Planck Time to Second Conversion Calculator: Free Online Tool

Convert Planck times to seconds with our free online time converter.

From:

Planck Time

To:

Second

How to Use the Calculator:

Enter the value you want to convert in the 'From' field (Planck Time).
The converted value in Second will appear automatically in the 'To' field.
Use the dropdown menus to select different units within the Time category.
Click the swap button (⇌) to reverse the conversion direction.

How to Convert Planck Time to Second

Converting Planck Time to Second involves multiplying the value by a specific conversion factor, as shown in the formula below.

Formula:

1 Planck Time = 5.3910e-44 seconds

Example Calculation:

Convert 60 Planck times: 60 × 5.3910e-44 = 3.2346e-42 seconds

Disclaimer: For Reference Only

These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.

Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.

What is a Planck Time and a Second?

The Planck time (tP) is the unit of time in the system of natural units known as Planck units. It is defined as the time it takes for light to travel a distance of one Planck length in a vacuum, approximately 5.39 × 10⁻⁴⁴ seconds. It represents the timescale below which the known laws of physics, including general relativity and quantum mechanics, are thought to break down.

The second is the base unit of time in the International System of Units (SI). It is defined by taking the fixed numerical value of the caesium frequency ΔνCs, the unperturbed ground-state hyperfine transition frequency of the caesium-133 atom, to be 9,192,631,770 when expressed in the unit Hz, which is equal to s⁻¹.

Note: The Planck Time is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Second belongs to the imperial/US customary system.

History of the Planck Time and Second

The concept of Planck units, including Planck time, was first proposed by German physicist Max Planck around 1899-1900. He sought to define units based solely on fundamental physical constants, independent of human constructs. Planck time is derived from the speed of light in a vacuum (c), the gravitational constant (G), and the reduced Planck constant (ħ). It represents a fundamental timescale inherent to the universe's properties, particularly where quantum effects of gravity become significant.

Historically, the second was defined as 1/86,400 of a mean solar day. However, variations in the Earth's rotation led to the need for a more precise, constant definition. The atomic definition based on the caesium-133 atom was adopted in 1967.

Common Uses for Planck times and seconds

Explore the typical applications for both Planck Time (imperial/US) and Second (imperial/US) to understand their common contexts.

Common Uses for Planck times

Planck time is not used for any practical, everyday measurements due to its incredibly small magnitude. Its significance is purely theoretical:

Theoretical Physics: Used as a fundamental unit in theories attempting to unify gravity with quantum mechanics (quantum gravity).
Cosmology: Relevant in describing the very earliest moments of the universe immediately after the Big Bang, known as the Planck epoch, before which current physical theories are inapplicable.
Black Hole Physics: Used in theoretical discussions about the singularity and quantum effects near black holes.
Fundamental Limits: Represents the shortest theoretically meaningful interval of time according to current understanding of physics.

Common Uses for seconds

Base Unit: The fundamental unit for all time measurements in science, engineering, and daily life.
Timing: Used universally for clocks, watches, timers, and scheduling.
Physics: Essential in defining derived units like velocity (meters per second), acceleration (meters per second squared), frequency (Hertz, or cycles per second), and force (Newtons).
Computing: Used as a base for measuring intervals, timeouts, and durations, although often subdivided into milliseconds, microseconds, or nanoseconds for finer measurements.
Everyday Life: Counting heartbeats, measuring short durations, coordinating activities.

Frequently Asked Questions

Questions About Planck Time (tP)

What is the value of Planck time in seconds?

Planck time (tP) is approximately 5.391 × 10⁻⁴⁴ seconds.

Is Planck time the absolute shortest possible time?

It's considered the shortest meaningful time interval according to current physical theories. Below this scale, the concepts of space and time as we understand them are expected to break down, requiring a theory of quantum gravity for description. It's not necessarily the "shortest possible" time, but rather the limit of our current models.

Can we measure Planck time directly?

No, Planck time is far too short to be measured with any current or foreseeable technology. Its existence and value are derived theoretically from fundamental constants.

About Second (s)

What is the base unit of time in the SI system?

The second (s) is the base unit of time.

Why is the second defined using atoms?

The atomic definition provides a much more stable and precise standard than relying on the Earth's rotation, which fluctuates slightly.

How many seconds are in a minute?

There are 60 seconds in a minute.

How many seconds are in an hour?

There are 3,600 seconds in an hour (60 seconds/minute * 60 minutes/hour).

Conversion Table: Planck Time to Second

Planck Time (tP)	Second (s)
1	0
5	0
10	0
25	0
50	0
100	0
500	0
1,000	0

All Time Conversions

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