小时计算器

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.