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Calcimator

Night Cleaning Schedule Calculator

Task allocation across shift hours from building zones.

Inputs

%

Results

Total task hours

17.86

Recommended staff

3

Staff utilization74.4%
Surplus / deficit hours2.54
Sq ft per staff member8,333
Vacuuming time6
Restroom cleaning time2.67
Trash & dust mop time6.43
How to Use This Calculator
  1. Enter the total building area in square feet and the carpet coverage percentage.
  2. Input the number of restrooms and break rooms requiring cleaning.
  3. Set the shift length in hours and the number of cleaning staff on shift.
  4. Review the recommended staff count and utilization percentage.
  5. Use the surplus or deficit hours output to right-size your crew or adjust scope.

How the result changes with Total building area (sq ft)

Total building area (sq ft)Total task hoursRecommended staff
100,00060.159
350,000201.130
650,000370.2455
900,000511.276

What each input means

Total building area (sq ft)
Total cleanable square footage of the building.
Carpet coverage (%)
Percentage of floor area that is carpeted (remainder is hard floor).
Number of restrooms
Total restrooms to clean (average 20 min each).
Break rooms / kitchens
Break rooms or kitchenettes requiring detail cleaning.
Shift length (hours)
Duration of the night cleaning shift.
Cleaning staff on shift
Number of janitors/cleaners assigned to this shift.

What each result means

Total task hours
Combined hours needed for all cleaning tasks.
Recommended staff
Optimal number of staff at 85% productive time.
Staff utilization
Percentage of available shift hours consumed by tasks.
Surplus / deficit hours
Positive = spare capacity; negative = understaffed.
Sq ft per staff member
Area assigned per cleaner. Industry norm: 5,000-8,000 for office.
Vacuuming time
Hours allocated to carpet vacuuming.
Restroom cleaning time
Hours allocated to restroom servicing.
Trash & dust mop time
Hours for trash removal and hard floor dust mopping.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Total building area (sq ft) = 25000, Carpet coverage (%) = 60, Number of restrooms = 8, Break rooms / kitchens = 2 = 6 input(s) provided
  2. Calculate Total task hours
    Total task hours = trashHours + vacuumHours + dustMopHours +
    17.86 = 17.86
  3. Calculate Recommended staff
    Recommended staff = ceil(totalTaskHours / (shiftHours * productiveRatio))
    3 = 3
  4. Calculate Staff utilization
    74.4 = 74.4%
  5. Calculate Surplus / deficit hours
    Surplus / deficit hours = (availableHours * productiveRatio) - totalTaskHours
    2.54 = 2.54

Engine last updated . Checked against 3 independently-derived tests how we verify calculators.

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