Time Duration Calculator

Calculate the duration between two times. Perfect for tracking work hours, meeting lengths, travel time, event durations, and any time interval. Automatically handles overnight durations that cross midnight.

How It Works

Enter start and end times in 24-hour format, and the calculator shows:

Formatted duration: Hours and minutes (e.g., "3 hours 30 minutes")
Total hours: Decimal hours for calculations
Total minutes: Total minutes for precise tracking

Common Use Cases

Work Time Tracking

Calculate hours worked:

Start: 09:00, End: 17:00 = 8 hours
Start: 08:30, End: 17:15 = 8 hours 45 minutes

Meeting Duration

Track meeting lengths:

Start: 14:00, End: 15:30 = 1 hour 30 minutes
Start: 10:15, End: 11:00 = 45 minutes

Travel Time

Calculate journey duration:

Start: 08:00, End: 12:30 = 4 hours 30 minutes
Start: 22:00, End: 06:00 (next day) = 8 hours

Overnight Durations

The calculator automatically handles durations that cross midnight:

22:00 to 02:00: 4 hours (overnight)
23:30 to 07:00: 7 hours 30 minutes (overnight)
00:00 to 08:00: 8 hours (same day)

If end time is earlier than start time, it's assumed to be the next day.

Time Format

24-Hour Format

Use 24-hour format (HH:MM):

09:00 = 9:00 AM
12:00 = 12:00 PM (noon)
17:00 = 5:00 PM
23:59 = 11:59 PM

Examples

Standard Work Day

Start: 09:00, End: 17:00

Duration: 8 hours

Half Day

Start: 09:00, End: 13:00

Duration: 4 hours

Overtime

Start: 09:00, End: 19:30

Duration: 10 hours 30 minutes

Short Meeting

Start: 14:15, End: 14:45

Duration: 30 minutes

Tips for Accurate Calculations

Use 24-hour format: Avoids AM/PM confusion
Include minutes: For precise tracking, include minutes
Check overnight: Verify overnight durations are correct
Round appropriately: For payroll, round to nearest quarter hour

Converting to Other Units

Use the results to convert to other time units:

To days: Divide hours by 24
To weeks: Divide days by 7
To seconds: Multiply minutes by 60

Work Time Calculations

Standard Work Day

8 hours = 480 minutes = 0.33 days

Full Time (Weekly)

40 hours/week = 8 hours/day × 5 days

Overtime

Hours over 8 per day or 40 per week (varies by location)

Time Tracking Tip: For work time tracking, use this calculator to determine hours worked, then use the minutes-to-hours converter for payroll calculations. Remember to account for breaks - subtract break time from total duration for accurate work hours!

Time Duration Calculator - Calculate Time Between Two Times