Planck Time to Sidereal Day Converter

Time Converter

21 units available

Decimals:

From

To

6.256852e-49

1 tP = 6.256852e-49 sid day

Formula:

sid day = tP × 6.256852e-49

With your value: 1 tP = 6.256852e-49 sid day

How big is that?

Everyday references on a logarithmic scale, all expressed in planck time so you can sanity-check the result.

Your value1.00 tP

Blink of an eye (5.6e+42× your value)5.56e+42 tP

Minute (1.1e+45× your value)1.11e+45 tP

Working day (5.3e+47× your value)5.34e+47 tP

Day (1.6e+48× your value)1.60e+48 tP

Week (1.1e+49× your value)1.12e+49 tP

Other Planck Time to Sidereal Day conversions

2 tP to sid day 3 tP to sid day 4 tP to sid day 5 tP to sid day 6 tP to sid day 7 tP to sid day 8 tP to sid day

Planck Time to Sidereal Day Conversion Table

Planck Time (tP)	Sidereal Day (sid day)
0.5	3.128426e-49
1	6.256852e-49
2	1.251370e-48
5	3.128426e-48
10	6.256852e-48
15	9.385279e-48
20	1.251370e-47
25	1.564213e-47
50	3.128426e-47
100	6.256852e-47
250	1.564213e-46
500	3.128426e-46
1000	6.256852e-46

Sidereal Day to Planck Time Conversion Table

Sidereal Day (sid day)	Planck Time (tP)
0.5	7.991238e+47
1	1.598248e+48
2	3.196495e+48
5	7.991238e+48
10	1.598248e+49
15	2.397372e+49
20	3.196495e+49
25	3.995619e+49
50	7.991238e+49
100	1.598248e+50
250	3.995619e+50
500	7.991238e+50
1000	1.598248e+51

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Planck Time (tP)

Time

SI definition

Traceable to the second, defined by fixing the caesium-133 hyperfine transition frequency at 9 192 631 770 Hz.

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

Sidereal Day (sid day)

Time

SI definition

Traceable to the second, defined by fixing the caesium-133 hyperfine transition frequency at 9 192 631 770 Hz.

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

How to Convert Planck Time to Sidereal Day

To convert from Planck Time (tP) to Sidereal Day (sid day), multiply the value by 6.256852e-49.

Formula: sid day = tP × 6.256852e-49

Reverse: tP = sid day × 1.598248e+48

Step-by-Step Example

Start with your value in Planck Time. For example: 5 tP
Multiply by the conversion factor: 5 x 6.256852e-49
The result is: 3.128426e-48 sid day

About Planck Time

The planck time (tP) is a unit of time. One planck time equals 5.391160 × 10^-44 seconds. UnitConvertLab converts it against every other time unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: time calculations, engineering and science, education.

About Sidereal Day

The sidereal day (sid day) is a unit of time. One sidereal day equals 86164.0905 seconds. UnitConvertLab converts it against every other time unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: time calculations, engineering and science, education.

Frequently Asked Questions

How many Sidereal Day are in 1 Planck Time?

There are exactly 6.256852e-49 Sidereal Day in 1 Planck Time. This means the conversion factor from Planck Time to Sidereal Day is 6.256852e-49.

What is the formula to convert Planck Time to Sidereal Day?

The formula to convert Planck Time to Sidereal Day is: sid day = tP × 6.256852e-49. For example, to convert 10 Planck Time to Sidereal Day, you would multiply 10 by 6.256852e-49.

What is a Planck Time?