Hours Calculator (Work Hours & Time Duration)
Calculate total hours worked, time duration between two times, or add up multiple time entries. Perfect for timesheets and payroll.
How to Use This Calculator
- Choose between Duration mode (single time range) or Timesheet mode (multiple entries).
- Enter the Start Time, End Time, and any unpaid Break minutes.
- In Timesheet mode, click Add Row to include additional work periods.
- Click Calculate to see total hours in HH:MM format, decimal hours, and total minutes.
Formula
Hours & Minutes = Total Minutes / 60 (quotient hours, remainder minutes)
Decimal Hours = Total Minutes / 60
Decimal hours convert minutes into a fractional hour value. For example, 8 hours 30 minutes = 8.5 decimal hours. This format is widely used in payroll systems and invoicing.
Examples
9:00 AM to 5:00 PM with 30-min break = 7h 30m (7.50 hours, 450 minutes).
Row 1: 8:00-12:00 (4h) + Row 2: 1:00-5:00 (4h) = 8h 0m total (8.00 hours).
5 days × 8.5 hours = 42.50 hours per week (2550 minutes total).
Timesheet Best Practices
Log your start, end, and break times at the end of each work period to avoid forgetting details.
Always subtract unpaid breaks. FLSA does not require employers to pay for bona fide meal breaks (typically 30+ minutes).
Most payroll systems use decimal hours. 7h 45m = 7.75 hours for accurate pay calculations.
Frequently Asked Questions
How do I convert hours and minutes to decimal?
Divide the minutes by 60 and add to the hours. For example: 7 hours 30 minutes → 30/60 = 0.5, so 7.5 decimal hours.
How do I calculate overtime?
In the US, the FLSA requires overtime pay for hours over 40 in a workweek, typically at 1.5× the regular rate. Calculate your total weekly hours and multiply hours above 40 by 1.5, then add your regular hours.
What is the standard work week?
A standard full-time work week in the US is 40 hours (5 days × 8 hours). Some countries use 35-45 hours depending on labor laws and employer policies.