Calculate total working hours, days, or hours per day from any two inputs, with days or weeks and hour, minute, or second units supported.

The8-hour day and5-day week are editable planning assumptions. Calendar-span estimates average your workweek across7days; they do not count actual weekends or holidays.

Changing this selection reinterprets the entered number.

Default8h/day; edit for your schedule. One personโ€™s day is capped at24hours.

Days To Working Hours Formula

The following formula is used to calculate the total number of working hours within a given number of days.

WH = D ร— H

Variables:

  • WH is the total number of working hours
  • D is the number of working days
  • H is working hours per day (the editable default is 8)

Multiply working days by working hours per day. For working weeks, first multiply by your working days per week. Calendar-span mode uses an average workweek ratio and does not count actual weekends or holidays.

Days to Working Hours Conversion Table (Assuming 8 h/day)
Days (d) Working Hours (h) Minutes (min) Seconds (sec)
ยผ2.001207200
โ…“2.671609600
ยฝ4.0024014400
โ…”5.3332019200
ยพ6.0036021600
18.0048028800
1ยผ10.0060036000
1ยฝ12.0072043200
1ยพ14.0084050400
216.0096057600
2ยฝ20.00120072000
324.00144086400
432.001920115200
540.002400144000
756.003360201600
1080.004800288000
14112.006720403200
15120.007200432000
20160.009600576000
30240.0014400864000
* Hours rounded to 2 decimals. Assumes an 8-hour workday. 1 day ร— 8 h/day = 8 hours; 1 hour = 60 minutes = 3,600 seconds.

What Does โ€œDays to Working Hoursโ€ Mean?

Days to Working Hours is a conversion metric that calculates the total number of standard working hours within a given number of days. This is typically based on the standard 8-hour workday, but can vary depending on the specific work schedule. This conversion is often used in project management, time tracking, and payroll calculations to accurately account for labor hours.

How to Calculate Days To Working Hours?

The following steps outline how to calculate the Days To Working Hours.


  1. First, determine the total number of days (D).
  2. Next, determine the number of working hours in a day (H).
  3. Next, gather the formula from above = WH = D * H.
  4. Finally, calculate the total number of working hours (WH).
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Total number of days (D) = 20

Number of working hours in a day (H) = 8