What is microsecond?
A microsecond is a unit of time equal to one millionth of a second. It is used in electronics, radar systems, telecommunications, and measuring the speed of high-frequency processes.
Real-world uses
Microseconds are used to measure CPU instruction execution times, radar pulse durations, and ultrasonic echo intervals. High-frequency trading systems operate on microsecond timescales, and camera flash durations are typically 1–1,000 µs.
History
The microsecond became measurable with the development of oscilloscopes and electronic timing circuits in the early 20th century. The prefix "micro-" was adopted from Greek and formally standardized as an SI prefix in 1960.
Common mistakes
Using "us" instead of "µs" as the symbol, which can cause confusion with the word "us" in text. Also, conflating microseconds with milliseconds in performance benchmarks, leading to 1000x reporting errors.
What is century (100 yr)?
A century is a unit of time equal to 100 years. It is used in historical analysis, long-term demographic and climate projections, and describing spans of civilizational or geological time.
Real-world uses
Centuries are used in historical periodization (e.g., "the 19th century"), long-term climate modelling, geological timeframes, and demographic trend analysis. Architectural preservation classifies buildings by the century of their construction.
History
The word "century" comes from the Latin "centuria," meaning a group of one hundred, used by the Romans for military units of approximately 100 soldiers. Its application to 100-year periods became common in European historical writing.
Common mistakes
The most common error is off-by-one: the 21st century began on January 1, 2001, not 2000, because there was no year zero. Also, confusing centuries with millennia (1,000 years) in historical discussions.
When is this conversion used?
Converting microsecond to century (100 yr) is useful in the time domain when comparing values across different measurement standards or applying formulas that require a specific unit.
Worked examples
1 microsecond = 3.170979e-16 century (100 yr)
1 century (100 yr) = 3.153600e+09 second
How to convert microsecond to century (100 yr)
To convert microsecond to century (100 yr), multiply the value by 3.170979e-16.
To convert century (100 yr) back to microsecond, multiply by 3.153600e+15.
Measurement standards
The SI second is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the caesium-133 atom, maintained by the BIPM and national metrology institutes worldwide.
Did you know?
Earth's rotation is gradually slowing due to tidal friction with the Moon. To keep atomic time aligned with solar time, "leap seconds" have been inserted 27 times since 1972 — though they are scheduled to be abolished by 2035.
Quick reference: microsecond to century (100 yr)
| microsecond | century (100 yr) |
|---|---|
| 0.1 | 3.170979e-17 |
| 0.5 | 1.585490e-16 |
| 1 | 3.170979e-16 |
| 2 | 6.341958e-16 |
| 5 | 1.585490e-15 |
| 10 | 3.170979e-15 |
| 25 | 7.927448e-15 |
| 50 | 1.585490e-14 |
| 100 | 3.170979e-14 |
| 250 | 7.927448e-14 |
| 500 | 1.585490e-13 |
| 1,000 | 3.170979e-13 |
Common values
| microsecond | century (100 yr) | |
|---|---|---|
| Blink of an eye | 300,000 microsecond | 9.512938e-11 century (100 yr) |
| Average pop song | 210,000,000 microsecond | 6.659056e-08 century (100 yr) |
| Feature film | 7.200000e+09 microsecond | 0.00000228 century (100 yr) |
| One work day (8 hrs) | 2.880000e+10 microsecond | 0.00000913 century (100 yr) |
| One calendar year | 3.153600e+13 microsecond | 0.01 century (100 yr) |
Available Time units
More microsecond conversions
- Convert microsecond to second
- Convert microsecond to minute
- Convert microsecond to hour
- Convert microsecond to day
- Convert microsecond to week
- Convert microsecond to year (365 d)
- Convert microsecond to millisecond
- Convert microsecond to nanosecond
- Convert microsecond to century (100 yr)
Assumption: year is defined as 365 days and century values are approximate.