Time Duration Calculator

Calculate time differences, add or subtract time, and convert between time units with comprehensive duration analysis

Calculation Mode

Choose the type of time calculation

Time Input

Enter start and end date/times

Start Date & Time

End Date & Time

Calculate business days (exclude weekends)

Time Unit Reference

Common time unit conversions

Basic Conversions

• 1 minute = 60 seconds

• 1 hour = 60 minutes = 3,600 seconds

• 1 day = 24 hours = 1,440 minutes

• 1 week = 7 days = 168 hours

• 1 month ≈ 30.44 days (average)

• 1 year ≈ 365.25 days (including leap years)

Business Time

• Business week = 5 days (Mon-Fri)

• Business year ≈ 252 days

• Standard work day = 8 hours

• Lunch break typically 30-60 min

Calculator Tips

• Time can be omitted (defaults to 00:00)

• Supports 24-hour format

• Business days exclude Sat/Sun

• All calculations handle time zones as local

Common Use Cases

Duration Calculations

• Project timeline planning

• Age calculations

• Event countdown timers

• Work hour tracking

• Vacation day calculations

Time Arithmetic

• Meeting scheduling

• Deadline calculations

• Shift planning

• Travel time planning

• Appointment reminders

Unit Conversions

• Scientific calculations

• Data processing

• Performance metrics

• Rate calculations

• Time zone adjustments

Business Applications

• Payroll calculations

• Project billing

• SLA monitoring

• Resource planning

• Productivity tracking