Time Calculator
Add, subtract, multiply, and calculate average time values with precision
Time Calculation
Select operation and input time values
Time Operations Guide
Addition: Add multiple time values together
Subtraction: Find the difference between two times
Multiplication: Multiply time by a number
Average: Calculate the mean of multiple time values
Tip: Use quick-set buttons for common time values like work hours, break times, or standard intervals.
Common Use Cases
- Calculate total work hours per day/week
- Find elapsed time between events
- Determine break durations and schedules
- Calculate average meeting lengths
- Plan project timelines and deadlines
- Track time for billing or payroll
- Convert between time formats
- Add up exercise or activity durations
Time Calculation Rules
Input Rules:
- • Hours: 0-23 for time of day, unlimited for duration
- • Minutes: 0-59 (automatically converts to hours if over 59)
- • Seconds: 0-59 (automatically converts to minutes if over 59)
- • All values must be non-negative numbers
Result Formats:
- • Duration: Shows total time as HH:MM:SS
- • 12-Hour: Standard AM/PM format
- • 24-Hour: Military time format (00:00-23:59)
- • Decimal: Hours expressed as decimal number