Time to Decimal Hours Converter – Convert Time Formats
Convert between HH:MM:SS and decimal hours for payroll, invoicing, time tracking, and billing calculations.
Time Decimal Converter
Convert between time formats and decimal hours for accurate time tracking
lightbulbPopular Use Cases
Convert employee clock-in/out times to decimal hours for payroll processing
Calculate billable hours with 6-minute increment rounding for legal services
Convert decimal hours from spreadsheets back to time format (HH:MM)
Process an entire week's work hours for accurate time reporting
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inputTime or Decimal Hours
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› About this tool · FAQ
Convert between time formats (8:30) and decimal hours (8.5) with payroll calculations, timesheet processing, and billing features. Perfect for HR, payroll, legal billing, and time tracking.
How do I convert 8:30 to decimal hours?
8:30 means 8 hours and 30 minutes. Since 30 minutes = 0.5 hours (30÷60), the result is 8.5 decimal hours. Use this for payroll and billing systems.
What are legal billing increments and why use them?
Legal billing uses 6-minute increments (0.1 hour = 6 minutes). This means 1-6 minutes = 0.1 hours, 7-12 minutes = 0.2 hours, etc. This standardizes billing across the legal industry.
How do I calculate overtime pay with decimal hours?
For hours over 40/week: Regular pay = 40 × hourly rate. Overtime pay = (total hours - 40) × hourly rate × 1.5. Total = regular + overtime pay.
What decimal precision should I use for payroll?
Most payroll systems use 2 decimal places (8.50 hours). Some use 3 decimals for high precision. Legal billing typically uses 1 decimal (8.5 hours).
How do I handle break time in time calculations?
Subtract break time from total shift time. Example: 9:00 AM - 5:00 PM = 8 hours, minus 30-minute lunch = 7.5 working hours = 7.50 decimal hours.
Can I convert multiple time entries at once?
Yes, use batch mode to process multiple entries. Enter each time on a new line (8:30, 7:45, 8:15) and get totals plus individual conversions.
What's the difference between rounding modes?
Standard: normal rounding. Legal: 6-minute increments. Payroll: company-specific rules. Quarter: 15-minute blocks. Tenth: 6-minute blocks.
How do I handle AM/PM time formats?
Enter times as "8:30 AM" or "2:15 PM". The tool automatically converts to 24-hour format (08:30, 14:15) then to decimal hours.
Can I calculate pay for different hourly rates?
Yes, enter your hourly rate and the tool calculates total pay automatically. For multiple rates, process each rate category separately.
How accurate are the decimal conversions?
Conversions are mathematically precise. 1 minute = 0.016667 hours, but display rounds to your chosen precision (1-4 decimal places).