: 60 seconds
• Hour: 3,600 seconds
• Year: 31,557,600 seconds
• Century: 3.16 billion seconds
Key Relationships
Conversion Tips
All conversions use seconds as the base unit for accuracy
Year = 365.25 days (accounts for leap years)
Month = 30.44 days (average month length)
Very large/small numbers shown in scientific notation
Precision maintained for scientific calculations
Understanding Time Units
SI Base Unit: Second
The second is the fundamental unit of time in the International System of Units (SI). It's defined as the duration of 9,192,631,770 periods of radiation corresponding to the transition between two hyperfine levels of the ground state of the cesium-133 atom.
Historical Context
- •Originally based on Earth's rotation (1 day = 86,400 seconds)
- •Now defined by atomic standards for precision
- •Millisecond timing crucial in modern computing
Conversion Method
Step-by-step Process:
- Convert input value to seconds using conversion factor
- Convert seconds to all other units
- Apply appropriate precision for display
- Use scientific notation for very large/small values
Practical Applications
- •Scientific research and data analysis
- •Engineering and technical calculations
- •Project planning and scheduling
- •Computer programming and performance optimization
Time in Perspective
Light Speed:
Light travels ~300,000 km in 1 second
Human Lifespan:
~2.5 billion seconds in 80 years
Universe Age:
~4.3 × 10¹⁷ seconds old