Time Duration Calculator

Calculate the duration between two times.

First Duration

Second Duration

Real-World Examples

Time Worked on a Project

Inputs (The Math)

  • Start Time8:45 AM
  • End Time2:15 PM

Outputs (The Result)

  • Total Duration5 hours, 30 minutes
  • Decimal Equivalent5.5 hours

Why it works this way

Because time operates on a base-60 scale, you cannot subtract 8.45 from 14.15. You must calculate the minutes up to the next hour (15 mins to 9:00 AM), count the hours (5 hours to 2:00 PM), and add the remaining minutes (15 mins).

Assumptions & Limitations:
  • No unpaid lunch breaks were taken.

Frequently Asked Questions

Can I calculate across multiple days?

Yes, just input the start and end dates along with the times.

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