Question 1

How do you calculate total decimal work hours from clock times?

Accepted Answer

Convert the clock times to a 24-hour format (e.g. 1:30 PM is 13:30). Find the difference between the end time and start time. Subtract any unpaid lunch break. Convert the minutes to decimals by dividing by 60 (e.g. 8 hours and 15 minutes is 8 + 15/60 = 8.25 decimal hours).

Question 2

What is the difference between decimal hours and standard hours/minutes?

Accepted Answer

Standard time is expressed in minutes (base 60), while decimal time is expressed in tenths or hundredths of an hour (base 100). For payroll calculations, hourly rates must be multiplied by decimal hours. 8 hours 30 minutes must be written as 8.5 decimal hours, not 8.3.

Question 3

How do I calculate overtime on a daily timesheet?

Accepted Answer

Under standard labor models, work hours in excess of 8 hours per day or 40 hours per week qualify as overtime. Track your daily total decimal hours, subtract the regular 8-hour cap, and categorize the remainder as overtime hours.

Question 4

How are breaks handled in work hour calculations?

Accepted Answer

Under US labor guidelines, short rest breaks (5 to 20 minutes) must be counted as paid work hours. Longer meal periods (typically 30 minutes or more) are considered unpaid time off and should be subtracted from your total clock hours.

Question 5

What is a standard weekly work hour model?

Accepted Answer

A standard full-time workweek is 40 hours, typically divided into five 8-hour days. Standard part-time shifts generally average between 15 to 30 hours per week.

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Work Hours Calculator — Calculations & Slabs for FY 2026-27

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