Sidereal Day to Planck Time Converter

Time Converter

21 units available

Decimals:

From

To

1.598248e+48

1 sid day = 1.598248e+48 tP

Formula:

tP = sid day × 1.598248e+48

With your value: 1 sid day = 1.598248e+48 tP

How big is that?

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

Minute (1/1.4e+3 your value)0.000696 sid day

Working day (1/3.0 your value)0.334 sid day

Your value1.00 sid day

Day (1.0× your value)1.00 sid day

Week (7.0× your value)7.02 sid day

Year (3.7e+2× your value)366 sid day

Other Sidereal Day to Planck Time conversions

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

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

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

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.

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

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

How to Convert Sidereal Day to Planck Time

To convert from Sidereal Day (sid day) to Planck Time (tP), multiply the value by 1.598248e+48.

Formula: tP = sid day × 1.598248e+48

Reverse: sid day = tP × 6.256852e-49

Step-by-Step Example

Start with your value in Sidereal Day. For example: 5 sid day
Multiply by the conversion factor: 5 x 1.598248e+48
The result is: 7.991238e+48 tP

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.

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.

Frequently Asked Questions

How many Planck Time are in 1 Sidereal Day?

There are exactly 1.598248e+48 Planck Time in 1 Sidereal Day. This means the conversion factor from Sidereal Day to Planck Time is 1.598248e+48.

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

The formula to convert Sidereal Day to Planck Time is: tP = sid day × 1.598248e+48. For example, to convert 10 Sidereal Day to Planck Time, you would multiply 10 by 1.598248e+48.

What is a Sidereal Day?