Deadline Calculator Formula

Understand the math behind the deadline calculator. Each variable explained with a worked example.

Formulas Used

Working Days Available

working_days = floor(work_days)

Required Hours Per Day

hours_per_day = total_task_hours / floor(work_days)

Weeks Remaining

weeks_remaining = total_days / 7

Variables

VariableDescriptionDefault
total_daysCalendar Days Until Deadline(days)30
weekend_days_per_weekNon-Working Days Per Week2
total_task_hoursTotal Task Hours Needed(hrs)40
work_daysDerived value= total_days * (7 - weekend_days_per_week) / 7calculated

How It Works

How to Plan for a Deadline

Convert calendar days to working days by removing weekends, then calculate the daily effort required.

Formula

Working Days = Calendar Days x (7 - Weekend Days) / 7

Hours Per Day = Total Task Hours / Working Days

Worked Example

30 calendar days to complete 40 hours of work, with 2 days off per week.

total_days = 30weekend_days_per_week = 2total_task_hours = 40
  1. 01Working days = 30 x (7-2)/7 = 30 x 5/7 = 21.4, floor = 21
  2. 02Hours per day = 40 / 21 = 1.9 hours/day
  3. 03Weeks remaining = 30 / 7 = 4.3 weeks

Ready to run the numbers?

Open Deadline Calculator