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Time

Just how long is 100 milliseconds?

A duration of 100 milliseconds is 0.1 seconds.

In a blink

100 ms

Scale

ELAPSED TIME

100 milliseconds

Time conversions use a Julian year of exactly 365.25 days.

100 msTime
0
Blink of an eye

A blink of an eye is the quick closing and opening of the eyelid, usually happening involuntarily.

150 msTime
0
Both timelines start together. Length measures elapsed time, not a physical distance.

A little perspective

The duration of a blink of an eye is about 1.5 times 100 milliseconds.

Measurements, assumptions & sources +

100 milliseconds

Time: 100 ms; definition.

Time conversions use a Julian year of exactly 365.25 days.

NIST — SI conversion factors

Blink of an eye

Time: 150 ms; reference interval.

A chosen 150 ms interval, not a universal blink duration.

Defined examples — our methodology

The marked time is calibrated. Unmeasured illustration details are representative.

Measurement details

Why these numbers?

Compare 100 milliseconds with the duration of a blink of an eye. The notes below explain how each value was chosen.

100 milliseconds

100 ms

Time · definition

Time conversions use a Julian year of exactly 365.25 days.

Blink of an eye

150 ms

Time · reference interval

A chosen 150 ms interval, not a universal blink duration.

Comparing
Time ↔ Time
Relative size
The duration of a blink of an eye is about 1.5 times 100 milliseconds. The duration of a blink of an eye is approximately 50% greater than 100 milliseconds.

How to read the visual

The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.

  • The duration of a blink of an eye: The measurement is labelled reference interval. Check the source notes for its basis.

A duration is an interval, not a calendar date.

0.1 sseconds
2.7778 × 10⁻⁵ hhours
1.1574 × 10⁻⁶ daysdays
3.1688 × 10⁻⁹ yearsyears

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