Hours Calculator
Free online Hours Calculator.
Calculator
How to Use
- Enter the required values
- Click Calculate to see the result
- Review the detailed output
Formula
Hours = End Time - Start Time. If crossing midnight, add 24 hours. Decimal hours: whole = hours, decimal x 60 = minutes. Overtime = hours beyond 40/week.
Example Calculations
Work Day
Input: Clock in: 8:30 AM, Clock out: 5:15 PM, Lunch: 30 min
Result: 8.0 hours worked
Time Between
Input: Start: 2:45 PM, End: 10:30 PM
Result: 7 hours 45 minutes (7.75 decimal hours)
Overnight
Input: Start: 10:00 PM, End: 6:30 AM
Result: 8 hours 30 minutes
About This Calculator
Free online hours calculator. Calculate instantly in your browser with our easy-to-use tool. No sign-up required.
Our hours calculator is free, easy to use, and provides instant results. All calculations are performed in your browser for privacy and speed.
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Frequently Asked Questions
Hours between two times?
Subtract start from end. If crossing midnight, add 24 to end time first.
Work hours with lunch break?
Total time from clock-in to clock-out minus lunch. 8AM-5PM with 30min lunch = 8.5 hours.
Decimal hours to hours:minutes?
Whole number = hours. Decimal x 60 = minutes. 7.75 = 7hrs 45min.
Calculate overtime?
Hours beyond 40/week (US). Overtime pay = 1.5x regular rate.
Track hours across time zones?
Convert to single reference zone (UTC) before calculating. Many tools handle this automatically.