Calculators

These calculators are a quick way for you to see how to improve productivity. Call your HP Representative for a direct comparison analysis.

  • expand Time to Square Foot per Hour Conversion Formula

    To calculate total square footage measurements per hour use the formula below.

    60 / ISSA Min. = __________ x # square feet = per hour

    First divide 60 (minutes) by the listed ISSA time per 1000 square feet. The total of this calculation multiplied by 1000 gives you the number of square feet per hour that may be accomplished by performing this task. Remember that many factors can affect this number in your particular facility.

    Example:
    Task #187 ‘Dust mop with a 24” Mop using Dust Treatment Chemical’ @ 7.2 minutes per 1000 square feet.

    Calculation:
    60 / 7.2 = 8.333 x 1000 = 8333 square feet per hour

  • expand Conversion Chart : Time in Worker Hours
    SecondsWorker Hours
    10.0003
    20.0005
    30.0008
    40.0011
    50.0014
    60.0017
    70.0019
    80.0022
    90.0025
    100.0028
    150.0042
    200.0055
    250.0069
    300.0083
    350.0097
    400.0111
    450.0125
    500.0138
    550.0153
    600.0167
    MinutesWorker Hours
    10.01670
    20.03330
    30.05000
    40.06670
    50.08333
    60.10000
    70.11670
    80.13330
    90.15000
    100.16670
    150.25000
    200.33330
    250.41670
    300.50000
    350.58330
    400.66670
    450.75000
    500.83333
    550.91670
    601.00000
    MinutesWorker Hours
    1 hr 5 min1.0833
    1 hr 10 min1.1667
    1 hr 15 min1.2500
    1 hr 20 min1.3333
    1 hr 25 min1.4167
    1 hr 30 min1.5000
    1 hr 35 min1.5833
    1 hr 40 min1.6667
    1 hr 45 min1.7500
    1 hr 50 min1.8333
    1 hr 55 min1.9167
    2 hr2.0000
    2 hr 5 min2.0833
    2 hr 10 min2.1667
    2 hr 15 min2.2500
    2 hr 20 min2.3333
    2 hr 25 min2.4167
    2 hr 30 min2.5000
    2 hr 35 min2.5833
    2 hr 40 min2.6667
  • expand Team Cleaning
    Time No.Team Cleaning TaskSize/QtyMinutes
    350Light Duty Specialist Office Building Cleaning1000 sq ft1006
    351Vacuum Specialist Office Building Cleaning1000 sq ft1006
    352Restroom Specialist Office Building CleaningEach Fixture 2
    353Light Duty Specialist School Cleaning w/o Sink in classroomEach Room 4.5
    354Light Duty Specialist School Cleaning with Sink in classroomEach Room 5.75
    355Vacuum Specialist School CleaningEach Room 7.5
    356Restroom Specialist School CleaningEach Fixture 3
    357Check-in and Travel to Area, beginning of shiftEach 2
    358Equipment Clean-Up and Restock, end of shiftEach 5
  • expand Direct Metric Conversion
    ApplicationSquare Meters per GallonSquare Meters per Liter
    Stripper Application9.302.46
    Wet Mop18.604.91
    Damp Mop37.209.85
    Auto Scrub with Gravity Feed Tank46.5012.2
    Auto Scrub with Solution Dosing69.7518.4
    Floor Seal Application139.5036.9
    Floor Finish Application186.0049.1
  • expand Cleaning Solution Coverage
    SolutionSq Ft per Gallon
    Stripping Solution100
    Wet Mop Solution200
    Damp Mop Solution400
    Auto Scrub with Gravity Feed Tank500
    Auto Scrub with Solution Dosing750
    Floor Seal (water based) application1500
    Floor Finish (water based) application2000
  • expand Weights and Measures
    100 pounds=45.35 kilograms
    40 pounds=18.14 kilograms
    15 pounds=6.79 kilograms
    1 pound (16 oz.)=0.45 kilograms
    1 ounce=28.35 grams
    55 gallons=208.18 liters
    30 gallons=113.55 liters
    5 gallons=18.93 liters
    1 gallon (128 fl. oz.)=3.79 liters
    1 gallon water=8.34 lbs.
    1 quart (32 fl. oz.)=0.95 liters
    1 pint (16 fl. oz.)=0.47 liters
    1 cup (8 fl. oz.)=0.24 liters
    1 fl. oz. (8 fl. drams)=29.57 milliliters
    1 fluid dram=3.70 milliliters
    1 kilogram=2.05 pounds
    1 gram=0.353 ounce
    1 milliliter=0.27 fl. dr. (0.034 fl. oz.)
    1 centiliter=0.34 fluid ounce
    1 deciliter=3.38 fluid ounces
    3 liters=.792 gallons
    1 liter=33.81 fluid ounces
    1 liter=1.057 quarts
    1 liter=.264 gallons
    1 cubic centimeter=0.061 cu. inch
    1 centimeter=0.39 inch
    1 meter=39.37 inches
  • expand pH Scale

    ph Scale

    The pH scale measures the amount of acidity or alkalinity in a chemical solution. Each number is ten times larger than the next number. Thus a pH of 1 is 10 times more acidic than a pH of 2; a pH of 2 is 100 times more acidic than a pH of 4. pH is derived from the Greek word for “Potency” and H is the symbol for hydrogen—thus, pH stands for the potency of the hydrogen ion in an aqueous solution.

    Note the following:

    1. Urine fluctuates from 5.5 to 8.0 depending on age, sex, food consumption, etc.
    2. Never mix cleaning chemicals, especially those found on opposite sides of the pH scale because adverse reactions or neutralization of the mixture may occur.
    3. All pH values are approximates.
    4. Solvents do not have a pH because they do not ionize in aqueous solution.
    5. pH does not measure the corrosiveness of an acid (i.e., HCL with a pH of 1 is stronger than Phosphoric with a pH of 1).