Hours Calculator
Add & subtract time, track work hours
Starting Time
Time to Add
Result
0h 0m
= 0.00 decimal hours
Why Decimal Hours?
Many payroll and billing systems use decimal hours instead of hours:minutes format. Decimal hours make calculations easier: 8.5 hours × $20/hour = $170. Converting minutes to decimals: divide minutes by 60 (30 min ÷ 60 = 0.5 hours).
How to Use the Hours Calculator
Our free hours calculator helps you add and subtract time, track work hours, calculate time differences between clock times, and convert hours and minutes to decimal format for payroll and timesheets.
Calculator Modes
- Add/Subtract Time: Add or subtract hours and minutes to any time value
- Time Difference: Calculate hours and minutes between two clock times (e.g., 9:00 AM to 5:30 PM)
- Hours to Decimal: Convert hours and minutes to decimal hours (e.g., 2h 30m = 2.5 hours)
- Work Hours Tracker: Log multiple time entries and get total hours worked
Hours to Decimal Conversion
Many payroll systems require time in decimal format. To convert manually: divide minutes by 60 and add to hours. Our calculator does this instantly:
- 15 minutes = 0.25 hours
- 30 minutes = 0.5 hours
- 45 minutes = 0.75 hours
- 8 hours 45 minutes = 8.75 decimal hours
Common Use Cases
- Calculating total work hours for timesheets and payroll
- Tracking project time for billing clients
- Planning schedules and time management
- Converting time for international business across time zones
Tips for Accuracy
- Double-check AM/PM when entering clock times
- Remember that overnight shifts cross midnight
- For payroll, always round to your company's preferred increment (usually 15 minutes)
Related Time & Finance Calculators
Calculate dates between events with our date calculator. Need to calculate pay? Use our salary calculator to convert hourly to annual wages, or our paycheck calculator to estimate take-home pay.
Stay Updated
Get new calculators and tips delivered to your inbox.