Sidereal Day to Week Converter

Time Converter

21 units available

Decimals:

From

To

0.142467

1 sid day = 0.142467 wk

Formula:

wk = sid day × 0.1424670809

With your value: 1 sid day = 0.14246708 wk

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 Week conversions

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

Sidereal Day to Week Conversion Table

Sidereal Day (sid day)	Week (wk)
0.5	0.071234
1	0.142467
2	0.284934
5	0.712335
10	1.424671
15	2.137006
20	2.849342
25	3.561677
50	7.123354
100	14.246708
250	35.61677
500	71.23354
1000	142.467081

Week to Sidereal Day Conversion Table

Week (wk)	Sidereal Day (sid day)
0.5	3.509583
1	7.019165
2	14.038331
5	35.095827
10	70.191654
15	105.287481
20	140.383307
25	175.479134
50	350.958268
100	701.916537
250	1,754.791342
500	3,509.582684
1000	7,019.165368

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

Week (wk)

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 Week

To convert from Sidereal Day (sid day) to Week (wk), multiply the value by 0.1424670809.

Formula: wk = sid day × 0.1424670809

Reverse: sid day = wk × 7.019165368

Step-by-Step Example

Start with your value in Sidereal Day. For example: 5 sid day
Multiply by the conversion factor: 5 x 0.1424670809
The result is: 0.712335 wk

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 Week

The week (wk) is a unit of time. One week equals 604800 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 Week are in 1 Sidereal Day?

There are exactly 0.1424670809 Week in 1 Sidereal Day. This means the conversion factor from Sidereal Day to Week is 0.1424670809.

What is the formula to convert Sidereal Day to Week?

The formula to convert Sidereal Day to Week is: wk = sid day × 0.1424670809. For example, to convert 10 Sidereal Day to Week, you would multiply 10 by 0.1424670809.

What is a Sidereal Day?